3

- 5

3

Current

Internal Current

Internal 

rating (A)

resistance (Ω) 

rating (A)

resistance (Ω)

0.01

625

0.8

0.096

0.02

170

0.9

0.085

0.03

77

1

0.073

0.04

47

1.2

0.050

0.05

29.2

1.5

0.031

0.08

10.3

2

≤ 0.02

0.1

5.6

2.5

≤ 0.02

0.2

1.65

3

≤ 0.02

0.3

0.89

3.25

≤ 0.02

0.4

0.39

4

≤ 0.02

0.5

0.28

4.5

≤ 0.02

0.6

0.198

5

≤ 0.02

0.7

0.143

Description

Typical applications

Ordering information

Approvals

Technical data

Single pole miniaturised magnetic circuit breakers with unique high-
speed operating mechanism and push/pull on/off manual actuation.
Fitted with electrically separate excitation and switching circuits, and
one pair of auxiliary contacts which close when the main circuit is
open. Also suitable for impulse operation. Designed for printed circuit
board mounting. Low temperature sensitivity.

Printed circuit boards and components, safety and control systems.

808

Voltage rating                 

DC 24 V 

(higher voltages to special order)

UL: AC 120 V; DC 60 V  

Current ratings                  0.01...5 A 

(higher current ratings to special order)       

Max. continuous load

excitation circuit (2-3)

2.65 x I

N

Max. continuous load

switching circuit 6-7
auxiliary circuit 4-5    

5 A               

Typical life                         6,000 operations 

at 5 A for switching circuit 

Ambient temperature

-30...+70 °C  (-22...+158 °F)     

Insulation co-ordination 

rated impulse      

pollution

(IEC 60664-1) 

withstand voltage  

degree

1.5 kV             

2

Dielectric strength 
(UL 1077) 

test voltage

operating area

AC 1,240 V

excitation to 
switching circuit   

AC 1,240 V

excitation to 
auxiliary circuit   

AC 1,240 V

Insulation resistance      

> 100 MΩ (DC 500 V)

Interrupting capacity 
(o-o-o)

100 A

Interrupting capacity               
(UL 1077)

2,000 A  AC 120 V
1,000 A  DC 60 V

Degree of protection

operating area IP30

(IEC 60529/DIN 40050)       terminal area IP00

Vibration                            3 g (57-500 Hz), ± 0.23 mm (10-57 Hz),

to IEC 60068-2-6, test Fc
10 frequency cycles/axis

Shock                                25 g (11 ms)

to IEC 60068-2-27, test Ea

Corrosion                          48 hours at 5 % salt mist,

to IEC 60068-2-11, test Ka

Humidity                            240 hours at 95 % RH

to IEC 60068-2-78, test Cab

Mass                                 approx. 10 g

Authority      

Voltage ratings     

Current ratings

CSA

AC 120 V; DC 60 V

0.01...5 A 

UL   

DC 60 V

0.01...5 A

AC 120 V

0.01...5 A 

Standard current ratings and typical internal resistance values

Type No. 
808

fast-acting 

Manual release   
01

press-to-reset button, blue

B

manual release facility, blue (Standard)

Current ratings
0.01...5 A

808  -

B  - 5  A

ordering example

Magnetic Overcurrent Circuit Breaker 808-...

Issue B

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3

- 6

3

Dimensions

5 OFF

808-01

808-B

2.5 ON

15

5

5

14

0.5

10

15.5

ø4

30

20

ø9.3

0.6

.157

.366

.787

.098

1.18

.197

.197

.551

.020

.394

.610

.591

.024

7.5 OFF

15

5

5

14

0.5

10

15.5

0 ON

ø4

30

20

ø9.3

0.6

.157

.366

.787

.197

1.18

.197

.197

.551

.020

.394

.610

.591

.024

.295

4

3

2

6

5

7

-

+

2-3: excitation circuit
6-7:

s

witching circuit

4-5: auxiliary circuit

Typical time/current characteristics at +23 °C/+73.4 °F 

T

rip time in milli

s

econd

s

... time

s

 rated current

10000

1000

100

10

1

0.1

1

2

4

6 8 10

20

40

Internal connection diagram

All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications
without notice is reserved.Product markings may not be exactly as the ordering codes.
Errors and omissions excepted.

This is a metric design and millimeter dimensions take precedence ( mm )

inch

Magnetic Overcurrent Circuit Breaker 808-...

Issue B

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Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...

www.e-t-a.com

Issue B

3

- 7

3

Description

Typical application

Technical data

Single, two and three pole magnetic circuit breakers with trip-free
mechanism and push/pull on/off manual actuation. A choice of fast
magnetic only or hydraulically delayed switching characteristics (S- type
MO or HM CBE to EN 60934) ensures suitability for a wide range of
applications. Convenient threadneck panel or plug-in mounting, and with
a white push button indicator band showing clearly the tripped/off
position. Available with auxiliary contacts (1 x N/O, 1 x N/C) for status
signalling and fitted with an unprotected shunt tap terminal as standard. 
Approved to CBE standard EN 60934 (IEC 60934).

Control equipment, communications systems, power semiconductors.

8340-G2...

1-pole                         

2-pole

For further details please see chapter: Technical Information 

Voltage rating                 

3 AC 415 V; AC 240 V, 50/60 Hz; DC 80 V 

Current ratings            

0.02...50 A single pole (40+50 A DC only)
0.02...30 A multipole

Auxiliary circuit             

1 A, AC 240 V/DC 65 V  
0.5 A, DC 80 V

Typical life

3 AC 415 V, AC 240 V:

0.02...30 A

6,000 operations at 1 x I

N

, inductive 

10,000 operations at 1 x I

N

, resistive

DC 80 V:

0.02...25 A

6,000 operations at 1 x I

N

, inductive

0.02...30 A

10,000 operations at 1 x I

N

, resistive

40 + 50 A

5,000 operations at 1 x I

N

, resistive

Ambient temperature          -40...+85 °C  (-40...+185 °F)

Insulation co-ordination      rated impulse     

pollution 

(IEC 60664 and 60664A)

withstand voltage

degree

2.5 kV                 

2 

reinforced insulation in operating area 

Dielectric strength
(IEC 60664 and 60664A)

test voltage

operating area

AC 3,000 V

pole to pole (2 + 3-pole)

AC 1,500 V

main to auxiliary circuit    AC 1,500 V
aux. circuit 11-12/23-24

AC 1,000 V

switching to trip circuit (-X)  AC 1,500 V

Insulation resistance           > 100 MΩ (DC 500 V)

Interrupting capacity I

cn

1,200 A at AC;   2,000 A at DC

Interrupting capacity

I

N

0.02...20 A

25...30 A

(UL 1077) 

AC:

1-pole

AC 250 V/3,500A

AC 250 V/3,500A

2-pole

AC 250 V/3,500A   AC 250 V/5,000A

3-pole  3AC 250V/3,500A   3AC250V/5,000A

DC:

1-pole   0.02...50 A

DC 80 V/3,500 A

2-pole

0.02...30 A

DC 80 V/3500 A

Interrupting capacity
(UL  489A)

2,000 A

Degree of protection           operating area IP40
(IEC 60529/DIN 40050)      terminal area IP00

Vibration                           

with button down:

10 g (57-2000 Hz), ± 0.76 mm (10-57 Hz)
at 0.9 x I

N

other mounting planes:

10 g (57-2000 Hz) at I

N

to IEC 60068-2-6, test Fc
10 frequency cycles/axis

Shock                               100 g (11 ms) at 1 x I

N

, directions 1,2,3,4,5

100 g (11 ms) at 0.8 x I

N

, direction 6

to IEC 60068-2-27, test Ea

Corrosion                           96 hours at 5 % salt mist,

to IEC 60068-2-11, test Ka

Humidity                       

240 hours at 95 % RH
to IEC 60068-2-78, test Cab

Mass                                 approx. 70 g per pole

Current

Internal resistance (Ω) per pole

rating (A) 

curve      

curves 

curves 

-F4/F5

-E1/H1/R1

-E2/H2/R2

0.02

583

2441

2449

0.05

94

376

365

0.08

35.8

148

144

0.1

23

94

84

0.15

9.9

39

38

0.2

5

30.5

22.4

0.3

2.44

9.9

9.7

0.5

0.79

3.16

3.1

0.75

0.39

1.55

1.51

1

0.25

0.79

0.77

1.25

0.15

0.58                  0.56

1.5

0.10

0.37

0.36

1.75

0.083

0.30                  0.29

2

0.059

0.20

0.24

2.5

0.044

0.146

0.138

3

0.028

0.10

0.099

4

< 0.02

0.059

0.057

5

< 0.02

0.040

0.038

6

< 0.02

0.026

0.026

8

< 0.02

< 0.02

< 0.02

10

< 0.02

< 0.02

< 0.02

12

< 0.02

< 0.02

< 0.02

15

< 0.02

< 0.02

< 0.02

16

< 0.02

< 0.02

< 0.02 

20

< 0.02

< 0.02

< 0.02

25

< 0.02*

< 0.02

< 0.02

30

< 0.02*

< 0.02

< 0.02  

40

< 0.02

50

< 0.02

* 50 % ON duty / 60 min.

Standard current ratings and typical internal resistance values

Authority               Voltage ratings         

Current ratings

VDE (EN 60934)

3 AC 415 V; AC 240 V; DC 80 V

0.02...30 A

DC 80 V

0.02...50 A 1-pole

UL 1077, CSA

DC 80 V

0.02...50 A 1, 2-pole

3 AC 250 V; AC 250 V

0.02...30 A 

1,2,3-pole

UL 489 A

DC 80 V

0.05...30 A 1, 2-pole

CCC

3 AC 415 V; AC 240 V; DC 80 V

0.02...30 A

DC 80 V

0.02...50 A 1, 2-pole

Approvals         

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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Issue B

3

- 8

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...

3

Type No.
8340

Magnetic push/pull circuit breaker

Mounting 
G

threadneck panel mounting

Threadneck design
2

M12x1

Number of poles (main current paths)
0

single pole, switch only

1

single pole, protected

2

two pole, protected

3

three pole, protected

5

two pole, protected on one pole only

Panel hardware
0

without panel hardware

1

with hex nut M12x1 and washer 12/15

Terminal design
P1

blade terminals A6.3-0.8 mm (QC.250)

K3

screw terminals M4 recommended for I

N

> 20 A 

K4

screw terminals M5 recommended for I

N

> 40 A

R1

round connectors ø6

X1

blade terminals A6.3-0.8 mm (QC.250), 
separate switching and trip circuit

Characteristic curve
F4

instantaneous trip: magn. 1.5-2.2xI

N

DC (I

N

≤30 A) 

F5

magn.1.2-1.7xI

N

AC 50/60 Hz (I

N 

≤30 A)

E1

short delay: magn.-hydr.  1.01-1.4 I

N

, DC

E2

short delay: magn.-hydr. 1.01-1.4 I

N

,  AC 50/60 Hz

H1

medium delay: magn.-hydr. 1.01-1.4 I

N

, DC

H2

medium delay: magn.-hydr. 1.01-1.4 I

N

, AC  50/60 Hz

R1

long delay: magn.-hydr. 1.01-1.5 I

N

, DC

R2

long delay: magn.-hydr 1.01-1.5 I

N

, AC 50/60 Hz

Actuator colour
A

black with white trip indicator band

Actuator marking
0

without marking

4

rated current 
(legible with location pin above) standard

7

rated current
(legible with location pin below)

Auxiliary contacts
H0

without auxiliary contacts

H1

with auxiliary contacts

H2

with auxiliary contacts 
on pole 1 only (2 and 3-pole types)

H3

with auxiliary contacts  
on poles 1 and 3 (3-pole type)

Auxiliary contact function
1

one each N/O and N/C

2

1 pair N/O (23/24)

3

1 pair N/C (11/12)

Auxiliary contact terminal design
1

blade terminals A6.3-0.8 mm

Current ratings (optional)
0.02...50 A

Approval (optional)
U

UL 489 A

8340 - G

2

1

1 -  P1  F4 - A 4

H1 1  1  - 8 A - U

ordering example

Dimensions (1-pole)

Cut-out dimen

s

ion

s

:

current rating in A

location pin for 3mm (.118 in.)
hole dia.

0.8

2.7

ø8.4

1.5

.059

6.5

57.5

.256

2.26

ON

12.5

M12x1

tightening tor

q

ue max. 4 Nm

S

W14

5

19

50

18.2

.492

OFF

1.5

9.5

.551

.106

.031

.374

1.97

.748

.059

.717

blac

k

white

ø10.6

3

.417

.118

.331

1

11 23 2(i) 24 12 2(

k

)

panel thic

k

ne

ss

max. 3 mm (.118 in.)

9.5

±

0.2

±

.008

.374

ø12.5

+0

.2

.492

+.

0

08

*

 min. 25 for u

s

e with 

s

pla

s

h cover

ø3 

+0,2

.118 

+.008

19.4 

*

.764

Cut-out dimen

s

ion

s

:

2-pole

min. 40

min. 60

3-pole

unit 1

unit 3

unit 2

unit 1

38

57

unit 2

2-pole

3-pole

panel thic

k

ne

ss

max. 3 mm (.118 in.)

1.50

2.24

min. 1.57

min. 2.36

Ordering information

This is a metric design and millimeter dimensions take precedence ( mm )

inch

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3

- 9

3

Terminal design

4.6

6x6.8

45

10

Terminal de

s

ign -P1

1

11 23 2(i) 24 12 2(

k

)

55.2

Terminal de

s

ign -K3/-K4

1

11 23

24 12 2(

k

)

19.5

34

Terminal de

s

ign -R

23

24

22.5

2(i)

2(i)

1

11

12 2(

k

)

6

blade terminal A6.3-0.8
(

Q

C .250) to DIN 4624

2.17

terminal M4 or M5
tightening tor

q

ue

max.1.2 Nm

.394

.181

6x.268

1.77

1.34

.768

.886

.236

Installation drawings

25

5

2

5

3.5

29

8

Terminal de

s

ign -P

Terminal de

s

ign -K

Terminal de

s

ign -R

5

24

10

29

blow out outlet CBE

blow out area

1

11

23

2(i)

24

12

2(

k

)

1

11

23

2(i)

24

12

2(

k

)

operating area
(reinforced in

s

ulation)

mounting
area

terminal area

.138

1.14

.197

.197

.945

.394

1.14

.079

.315

.984

.197

Internal connection diagrams

8340-

G

211-X1F4-A4H121-…A

1 - 11

s

witching circuit

2(i) - 2(

k

)

magnetic trip circuit

23 - 24

auxiliary circuit (N/O)

8340-

G

211-X1F4-A4H131-…A

1 - 23

s

witching circuit

2(i) - 2(

k

)

magnetic trip circuit

11 - 12

auxiliary circuit (N/C)

I >

1

11

23

12

24

2(

k

)

line 1

11

23

2(

k

) load

line  1

11

23

12

24

2(

k

) load

I >

1

11

23

12

24

2(

k

)

unit 1

unit 2

unit 3

I >

I >

I >

line  1

11

23

12

24

2(

k

) load

I >

23

2(i)

24

2(

k

) load

I >

11

line  1

2(i)

12

2(

k

) load

11

line  1

23

1-pole, protected magnetically

multipole

1-pole, protected
hydraulic-magnetically

Circuit variant

s

 1-pole

12

24

This is a metric design and millimeter dimensions take precedence ( mm )

inch

Auxiliary contact terminal design

6.8

45

1 N/O, 1 N/C

1

11 23 2(i) 24 12 2(

k

)

1 N/C

1

11 23

24 12 2(

k

)

2(i)

19.5

34

1 N/O

23

24

22.5

1

11

12 2(

k

)

6

18.2

11.4

13.6

1.77

.268

.716

.768

.886

.535

1.34

.236

terminal M4 or M5
tightening tor

q

ue

max.1.2 Nm

blade terminal A6.3-0.8
(

Q

C .250) to DIN 46244

.449

Issue B

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Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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Issue B

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- 10

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...

3

Typical time/current characteristics 

T

rip time in 

s

econd

s

… time

s

 rated current

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

T

rip time in 

s

econd

s

… time

s

 rated current

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

T

rip time in 

s

econd

s

… time

s

 rated current

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

10000

1000

1

2

4

6

8

12

T

rip time in 

s

econd

s

… time

s

 rated current

100

10

1

0.1

0.01

0.001

3

0

5

7

9

10

11

10000

1000

1

2

4

6

8

12

T

rip time in 

s

econd

s

… time

s

 rated current

100

10

1

0.1

0.01

0.001

3

0

5

7

9

10

11

Medium delay curve

s

 H1 for DC and H2 for AC 50/60 Hz,

hydraulic-magnetic

Curve F4 for DC, magnetic (undelayed)

(I

N

 >20 A, 50

%

 ON period, 60 min.) at +23 

°

C / +73.4 

°

F

Curve F5 for AC 50/60 Hz, magnetic (undelayed)

(I

N

 >20 A, 50

%

 ON period, 60 min.) at +23 

°

C / +73.4 

°

F

S

hort delay curve

s

 E1 for DC and E2 for AC 50/60 Hz,

hydraulic-magnetic

Long delay curve

s

 R1 for DC and R2 for AC 50/60 Hz,

hydraulic-magnetic

Other curve

s

 upon reque

s

t ( e. g. impul

s

e delay).

N.B.

Curve

s

 E1, E2, H1, H2, R1 and R2 will only be maintained if

the e

s

cutcheon i

s

 mounted on a vertical 

s

urface.

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3

- 11

3

Accessories

Bu

s

 bar (10-way)

 (

s

upplied a

s

 a complete pac

k

age)

for type 18 

s

oc

k

et

(for max. 100 A continuou

s

 load),

more po

s

ition

s

 available on re

q

ue

s

t

X 211 158 01 with terminal
X 211 158 02 without terminal

blade terminal A6.3-0.8 (

Q

C .250)

to DIN 46244 polarized to en

s

ure

correct connection

retaining clip
(acce

ss

ory)

top-hat rail
EN 50022-35x7.5

polarization rece

ss

G profile
EN 50035-G32

adapter X 200 409 01

10 mm
.394 in.
depth

4

25.8

33.3

80

6.5

10

1.4

5

19

45.8

1.80

.197

.394

.055

1.31

3.15

.256

1.02

.157

.748

S

oc

k

et

Polarized 

s

oc

k

et with

18-P10-

S

i

adapter

(for rating

s

 >16 A plea

s

e contact E-T-A)

18-P10-

S

i-20025

Phoenix terminal A

K

G 35

cro

ss

 

s

ection max 35 mm

2 

(AWG 2)

cylinder-head 

s

crew

M4x4 I

S

O 1207 nic

k

el-plated

wa

s

her

A4.3 DIN 125
nic

k

el plated

copper rail
tin-plated

female connector

2

M4

223

10

7

19

fu

s

ible lin

k

(con

s

triction 1 mm/.039 in. thic

k

)

.079

.276

.748

8.78

.394

In

s

ulated 

s

leeving for bu

s

 bar

s

Y 303 824 11

9

5.4

190

.394

.213

.354

7.48

3.5

10

.138

Retaining clip for 

s

oc

k

et 18-P10-

S

i

Y 300 579 11

35

ø1

8

mounting dimen

s

ion

s

55.5

60

15

52

2.05

2.19

.591

2.36

.039

.315

1.38

Connector bu

s

 lin

k

 -P10

X 210 588 01/

1.5 mm

2

 (AWG 16), brown (up to 13 A max. load)

X 210 588 02/

2.5 mm

2

 (AWG 14), blac

k

 (up to 20 A max. load)

X 210 588 03/

2.5 mm

2

 (AWG 14), red (up to 20 A max. load)

X 210 588 04/

2.5 mm

2

 (AWG 14), blue (up to 20 A max. load)

~70

100 

q

uic

k

-connect tab

s

 6.3 (.250)

DIN 46247 tinned bra

ss

,

in

s

ulated

~2.76

S

pla

s

h cover with he

x

 nut and O ring 

(IP66 and IP67)

X 200 801 08

(nic

k

el plated hex nut M12x1,

s

pla

s

h cover tran

s

parent)

X 200 801 03

(blac

k

 fini

s

h hex nut M12x1,

s

pla

s

h cover blac

k

)

He

x

 nut

Y 300 116 02

S

pring wa

s

her

Y 300 118 03

1.2

±

0.5

ø12

+0.2

ø15

thic

k

ne

ss

0.4 mm
.016 in.

M12x1

2.5

Acce

ss

orie

s

 for pu

s

h button

M12x1

S

pla

s

h 

s

eal, blac

k

, he

x

 nut and O ring

 (IP54)

X 200 802 01

(nic

k

el plated hex nut M12x1,

s

pla

s

h 

s

eal blac

k

)

Actuator e

x

ten

s

ion

X 200 803 01

 (blac

k

 button)

S

W14

.551

.098

.047

±

.020

.472

+.008

.591

S

W 17

S

W 17

This is a metric design and millimeter dimensions take precedence ( mm )

inch

All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications
without notice is reserved.Product markings may not be exactly as the ordering codes.
Errors and omissions excepted.

Shock directions / Mounting attitudes

5

6

4

3

1

2

23

24

2(i)

1

11

12

2(

k

)

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...

Issue B

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3

- 13

3

Description

Typical application

Technical data

Single and two pole magnetic circuit breakers with trip-free mechanism
and push/pull on/off manual actuation. A choice of fast magnetic only
or hydraulically delayed switching characteristics (S-type MO or HM
CBE to EN 60934) ensures suitability for a wide range of applications.
Convenient threadneck panel or plug-in mounting, and with a white
push button indicator band showing clearly the tripped/off position.
Available with auxiliary contacts (1 x N/O, 1 x N/C) for status signalling
and fitted with an unprotected shunt tap terminal as standard. 
Reliable tripping with even the smallest overcurrents.
Approved to CBE standard EN 60934 (IEC 60934).

Railway vehicles, telecommunications, process control.

8340-G2... 110 V DC

1-pole                                         2-pole 

For further details please see chapter: Technical Information 

Voltage rating                 

DC 110 V ± 25 %

Current ratings         

0.02...50 A single pole 
0.02...30 A 2-pole

Auxiliary circuit              

AC 240 V/DC 65 V 1 A
DC 110 V ± 25 % 0,3 A

Typical life                      

DC 110 V:

0.02...35 A 10,000 operations at 1 x I

N

40 + 50 A  3,000 operations at 1 x I

N

0.02...30 A 5,000 operations at 2 x I

N

Ambient temperature          -40...+85 °C  (-40...+185 °F)

Insulation co-ordination    rated impulse     

pollution 

(IEC 60664 and 60664A)

withstand voltage

degree

2.5 kV                 

2 

reinforced insulation in operating area 

Dielectric strength
(IEC 60664 and 60664A)

test voltage

operating area

AC 3,000 V

pole to pole (2-pole)        AC 1,500 V
main to auxiliary circuit  AC 1,500 V
aux. circuit 11-12/23-24 AC 1,000 V
switching to 
trip circuit (-X)    

AC 1,500 V

Insulation resistance           > 100 MΩ (DC 500 V)

Interrupting capacity I

cn

1,000 A 

Degree of protection           operating area IP40
(IEC 60529/DIN 40050)       terminal area IP00

Vibration                           

with button down:

10 g (57-2000 Hz), ± 0.76 mm (10-57 Hz)

at 0.9 x I

N

other mounting planes:

10 g (57-2000 Hz) at I

N

to IEC 60068-2-6, test Fc
10 frequency cycles/axis

Shock                               100 g (11 ms) at 1 x I

N

, directions 1,2,3,4,5

100 g (11 ms) at 0.8 x I

N

, direction 6

to IEC 60068-2-27, test Ea

Corrosion                           96 hours at 5 % salt mist,

to IEC 60068-2-11, test Ka

Humidity                            240 hours at 95 % RH

to IEC 60068-2-78, test Cab

Mass                                 approx. 70 g per pole

Current

Internal resistance (Ω) per pole

rating (A) 

curve -F4

curves -E1/H1/R1

0.02

583

2441

0.05

94

376

0.08

34

148

0.1

23

94

0.15

25.1

39

0.2

14.6

30.5    

0.3

6.32

9.9

0.5

0.79

3.16

0.75

0.39

1.55

1

0.25

0.79

1.5

0.27

0.37

2

0.059

0.20

2.5

0.044

0.146

3

0.028

0.10

4

0.04

0.059

5

< 0.02

0.040

6

< 0.02

0.026

8

< 0.02

< 0.02

10

< 0.02

< 0.02

12

< 0.02

< 0.02

15

< 0.02

< 0.02

16

< 0.02

< 0.02

20

< 0.02

< 0.02

25

< 0.02*

< 0.02

30

< 0.02*

< 0.02

40

< 0.02

50

< 0.02

* 50 % ON duty / 60 min.

Standard current ratings and typical internal resistance values

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...110 V

Issue B

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Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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Issue B

3

- 14

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...110 V

3

Dimensions (1-pole)

mounting hole

.748

current rating in A

location pin for 3mm (.118 in.)
hole dia.

0.8

2.7

S

W14

5

19

50

9.5

.551

.106

.031

.374

1.97

18.2

16.7

12.5

ON

tightening tor

q

ue max. 4 Nm

2-pole

14.8

1.5

3

M12x1

ø8.4

ø10.6

3

1

11 23 2(i) 24 12 2(

k

)

blac

k

white

.417

.118

.331

.059

6.5

57.5

.256

2.26

.492

OFF

1.5

.059

.717

.118

.583

.657

ø3

+0.2

+.008

.118

panel thic

k

ne

ss

max. 3 mm (.118 in.)

9.5

±

0.2

±

.008

.374

19.4 

*

ø12.5

+0.2

.492

+.008

.764

*

 min. 25 for u

s

e with 

s

pla

s

h cover

38

unit 1

unit 2

panel thic

k

ne

ss

1.5 - 3 mm (.059-.118 in.)

Cut-out dimen

s

ion

s

:

min. 40

2-pole

1.50

min.1.57

Ordering information

Type No.
8340

Magnetic push/pull circuit breaker

Mounting 
G

threadneck panel mounting

Threadneck design
2

M12x1

Number of poles (main current paths)
1

single pole, protected

2

two pole, protected

5

two pole, protected on one pole only

Panel hardware
0

without panel hardware

1

with hex nut M12x1 and washer 12/15

Terminal design
P1

blade terminals A6.3-0.8 mm (QC.250)

K3

screw terminals M4 recommended for I

N

> 20 A 

K4

screw terminals M5 recommended for I

N

> 40 A

R1

round connectors ø6

X1

blade terminals A6.3-0.8 mm (QC.250),  
separate switching and trip circuit

Characteristic curve
F4

instantaneous trip: magn. 1.5-2.2 x I

N

E1

short delay: magn.-hydr. 1.01-1.4 x I

N

H1

medium delay: magn.-hydr.1.01-1.4 x I

N

R1

long delay: magn.-hydr. 1.01-1.5 x I

N

Actuator colour
A

black with white trip indicator band

Actuator marking
4

rated current
(legible with location pin above) standard

7

rated current 
(legible with location pin below)

Auxiliary contacts
H0

without auxiliary contacts

H1

with auxiliary contacts

H2

with auxiliary contacts
on pole 1 only (2- and 3-pole types) 

Auxiliary contact function
1

one each N/O and N/C

2

1 pair N/O (23/24)

3

1 pair N/C (11/12)

Auxiliary contact terminal design
1

blade terminals A6.3-0.8 mm

Voltage rating
D

DC 110 V

E

DC 110 V + higher 
flammability rating

Current ratings
0.02...50 A

8340 - G

2

1

1 -  P1  H1 - A 4 H1 1 1 D  -  8 A

ordering example

This is a metric design and millimeter dimensions take precedence ( mm )

inch

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 15

3

Installation drawings

25

mounting
area

operating area
(reinforced in

s

ulation)

terminal area

5

2

5

3.5

29

8

Terminal de

s

ign -P

Terminal de

s

ign -K

Terminal de

s

ign -R

5

24

10

29

.315

.079

1.14

.138

.197

1.14

.394

.197

.945

.984

.197

Internal connection diagrams

LINE  (

+

) 1

LINE  (

+

) 1

LINE  (

+

) 1

LINE  (

+

) 1

(–)

I >

11

23

12

24

2(

k

)

11

23

2(

k

)

11

23

12

24

2(

k

)

I >

unit 1

unit 2

I >

I >

11

23

12

24

2(

k

)

1-pole, protected magnetically

2-pole

1-pole, protected
hydraulic-magnetically

(–)

(–)

(–)

LOAD

LOAD

LOAD

LOAD

12

24

This is a metric design and millimeter dimensions take precedence ( mm )

inch

Terminal design

4.6

6x6.8

45

10

Terminal de

s

ign -P1

1

11 23 2(i) 24 12 2(

k

)

55.2

Terminal de

s

ign -K3/-K4

1

11 23

24 12 2(

k

)

19.5

34

Terminal de

s

ign -R

23

24

22.5

2(i)

2(i)

1

11

12 2(

k

)

6

blade terminal A6.3-0.8
(

Q

C .250) to DIN 4624

2.17

terminal M4 or M5
tightening tor

q

ue

max.1.2 Nm

.394

.181

6x.268

1.77

1.34

.768

.886

.236

Auxiliary contact terminal design

6.8

45

1 N/O, 1 N/C

1

11 23 2(i) 24 12 2(

k

)

1 N/C

1

11 23

24 12 2(

k

)

2(i)

19.5

34

1 N/O

23

24

22.5

1

11

12 2(

k

)

6

18.2

11.4

13.6

1.77

.268

.716

.768

.886

.535

1.34

.236

terminal M4 or M5
tightening tor

q

ue

max.1.2 Nm

blade terminal A6.3-0.8
(

Q

C .250) to DIN 46244

.449

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...110 V

Issue B

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Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 16

3

Typical time/current characteristics 

… time

s

 rated current

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

… time

s

 rated current

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

T

rip time in 

s

econd

s

… time

s

 rated current

T

rip time in 

s

econd

s

… time

s

 rated current

Long delay curve R1, hydraulic-magnetic

Medium delay curve H1, hydraulic-magnetic

S

hort delay curve E1, hydraulic-magnetic

Curve F4, magnetic (undelayed)

at +23 

°

C / +73.4 

°

F

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

10000

1000

1

2

4

6

8

12

100

10

1

0.1

0.01

0.001

3

0

5

7

9

10

11

N.B.  

Curves E1, H1 and R1 will only be maintained if the escutcheon is mounted on a vertical surface.

Other curves upon request (e.g. impulse delay).

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...110 V

Issue B

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Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 17

3

Accessories

Bu

s

 bar (10-way)

 (

s

upplied a

s

 a complete pac

k

age)

for type 18 

s

oc

k

et

(for max. 100 A continuou

s

 load),

more po

s

ition

s

 available on re

q

ue

s

t

X 211 158 01 with terminal
X 211 158 02 without terminal

blade terminal A6.3-0.8 (

Q

C .250)

to DIN 46244 polarized to en

s

ure

correct connection

retaining clip
(acce

ss

ory)

top-hat rail
EN 50022-35x7.5

polarization rece

ss

G profile
EN 50035-G32

adapter X 200 409 01

10 mm
.394 in.
depth

4

25.8

33.3

80

6.5

10

1.4

5

19

45.8

1.80

.197

.394

.055

1.31

3.15

.256

1.02

.157

.748

S

oc

k

et

Polarized 

s

oc

k

et with

18-P10-

S

i

adapter

(for rating

s

 >16 A plea

s

e contact E-T-A)

18-P10-

S

i-20025

Phoenix terminal A

K

G 35

cro

ss

 

s

ection max 35 mm

2 

(AWG 2)

cylinder-head 

s

crew

M4x4 I

S

O 1207 nic

k

el-plated

wa

s

her

A4.3 DIN 125
nic

k

el plated

copper rail
tin-plated

female connector

2

M4

223

10

7

19

fu

s

ible lin

k

(con

s

triction 1 mm/.039 in. thic

k

)

.079

.276

.748

8.78

.394

In

s

ulated 

s

leeving for bu

s

 bar

s

Y 303 824 11

9

5.4

190

.394

.213

.354

7.48

3.5

10

.138

Retaining clip for 

s

oc

k

et 18-P10-

S

i

Y 300 579 11

35

ø1

8

mounting dimen

s

ion

s

55.5

60

15

52

2.05

2.19

.591

2.36

.039

.315

1.38

Connector bu

s

 lin

k

 -P10

X 210 588 01/

1.5 mm

2

 (AWG 16), brown (up to 13 A max. load)

X 210 588 02/

2.5 mm

2

 (AWG 14), blac

k

 (up to 20 A max. load)

X 210 588 03/

2.5 mm

2

 (AWG 14), red (up to 20 A max. load)

X 210 588 04/

2.5 mm

2

 (AWG 14), blue (up to 20 A max. load)

~70

100 

q

uic

k

-connect tab

s

 6.3 (.250)

DIN 46247 tinned bra

ss

,

in

s

ulated

~2.76

S

pla

s

h cover with he

x

 nut and O ring

 (IP66 and IP67)

X 200 801 08

(nic

k

el plated hex nut M12x1,

s

pla

s

h cover tran

s

parent)

X 200 801 03

(blac

k

 fini

s

h hex nut M12x1,

s

pla

s

h cover blac

k

)

He

x

 nut

Y 300 116 02

S

pring wa

s

her

Y 300 118 03

1.2

±

0.5

ø12

+0.2

ø15

thic

k

ne

ss

0.4 mm
.016 in.

M12x1

2.5

Acce

ss

orie

s

 for pu

s

h button

M12x1

S

pla

s

h 

s

eal, blac

k

, he

x

 nut and O ring

 (IP54)

X 200 802 01

(nic

k

el plated hex nut M12x1,

s

pla

s

h 

s

eal blac

k

)

Actuator e

x

ten

s

ion

X 200 803 01

 (blac

k

 button)

S

W14

.551

.098

.047

±

.020

.472

+.008

.591

S

W 17

S

W 17

Shock directions / Mounting attitudes

5

6

4

3

1

2

All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications
without notice is reserved.Product markings may not be exactly as the ordering codes.
Errors and omissions excepted.

This is a metric design and millimeter dimensions take precedence ( mm )

inch

Issue B

www.e-t-a.com

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-G2...110 V

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 19

3

Description

Typical applications

Technical data

Single and multipole magnetic circuit breakers with trip-free mechanism
and toggle actuation. A choice of fast magnetic only or hydraulically
delayed switching characteristics (S-type MO or HM CBE to EN 60934)
ensures suitability for a wide range of applications. Industry standard
dimensions and panel mounting. Options include auxiliary changeover
contacts, or relay trip function. Low temperature sensitivity at rated load.
Approved to CBE standard EN 60934 (IEC 60934).

Control equipment, communications systems, transportation, power
supplies.

8340-F...

1-pole

2-pole

For further details please see chapter: Technical Information 

Voltage rating

3 AC 415 V; AC 240 V, 50/60 Hz; DC 80 V
(higher DC ratings to special order)

Current ratings         

0.02...50 A  1-pole (40 + 50 A DC only)
0.02...30 A  multipole

Auxiliary circuit                   6 A, AC 240 V

3 A, DC 28 V 
1 A, DC 65 V
0.5 A, DC 80 V

Typical life                        

3 AC 415 V, AC 240 V:

0.02...30 A

6,000 operations at 1 x I

N

, inductive 

10,000 operations at 1 x I

N

, resistive

DC 80 V:

0.02...25 A

6,000 operations at 1 x I

N

, inductive

0.02...30 A

10,000 operations at 1 x I

N

, resistive

40 + 50 A

6,000 operations at 1 x I

N

, resistive

Ambient temperature          -40...+85 °C  (-40...+185 °F)

Insulation co-ordination      rated impulse      

pollution

(IEC 60664 and 60664A)     withstand voltage  

degree

2.5 kV                 

2

reinforced insulation in operating area

Dielectric strength 
(IEC 60664 and 60664A)   test voltage

operating area                AC 3,000 V 
pole to pole

(2- and 3-pole)

AC 1,500 V

main to auxiliary circuit    AC 3,000 V
switching to trip circuit    AC 1,500 V (version -X)

Insulation resistance           > 100 MΩ (DC 500 V)

Interrupting capacity I

cn 

1,200 A at AC   –   2,000 A at DC

Interrupting capacity

I

N

0.02...20 A

25...30 A

(UL 1077) 

AC:

1-pole

AC 250 V/3,500A

AC 250 V/3,500A

2-pole    AC 250 V/3,500A   AC 250 V/5,000A
3-pole    3AC 250V/3,500A   3AC250V/5,000A

DC:

1-pole   0.02...50 A

DC 80 V/3,500 A

2-pole

0.02...30 A

DC 80 V/3500 A

Interrupting capacity
(UL 489A)

2,000 A

Degree of protection           operating area IP40
(IEC 60529/DIN 40050)       terminal area IP00

Vibration                           

with toggle down: 

10 g (57-2000Hz) ± 0.76 mm (10-57 Hz) 
at 0.9 x I

N

directions 1, 2, 3, 4, 5:

10 g (57-2000 Hz) at 1 x I

N

.

with curves F1, F2 in all planes:

10 g (57-2000 Hz) ± 0.76 mm (10-57 Hz) 
at 0.8 x I

N

, 

to IEC 60068-2-6, test Fc
10 frequency cycles/axis

Shock                               100 g (11 ms) at 1 x I

N

, directions 1,2,3,4,5

100 g (11 ms) at 0.8 x I

N

, direction 6.

with curves F1, F2: 

100 g (11 ms) at 0.8 x I

N

to IEC 60068-2-27, test Ea

Current

Curves and internal resistance per pole (Ω) 

rating (A)

F1 

F2            K1, M1, T1,   K2, M2, T2

0.02

1493

953

2669

2457

0.05

276            

152

452

376

0.1

58

37

100

94

0.25

8.2

6.0

15.5

14.7

0.5

2.3

1.47

3.9

3.2

0.75

0.98

0.63

1.65

1.56

1

0.58

0.35

0.95 0.90

2

0.145

0.096 0.26

0.20

2.5

0.096

0.061

0.15

0.15

3

0.065

0.048

0.10

0.10

5

0.025

< 0.02    

0.042

0.040

6

< 0.02

< 0.02

0.029

0.028

8

< 0.02

< 0.02

< 0.02

< 0.02

10

< 0.02

< 0.02

< 0.02

< 0.02

12

< 0.02

< 0.02

< 0.02

< 0.02

15

< 0.02

< 0.02

< 0.02

< 0.02

16

< 0.02

< 0.02

< 0.02

< 0.02

20

< 0.02

< 0.02

< 0.02

< 0.02

25

< 0.02

< 0.02

< 0.02

< 0.02

30

< 0.02

< 0.02

< 0.02

< 0.02

40

≤ 0.01

-

≤ 0.01

-

50

≤ 0.01

-

≤ 0.01

-

Standard current ratings and typical internal resistance values

Corrosion                       

96 hours at 5 % salt mist 
to IEC 60068-2-11, test Ka

Humidity                        

240 hours at 95 % RH 
to IEC 60068-2-78, test Cab

Mass                                approx. 65 g per pole

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-F...

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Issue B

3

- 20

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-F...

3

Type No.
8340

magnetic circuit breaker with toggle actuator

Mounting 
F

flange mounting

Configuration
1

with mounting nuts 6-32 UNC

4

with mounting nuts M3

9

snap-in frame

Number of poles
0

single pole, switch only

1

single pole protected

2

two pole protected

3

three pole protected

4

four pole protected

5

two pole, protected on one pole only

6

four pole, protected on poles 1, 2 and 3 only

7

two pole, switch only

Panel hardware
0

without panel hardware

Terminal design (main contact)
K3

screw terminals with metric thread, M4
(recommended for I

N

≥ 20 A)

K4

screw terminals with metric thread, M5 (I

N

= 40 A)

P1

blade terminals 

X1

blade terminals with separate switching 
and relay circuit  

Characteristic curves

Characteristic curve F, instantaneous trip:

F1

DC

trip at 1.01-1.5 x I

N

F2

AC 60/50Hz

trip at 1.01-1.5 x I

N

haracteristic curve K, short delay:

K1

DC

trip time at 2 x I

N

: 0.16-1.2 s

K2

AC 60/50Hz

trip time at 2 x I

N

: 0.13-1.6 s

Characteristic curve M, medium delay:

M1

DC

trip time at 2 x I

N

: 0.6-7.5 s

M2

AC 60/50Hz 

trip time at 2 x I

N

: 2.2-20 s

Without characteristic curve:

Q0

switch only

Characteristic curve T, long delay:

T1

DC

trip time at 2 x I

N

: 10-70 s

T2

AC 60/50Hz

trip time at 2 x I

N

: 15-150 s

Relay trip X:

X1

voltage trip at DC, instantaneous trip

X2

voltage trip at AC,  instantaneous trip

Other curves to special order

(e.g. pulse delayed, 

high inrush currents, capacitive loads)

Actuator 

colour / design

A

black, long toggle

B

white, long toggle

C

blue, long toggle

K

black, short toggle

L

white, short toggle

M

blue, short toggle

Z

black, without toggle, with slot

other colours to special order

Marking on actuator
0

without marking

L

I-O; ON-OFF

N

I-O; ON-OFF (I

N

on housing top) 

Auxiliary contacts
H0

without auxiliary contacts

H1

with auxiliary contacts, gold-flushed

H2

auxiliary contacts, gold-flushed
on one pole only (multipole)

H3

auxiliary contacts, gold-flushed
on poles 1 and 3 (3 and 4-pole) 

Auxiliary contact function
4

1 change over contact

Auxiliary contact 
terminal design
2

blade terminal 2.8-0.5 mm

Current ratings

0.02...50 A

8340 - F

1

1

0 - P1 M1 -  A   L   H1   4   2 -  30 A 

Ordering information

magnetic,
hydraulic-magnetic

}

Internal connection diagrams

unit 2

unit 1

line  1

11(C)

11(C)

14(NO)

12(NC)

2

14(NO)

12(NC)

2 load

1

I >

I >

unit 3

. . .

unit 4

. . .

line  1

line 1

line 1

line 1

11(C)

14(NO)

12(NC)

2 load

2 load

4

2 load

I >

I >

I >

3

11(C)

14(NO)

12(NC)

2 load

I >

1-pole protected
magnetically

with 

s

eparate 

s

witching

and relay circuit

1-pole protected
hydraulic-magnetic

multipole

Authority     

Voltage ratings     

Current ratings

VDE (EN 60934)

3 AC 415 V; AC 240 V; DC 80 V

0.02...30 A  

1 to 6-pole

DC 80 V

0.02...50 A  1-pole

UL 1077, CSA

DC 80 V

0.02...50 A  

1 to 6-pole

3 AC 250 V; AC 250 V

0.02...30 A  

1 to 6-pole

UL 489 A

DC 80 V

0.05...30 A  1, 2-pole

QPL (Sweden)

AC 240 V; DC 50 V

1...30 A

CCC

3 AC 415 V; AC 240 V

0.02...30 A  

DC 80 V

0.02...50 A  1, 2-pole

Approvals

8340 - F 1 1 0 - P1  M1 - A L  H1 4 2  -  30 A

Voltage rating

only curves X1, X2
DC 5, 8, 12, 24  V
AC 110, 220, 240 V

Options
H

higher flammability 
rating
Approvals 
upon request

Approval (optional)
U 

UL 489 A

8340 - F 1 1 0 - P1  M1 - A L  H1 4 2  -  30 A - ... - ...  -  U    

ordering example

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3

- 21

3

Dimensions

Flange mounting
Configuration: F1/F4

Actuator: long toggle

Actuator: 

s

hort toggle

Actuator: without toggle, with 

s

lot

5.5

3.3

OFF

ON

30 

°

30 

°

17.5

41.2

50.8

19

1

4

3

2

Ø15

42.2

26.7

4.3

number of pole

s

: 1-4

Cut-out dimen

s

ion

s

max. panel thic

k

ne

ss

: 3 mm

1

4

3

2

30 

°

30 

°

8.6

OFF

ON

3.3

5.5

1

4

3

2

30 

°

OFF

ON

30 

°

3.3

5.3

19

pole:

1

2

3

4

19.05

±

0.12

38.1

±

0.12

57.15

±

Ø16

±

0,12

26.7

±

0.1

42.2

±

0.1

Applicable for nominal dimen

s

ion

s

 without direct tolerance indication:

DIN I

S

O 286 

±

 IT13

mounting thread M3
or 6-32 UNC-2B
mounting depth
max. 4.5 mm/.177 in.
tightening tor

q

ue max. 0.33 Nm

.689

1.62

.130

.217

.748

2.00

.591

1.05

1.66

.169

.339

.217

.130

.130

.208

.748

.630

±

.004

3.5

±

0.1

 (M3)

4

+0.1
-0.15

(6-32UNC)

.138

±

.004

 (M3)

.157

+.004
-.006

(6-32UNC)

1.66

±

.004

1.05

±

.004

0.12

.750

.005

±

1.50

±

.005

2.25

±

.005

This is a metric design and millimeter dimensions take precedence ( mm )

inch

number of pole

s

: 1-4

pole

1

2

3

4

Cut-out dimen

s

ion

s

max. panel thic

k

ne

ss

:  2 

±

 0,5 mm

Configuration: F9

Actuator: long toggle

Actuator: 

s

hort toggle

Actuator: without toggle, with 

s

lot

14.4

30 

°

30 

°

41.2

ON

OFF

50.8

1

4

3

2

3

66

19

27.4

ON

OFF

5.6

30 

°

30 

°

ON

OFF

30 

°

30 

°

76.8

±

0.2

57.6

±

0.2

38.4

±

0.2

19.2

±

0.2

55.4

±

0.2

1.62

2.00

2.60

.567

.118

.748

1.08

.220

Applicable for nominal dimen

s

ion

s

 without direct tolerance indication:

DIN I

S

O 286 

±

 IT13

3.02

±

.008

2.27

±

.008

1.51

±

.008

.756

±

.008

2.18

±

.008

Issue B

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Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-F...

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Issue B

3

- 22

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-F...

3

Terminal design / Dimensions

K 3/4 

s

crew terminal

s

tightening torque ma

x

. 1.2 Nm

9.7

K3 

s

crew terminal

s

 M4

K4 

s

crew terminal

s

 M5

6

38.8

1

4

3

2

9.4

1

P1 blade terminal

s

38.8

6

9.6

1

4

3

2

blade terminal

s

DIN 46244-A6,3-0,8

X1 blade terminal

s

with 

s

eparate 

s

witching and relay circuit

1

4

3

2

9.6

6

9.8

29.3

38.8

blade terminal

s

DIN 46244-A6,3-0,8

Au

x

iliary contact

s

ver

s

ion H (

s

tandard, a

s

ymmetrical gold-flu

s

hed terminal

s

, 

s

ilver contact

s

1

2

11

14

12

5

17.9

5.1

10.2

14.5

blade terminal

s

1.53

.236

.236

1.53

.370

.382

.378

.378

.236

.386

1.15

1.53

.197

.705

.401

.200

.571

Installation drawing 

Trip time value

s

 indicated for front mounting on a vertical 

even 

s

urface

1

Terminal de

s

ign K

Terminal de

s

ign P

blow out outlet CBE

1

terminal
area

mounting area

2

7

30

8

42

29

7

blow out area
(minuaturable on re

q

ue

s

t)

4

2

30

8

42

29

1

.039

.039

.039

operating area
(reinforced in

s

ulation)

.157

.079

.079

.276

1.18

1.18

.276

.315

1.65

1.14

.315

1.65

1.14

Actuator configuration

Actuator de

s

ign

number of pole

s

: 1 - 4

Configuration: F1 / F4

Actuator long

Actuator 

s

hort

number of pole

s

: 1 - 4

Configuration: F9

Actuator long

number of pole

s

: 1

Configuration: F1 / F4 / F9

Actuator: Z  (blac

k

, without toggle, with 

s

lot)

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

16 A

This is a metric design and millimeter dimensions take precedence ( mm )

inch

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3

- 23

3

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

… time

s

 rated current

… time

s

 rated current

Curve K2 (

s

hort delay) for AC 50/60 Hz

… time

s

 rated current

… time

s

 rated current

… time

s

 rated current

T

rip time in 

s

econd

s

… time

s

 rated current

… time

s

 rated current

10000

1000

1

2

4

6

8

100

10

1

0.1

0.01

0.001

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

12

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

10000

1000

1

2

4

6

8

12

100

10

1

0.1

0.01

0.001

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

Curve M1 (medium delay) for DC

Curve F1 (in

s

tantaneou

s

) for DC

Curve M0 (medium delay) for AC/DC

Curve F2 (in

s

tantaneou

s

) for AC 50/60 Hz

Curve K1 (

s

hort delay) for DC

Other characteri

s

tic curve

s

 to 

s

pecial order (e. g. with impul

s

e delay for inru

s

h pea

ks

).

N.B.

All curve

s

 will only be maintained if the e

s

cutcheon i

s

 mounted on a vertical 

s

urface.

Curve M2 (medium delay) for AC 50/60 Hz

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

Typical time/current characteristics at 23 °C / +73.4 °F

Issue B

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Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-F...

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3

- 24

3

Accessories

S

pla

s

h cover with mounting plate and 

s

crew

s

1 pole
Y 303 565 01

mounting hole

s

2

1

18

30.7

16.7

Ø17.1 [.673]

Ø3.5 [.138] - M3

Ø4 [.157] - 6-32

 UNC

15.7

42.4 

±

0.15

2 pole
X 211 118 01

40

mounting hole

s

40.15 

±

0.15

19.2 

±

0.1

15.7

2

19

2.2

37.9

Ø 25.15 

±

0

.15

42.4 

±

0.15

Ø 3

.5 

 [.13

8] - M

3

Ø4 [

.157] - 6-32 UNC

3 pole
X 211 119 01

2

19

2.2

37.9

57

mounting hole

s

59.15 

±

0.15

37.8 

±

0.15

Ø

 25

.1

5 

±

.0.

15

42.4 

±

0.15

15.7

Ø3.5 [.138

] - M3

Ø4 [.1

57] - 6-32

 UNC

Toggle guard
Y 307 250 01

40

21

3.3

Ø 3.5

1.6 x 45

°

17.7

50.5

.079

.039

.079

.657

.708

1.20

1.670 

±

.006

.618

1.49

.748

.087

1.57

1.670 

.006

±

1.670 

.006

±

.618

1.58 

±

.006

.756

±

.004

Ø.990 

±

.0

0

6

.079

1.49

.748

.087

2.24

2.33

±

.006

.618

1.49 

±

.006

Ø

 .990

 

±

.006

Ø .138

1.57

.063x45

°

1.99

.697

This is a metric design and millimeter dimensions take precedence ( mm )

inch

All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications
without notice is reserved.Product markings may not be exactly as the ordering codes.
Errors and omissions excepted.

Typical time/current characteristics at 23 °C / +73.4 

°F

T

rip time in 

s

econd

s

… time

s

 rated current

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

Other characteri

s

tic curve

s

 to 

s

pecial order (e. g. with

impul

s

e delay for inru

s

h pea

ks

).

T

rip time in 

s

econd

s

… time

s

 rated current

Curve T2 (long delay) for AC 50/60 Hz

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

Curve T1 (long delay) for DC

N.B.

All curve

s

 will only be maintained if the e

s

cutcheon i

s

mounted on a vertical 

s

urface.

Shock directions / Mounting attitudes

1 2

34

5
6

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-F...

Issue B

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Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-T...

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Issue B

3

- 25

3

Description

Typical applications

Technical data

Single, two, three and four pole magnetic and hydraulic-magnetic circuit
breakers with trip-free mechanism and toggle actuation. A choice of
fast magnetic only or hydraulically delayed switching characteristics
(S-type MO or HM CBE to EN 60934) ensures suitability for a wide
range of applications. Featuring a combi-foot design for symmetric and
asymmetric rail mounting. Low temperature sensitivity at rated load.
Approved to CBE standard EN 60934 (IEC 60934).

Power supplies, control equipment, communication systems, EDP
systems.

8340-T...

single pole

three pole

For further details please see chapter: Technical Information 

Voltage rating

3 AC 415V; AC 240V (50/60Hz); DC 80V 
(higher DC voltages to special order)

Current rating range

0.02...50 A single pole 

(40 + 50 A DC only)

0.02...30 A  multipole

Auxiliary circuit 

1 A, AC 240 V/DC 65 V;  0.5 A DC 80 V

Typical life                        

3 AC 415 V AC 240 V:

0.02...30 A 6,000 operations at 1 x I

N

, inductive 

10,000 operations at 1 x I

N

, resistive

DC 80 V:

0.02...25 A 6,000 operations at 1 x I

N

, inductive

0.02...30 A 10,000 operations at 1 x I

N

, resistive

40 + 50 A

6,000 operations at 1 x I

N

, resistive

Ambient temperature 

-40...+85 °C  (-40...+185 °F)

Insulation co-ordination

rated impulse 

pollution

(IEC 60664 and 60664A)     withstand voltage

degree

2.5 kV                

2

reinforced insulation in operating area

Dielectric strength
(IEC 60664 and 60664A)     test voltage

operating area        

AC 3,000 V

pole to pole          

AC 1,500 V

main to aux. circuit  

AC 1,500 V

Insulation resistance

> 100 MΩ (DC 500 V)

Interrupting capacity I

cn

1,200 A at AC
2,000 A at DC

Interrupting capacity

I

N

0.02...20 A

25...30 A

(UL 1077) 

AC:

1-pole  AC 250 V/3,500A   AC 250 V/3,500A
2-pole

AC 250 V/3,500A   AC 250 V/5,000A

3-pole

3AC 250V/3,500A   3AC250V/5,000A

DC:

1-pole   0.02...50 A

DC 80 V/3,500 A

2-pole

0.02...30 A

DC 80 V/3500 A

Interrupting capacity
(UL 489A)

2,000 A

Degree of protection   

operating area IP40

(IEC 60529/DIN 40050)   

terminal area IP20

Vibration                 

with toggle down: 

10 g at 0.9 I

N

directions 1, 2, 3, 4, 5: 

10 g at 1 x I

N

with curves F1, F2:

10 g at 0.8 x I

N

in all planes.

(57-2000 Hz) ± 0.76 mm (10-57 Hz)
to IEC 60068-2-6, test Fc
10 frequency cycles/axis

Shock                      

directions 1, 2, 3, 4, 5:

100 g (11 ms) at 1 x I

N

direction 6:                     100 g (11 ms) at 0.8 x I

N

with curves F1, F2: 

100 g (11 ms) at 0.8 x I

N

to IEC 60068-2-27, test Ea

Corrosion                  

96 hours at 5 % salt mist, 
to IEC 60068-2-11, test Ka

Current

Curves and internal resistance per pole (Ω)

rating (A)

F1 

F2

K1, M1, T1, K2, M2, T2

0.02

1493

953

2669

2457

0.05

276               152

452

376

0.1

58

37

100

94

0.25

8.2

6.0

15.5

14.7

0.5

2.3

1.47

3.9

3.2

0.75

0.98

0.63

1.65

1.56

1

0.58

0.35

0.95

0.90

2

0.145

0.096 0.26

0.20

2.5

0.096

0.061

0.15

0.15

3

0.065

0.048

0.10

0.10

5

0.025

< 0.02    

0.042

0.040

6

< 0.02

< 0.02

0.029

0.028

8

< 0.02

< 0.02

< 0.02

< 0.02

10

< 0.02

< 0.02

< 0.02

< 0.02

12

< 0.02

< 0.02

< 0.02

< 0.02

15

< 0.02

< 0.02

< 0.02

< 0.02

16

< 0.02

< 0.02

< 0.02

< 0.02

20

< 0.02

< 0.02

< 0.02

< 0.02

25

< 0.02

< 0.02

< 0.02

< 0.02

30

< 0.02

< 0.02

< 0.02

< 0.02

40

≤ 0.01

-

≤ 0.01

-

50

≤ 0.01

-

≤ 0.01

-

Standard current ratings and typical internal resistance values

Authority     

Voltage ratings     

Current ratings

VDE (EN 60934)

3 AC 415 V; AC 240 V; DC 80 V

0.02...30 A   

1 to 6-pole

DC 80 V

0.02...50 A   1-pole

UL1077, CSA 

DC 80 V

0.02...50 A   

1 to 6-pole

3 AC 250 V; AC 250 V

0.02...30 A   

1 to 6-pole

UL 489 A

DC 80 V

0.05...30 A   1, 2-pole

CCC

3 AC 415 V; AC 240 V

0.02...30 A

DC 80 V

0.02...50 A   1, 2-pole

Approvals

Humidity                   

240 hours at 95 % RH,
to IEC 60068-2-78, test Cab

Mass                   

approx. 98 g per pole

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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Issue B

3

- 26

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-T...

3

Dimensions

4.5

OFF

ON

1

LINE

2

LOAD

s

hort toggle

57

43.4

24.4

10-12

9-11

3-pole

2-pole

1-pole

19

38

57

long toggle

30°

89

OFF

ON

30°

s

lot for fitting

label

s

 from

Phoenix

45

41.7

19.7

1

LINE

2

LOAD

.776

1.64

1.77

3.50

70.6

2.78

auxiliary contact terminal M3
tightening tor

q

ue max. 0.5 Nm

wire 

s

ection max. 2.5 mm

2

(AWG 14)

main contact terminal M4
tightening tor

q

ue 1.2 Nm

wire 

s

ection max.:

0.75 … 10 mm

2

 rigid conductor

( AWG 18 … AWG 8)
0.75 …  6 mm

2

 flexible conductor

( AWG 18 … AWG 10)

2.24

1.71

.961

.748

1.50

2.24

S

nap-in 

s

oc

k

et for:

G profile      EN 50035-G32
top-hat rail  EN 50022-35x7.5
                    EN 50022-35x15/1.5

.354-.433

.394-.472

.177

Ordering information

Type No.
8340

circuit breaker with toggle actuator

Mounting
T

rail mounting

Configuration
1

snap-on installation

Number of poles
0

single pole, switch only

1

single pole protected

2

two pole protected

3

three pole protected

4

four pole protected

5

two pole, protected on one poly only

6

four pole, protected on poles 1, 2 and 3 only

7

two pole, switch only

Panel hardware
0

without panel hardware

Terminal design (main contact)
K1

recessed screw/pressure plates M4

Characteristic curve

Curve F, instantaneous trip:

F1

DC

trip at 1.01-1.5 x I

N

F2

AC 60/50 Hz

trip at 1.01-1.5 x I

N

Curve K, short delay:

K1

DC

trip at 2 x I

N

0.16-1.2 s

K2

AC 60/50 Hz

trip at 2 x I

N

0.13-1.6 s

Curve M, medium delay:

M1

DC

trip at 2 x I

N

0.6-7.5 s

M2

AC 60/50 Hz 

trip at 2 x I

N

2.2-20 s

Without characteristic curve

Q0

switch only

Curve T, long delay: 

T1

DC

trip at 2 x I

N

10-70 s

T2

AC 60/50 Hz

trip at 2 x I

N

15-150 s

Other characteristic curves to special order 

(e.g. pulse-delayed, high inrush currents, 
capacitive loads)

Actuator colour / design
A

black, long toggle

B

white, long toggle

C

blue, long toggle

K

black, short toggle

L

white, short toggle

M

blue, short toggle

other colours to special order

Marking on actuator
0

without marking

L

I-O; ON-OFF

M

I-O; ON-OFF (I

N

, U

N

, trip curve, 

schematic diagram on housing top)

N

I-O; ON-OFF (I

N

, on housing top) 

Auxiliary contacts
H0

without auxiliary contacts

H1

with auxiliary contact

H2

with auxiliary contact 
on one pole only (multipole)

Auxiliary contact function 

(see internal connection diagrams)

2

1 N/O contact 

3

1 N/C contact

Auxiliary contact terminal design

6

screw/pressure plate M3

Current ratings
0.02...50 A

Approval (optional)
U

UL 489 A 

8340 - T

1   1

0 - K1 M1 - A L H1 2 6  - 10 A - U    

ordering example

Installation drawing 

mounting area

min. 18

1

LINE

2

LOAD

min. 1

blow out 
outlet CBE

blow out area
(minuaturable on re

q

ue

s

t)

min .039

operating area

(reinforced in

s

ulation)

terminal area

min .709

}

magnetic,
hydraulic-magnetic

This is a metric design and millimeter dimensions take precedence ( mm )

inch

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 27

3

Internal connection diagrams

unit II

unit I

I >

S

i

S

i

S

i

S

i

2 load

line 1

I >

S

i

S

i

S

i

S

i

2 load

. . .

unit IV

. . .

S

i

N/C
H131

S

i

N/O
H121

line 1

I >

S

i

S

i

S

i

S

i

line 1

2 load

Optional N/C or N/O auxiliary
contact (

S

i)

1-pole
protected magnetically

multipole

1-pole protected
hydraulic-magnetically

S

i

S

i

line 1

2 load

I >

unit III

or

or

or

or

Typical time/current characteristics at 23 °C / +73.4 

°F

T

rip time in 

s

econd

s

… time

s

 rated current

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

Other characteri

s

tic curve

s

 to 

s

pecial order (e. g. with

impul

s

e delay for inru

s

h pea

ks

).

T

rip time in 

s

econd

s

… time

s

 rated current

Curve T2 (long delay) for AC 50/60 Hz

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

Curve T1 (long delay) for DC

N.B.

All curve

s

 will only be maintained if the e

s

cutcheon i

s

mounted on a vertical 

s

urface.

Shock directions 

S

i

AUX

S

i

AUX

4

5

6

3

1

2

Issue B

www.e-t-a.com

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-T...

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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Issue B

3

- 28

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-T...

3

Typical time/current characteristics at 23 °C / +73.4 °F

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

… time

s

 rated current

… time

s

 rated current

Curve K2 (

s

hort delay) for AC 50/60 Hz

… time

s

 rated current

… time

s

 rated current

… time

s

 rated current

T

rip time in 

s

econd

s

… time

s

 rated current

… time

s

 rated current

10000

1000

1

2

4

6

8

100

10

1

0.1

0.01

0.001

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

12

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

10000

1000

1

2

4

6

8

12

100

10

1

0.1

0.01

0.001

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

Curve M1 (medium delay) for DC

Curve F1 (in

s

tantaneou

s

) for DC

Curve M0 (medium delay) for AC/DC

Curve F2 (in

s

tantaneou

s

) for AC 50/60 Hz

Curve K1 (

s

hort delay) for DC

Other characteri

s

tic curve

s

 to 

s

pecial order (e. g. with impul

s

e delay for inru

s

h pea

ks

).

N.B.

All curve

s

 will only be maintained if the e

s

cutcheon i

s

 mounted on a vertical 

s

urface.

Curve M2 (medium delay) for AC 50/60 Hz

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

T

rip time in 

s

econd

s

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 29

3

Accessories

Art.-Nr. Y 308 495 01

IEC 664 500 V/100 A (40°C)

Art.-Nr. Y 308 495 01

IEC 664 500 V/100 A (40°C)

mar

k

ing 4 x on bu

s

bar

51 x 19 = 969

19

4

±

0.2

4.6

14.7

1.5

27.2

±

0.4

12.5

995

+2

Art.-Nr. Y 308 496 01

IEC 664 500 V/100 A (40°C)

Art.-Nr. Y 308 496 01

IEC 664 500 V/100 A (40°C)

mar

k

ing 4 x on bu

s

bar

51x19=969

19

4

±

0.2

12.5

L2

L1

L1

L2

L2

L1

L1

L2

L2

L1

L1

L2

L2

L1

L1

L2

L2

L1

L1

L2

L2

L1

L1

L2

L2

L1

L1

L2

L2

L1

L1

L2

L1

L2

L2

L1

995

+2

 15.8

1.5

29.8

±

0.4

17.3

~2.76

50 pin lug

s

 to

DIN 46230
tinned copper

ø2.5

.099

~70

Connector bu

s

 lin

ks

 -K10

X210 589 01/

2.5 mm

2

, (AWG 14) (blac

k

) up to 20 A max. load

X210 589 02/

1.5 mm

2

, (AWG 16) (brown) up to 13 A max. load

39.173

+.079

.492

.157

±

.008

.748

51 x .748 = 38.150

.181

1.071

±

.016

.579

.059

39.173

+.079

.492

.157

±

.008

.748

51 x .748 = 38.150

.622

.681

1.173

±

.016

.059

Bu

s

bar 1-pole

Y 308 495 01

The one metre long bu

s

bar

s

 can be cut to 

s

uitable length

s

.

Plug-on cap

s

 can be fitted on the end

s

 to provide bru

s

h

contact protection.
I

max 

- bu

s

bar 100 A (40°C)

Ele

k

trotechni

s

che Apparate GmbH

D-90418 Altdorf bei Nürnberg

Ele

k

trotechni

s

che Apparate GmbH

D-90418 Altdorf bei Nürnberg

Plug-on cap

, 1-pole

Y 307 851 01

Bu

s

bar 2-pole

Y 308 496 01

I

max

 - bu

s

bar 100 A (40°C)

Ele

k

trotechni

s

che Apparate GmbH

D-90418 Altdorf bei Nürnberg

Ele

k

trotechni

s

che Apparate GmbH

D-90418 Altdorf bei Nürnberg

Plug-on cap

, bu

s

bar 2/3-pole

Y 308 506 01

Art.-Nr. Y 308 497 01

IEC 664 500 V/100 A (40°C)

Art.-Nr. Y 308 497 01

IEC 664 500 V/100 A (40°C)

mar

k

ing 4 x on bu

s

bar

50 x 19 = 950

19

4

±

0,2

12.5

L3

L1

L2

L2

L2

L3

L3

L1

L2

L2

L1

L3

L3

L1

L2

L2

L2

L2

L1

L3

L3

L1

L2

L2

L1

L3

L3

L1

L2

L2

L1

L3

L3

L2

L2

L2

995

+2

 15.8

1.5

29.8

±

0.4

17.3

S

upply terminal 

I

max

  

63 A

Y 308 504 01

Max. tightening tor

q

ue of terminal 

s

crew 2 Nm

Max. cable cro

ss

 

s

ection:

25 mm

2

 / 

s

ingle 

s

trand

16 mm

2

 / multi

s

trand

with wire end ferrule

18.4

4

13.6

31

13

1.5

39.173

+.079

.492

.157

±

.008

.748

50 x .748 = 37.402

.622

.681

1.173

±

.016

.059

1.220

.157

.535

.059

.512

.724

Ele

k

trotechni

s

che Apparate GmbH

D-90418 Altdorf bei Nürnberg

Ele

k

trotechni

s

che Apparate GmbH

D-90418 Altdorf bei Nürnberg

Bu

s

bar 3-pole

Y 308 497 01

I

max

 - bu

s

bar 100 A (40°C)

Plug-on cap

, bu

s

bar 2/3-pole

Y 308 506 01

A

This is a metric design and millimeter dimensions take precedence ( mm )

inch

All dimensions without tolerances are for reference only. In the interest of improved design,
performance and cost effectiveness the right to make changes in these specifications
without notice is reserved.Product markings may not be exactly as the ordering codes.
Errors and omissions excepted.

Caution:

When using multipole busbars please leave at least one pole’s
width between two adjacent line entry terminals.

Issue B

www.e-t-a.com

Magnetic and Hydraulic-Magnetic Circuit Breaker 8340-T...

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 31

3

Current 

Trip curves and internal resistance (Ω) per pole 

rating (A)

K1, M1, T1,

K2, M2, T2

0.05

452

376

0.1

100

94

1

0.95

0.90

2

0.26

0.20 

3

0.10

0.10

5

0.042

0.040

10

< 0.02

< 0.02

15

< 0.02

< 0.02

20

< 0.02

< 0.02

25

< 0.02

< 0.02

30

< 0.02

< 0.02

40

< 0.01

< 0.01

50

< 0.01

< 0.01

60

< 0.01

< 0.01

80

< 0.01

< 0.01

100

< 0.01

< 0.01

125

< 0.01

< 0.01

Description

Typical applications

Approvals

Technical data

Single or multipole hydraulic-magnetic circuit breakers with trip-free-
mechanism and toggle actuation. A choice of switching characteristics
ensures suitability for a wide range of applications. Industry standard
dimensions and panel mounting. Auxiliary contacts optional. Low
temperature sensitivity at rated load. 
Approved to CBE standard EN 60934 (IEC 60934) S-type HM CBE.

In the business fields Communication and Transport: power supplies,
switchgear, instrumentation and process control engineering.

8345

1-pole

2-pole

Voltage rating

3 AC 415 V; AC 277/480 V; 
AC 120/240 V; AC 240 V; DC 80 V,

Current rating range

0.05...125 A single and multipole
150...180 A single pole, two poles 

connected in parallel

higher ratings upon request 

Auxiliary circuit

AC 240 V 6 A
DC 28 V 3 A 
DC 65 V 1 A
DC 80 V 0.5 A

Typical life

10,000 operations at 1 x I

N

Ambient temperature

-40...+85 °C (-40...+185 °F)

Insulation co-ordination
(IEC 60664)

2.5 kV/2
reinforced insulation in operating area

Dielectric strength

test voltage

operating area

AC 3,000 V 

pole to pole 

AC 1,500 V

main to auxiliary circuit

AC 3,000 V

switching to trip circuit

AC 1,500 V

Insulation resistance 

> 100 MΩ (DC 500 V)

Degree of protection

operating area IP40 

(IEC 60529)

terminal area IP00

Vibration                  

upside down: 

10 g (57-2000 Hz) ± 0,76 mm (10-57 Hz)
at 0.9 I

N

directions 1, 2, 3, 4, 5: 

10 g at 1 x I

N

with curves F1, F2:

10 g at 0.8 x I

N

in all planes.

(57-2000 Hz) ± 0.76 mm (10-57 Hz)
to IEC 60068-2-6, test Fc
10 frequency cycles/axis

Shock                      

directions 1, 2, 3, 4, 5:

100 g (11 ms) at 1 x I

N

, 

direction 6:

100 g (11 ms) at 0.8 x I

N

, 

with curves F1, F2: 

100 g (11 ms) at 0.8 x I

N

to IEC 60068-2-27, test Ea

Corrosion

96 hours at 5% salt mist, 
to IEC 60068-2-11, test Ka

Humidity 

240 hours at 95 % RH, 
to IEC 60068-2-78, test Cab

Mass 

approx. 90 - 120 g per pole
depending on version

VDE (EN 60934)

1- to 6-pole

UL 489

UL 1077

1- to 6-pole

CCC

1- to 4-pole

Standard current ratings and typical internal resistance values

Interrupting capacity

to EN 60934, UL 489 and UL 1077

IEC 60934 – test series E

voltage

number of  poles

I

N

max. (A)

I

cn  

(A)

DC 80 V

1 + 2

0.02...125

10,000

AC 240/415 V

1 - 6

0.02...80

6 x I

N

AC 240 V

1

0.02...20

5,000

UL 489 – test sequence Z

voltage

number of  poles

I

N

max. (A)

I

cn  

(A)

DC 80 V

1 + 2

0.5...125

10,000

AC 120 V

1

0.5...80

5,000

AC 120/240 V

1 

0.5...80

5,000

AC 240 V

1 (2)

0.5...20

5,000

UL 1077

voltage

number of  poles

I

N

max. (A)

I

cn  

(A)

DC 80 V

1 + 2

0.02...125

10,000

AC 277/480 V

1 - 6

0.02...70  

5,000 

Magnetic and Hydraulic-Magnetic Circuit Breaker 8345-...

Issue B

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Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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Issue B

3

- 32

Magnetic and Hydraulic-Magnetic Circuit Breaker 8345-...

3

Type number
X8345

Module
S

auxiliary contact module

Auxiliary contacts
01

in all poles

02

in pole 1 only

03

in poles 1+ 3 only

04

in pole 2 only

Auxiliary contact version
H

auxiliary contacts standard, gold-flushed
(asymmetrical terminals)

K

auxiliary contacts, tin-plated (symmetrical terminals)

Auxiliary contact function
W1

1 changeover

W2

2 changeover

Terminal design
02

microswitch with blade terminals 
DIN 46244-A2.8-0.5

M

mounted to base unit

X8345   -

S 01 H W1 02 M   

ordering example

Ordering information for auxiliary contact module

Ordering information for EN 60934 and UL 1077

Type No.
8345

Mounting
B

flange mounting, with rectangular aperture with mounting nut 6-32UNC

C

flange mounting, with rectangular aperture with mounting nut M3

E

flange mounting, with round aperture with mounting nut 6-32UNC

F

flange mounting, with round aperture with mounting nut M3

X

flange mounting, with rectangular aperture, with 2 mounting brackets

Configuration
0

without barrier

1

with small barrier

2

with large barrier (requested for multipole AC applications with 
approvals to UL 489, UL 1077, IEC)

Number of poles
0

single pole unprotected

1

single pole protected

2

two pole protected 

3

three pole protected 

4

four pole protected 

P

one pole protected, two poles connected in parallel
characteristic curves E/H/R upon request

Q

one pole protected, three poles connected in parallel
characteristic curves E/H/R upon request

R

one pole protected, four poles connected in parallel
characteristic curves E/H/R upon request

S

one pole protected, five poles connected in parallel
characteristic curves E/H/R upon request

Actuator configuration
A

all poles with standard toggle

B

reduced number of standard toggles

Z

without actuator

Terminal design
L

screw terminals M5 ≤ 50 A 

M

solder terminals ≤ 75 A 

P

blade terminals  ≤ 35 A 

R

round connectors 6 mm

S

stud terminals M5 ≤ 60 A

T

stud terminals 10-32UNF-3A ≤ 60 A 

U

stud terminals M6 ≤ 125 A

V

stud terminals 1/4-20UNC-3A ≤ 125 A

W

laminated round terminals ≤ 125 A 

Terminal hardware
0

without

3

with washer and nut

6 

Phillips screws

Characteristic curve
K1

short delay DC 

K2

short delay AC 

M0

medium delay AC/DC 

M1

medium delay DC 

M2  

medium delay AC 

Q0

switch only

T1

long delay DC

T2

long delay AC

Version
D

standard

Colour configuration
B1

black actuator

B2

white actuator

B3

blue actuator

Marking

front plate

actuator base

B1

without

ON-OFF 

B2

I

N

ON-OFF 

B3

I

N

ON-OFF

characteristic curve

B4

I

N

, characteristic curve,   ON-OFF

wiring diagram on side

Rated voltage
B

AC or ≤ 80 V DC

C

DC ≤ 80 V

AC ≤ 277 V
(only for  configurations 

0 and 1 for UL 1077)

8345  - C 0 1 A - U 3 M1  -  D

B1  B1  B 

8345  - C 0 1 A - U 3 M1  -  D

B1  B1  B  

Current ratings

0.05...125 A
higher current ratings 
upon request

8345  - C 0 1 A - U 3 M1  -  D

B1  B1  B - 60 A

ordering example

Remote trip coil available to special order!

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 33

3

Type number
X8345

Module
S

auxiliary contact module

Auxiliary contacts
01

in all poles

02

in pole 1 only

04

in pole 2 only

Auxiliary contact version
K

auxiliary contacts, tin-plated (symmetrical terminals)

Auxiliary contact function
W1

1 changeover

Terminal design
02

microswitch with blade terminals 
DIN 46244-A2.8-0.5

M

mounted to base unit

X8345   -

S 01 K W1 02 M   

ordering example

Ordering information for auxiliary contact module

Ordering information for UL 489

Type No.
8345

Mounting
B

flange mounting, with rectangular aperture with mounting nut 6-32UNC

C

flange mounting, with rectangular aperture with mounting nut M3

E

flange mounting, with round aperture with mounting nut 6-32UNC

F

flange mounting, with round aperture with mounting nut M3

X

flange mounting, with rectangular aperture, with 2 mounting brackets

Configuration
0

without barrier for DC

1

with small barrier for DC (optional)

2

with large barrier  for AC

Number of poles
1

single pole protected

2

two pole protected 

Actuator configuration
A

all poles with standard toggle

B

reduced number of standard toggles

Z

without actuator

Terminal design
L

screw terminals M5 ≤ 50 A 

M

solder terminals ≤ 75 A 

P

blade terminals  ≤ 35 A 

R

round connectors 6 mm

S

stud terminals M5 ≤ 60 A

T

stud terminals 10-32UNF-3A ≤ 60 A 

U

stud terminals M6 ≤ 125 A

V

stud terminals 1/4-20UNC-3A ≤ 125 A

W

laminated round terminals ≤ 125 A 

Terminal hardware
0

without

3

with washer and nut

6 

Phillips screws

Characteristic curve
K1

short delay DC 

K2

short delay AC 

M1

medium delay DC 

M2  

medium delay AC 

T1

long delay DC

T2

long delay AC

Version
D

standard

Colour configuration
B1

black actuator

B2

white actuator

B3

blue actuator

Marking

front plate

actuator base

B1

without

ON-OFF 

B2

I

N

ON-OFF 

B3

I

N

ON-OFF

characteristic curve

B4

I

N

, characteristic curve,   ON-OFF

wiring diagram on side

Rated voltage
B

AC or ≤ 80 V DC

Current ratings

0.05...125 A for DC
0.05...20 A for AC
higher current ratings 
upon request

Approvals (optional)
V

UL 489 

8345  - C 0 1 A - U 3 M1  -  D

B1  B1  B - 60 A - .

ordering example

Remote trip coil available to special order!

Issue B

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Magnetic and Hydraulic-Magnetic Circuit Breaker 8345-...

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www.e-t-a.com

Issue B

3

- 34

Magnetic and Hydraulic-Magnetic Circuit Breaker 8345-...

3

19

.748

n x 19 + 24 (62)

n x .748 + .945 (2.44)

n x 19 + 40 (78)

n x .748 + 1.57 (3.07)

n x 19 + 4 (42)

n x .748 + .157 (1.65)

75

2.95

Interpha

s

e barrier

mounting 

s

crew

M6

2

.079

7

.276

40

1.57

62.5

2.46

Ø7

.276

7

.276

79.1

3.11

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

Mounting ver

s

ion X

Flange mounting, with rectangular aperture, with 2 mounting brac

k

et

s

LOAD

LINE

Mounting ver

s

ion E/F

Flange mounting round aperture

Cut-out dimen

s

ion

s

:

48

63.5

28.6

Mounting ver

s

ion B/C

Flange mounting rectangular aperture

2.50

pole

19.1 

±

 0.1

1

2

3

4

number of pole

s

 1 to 4

mounting thread M3 or 6-32
all dimen

s

ion

s

 referred to the top edge

mounting depth 4.2 mm/.165 in.
max. in

s

ertion depth 5.5 mm

max. tightening tor

q

ue 0.33 Nm

1.89

1.13

Cut-out dimen

s

ion

s

:

1-pole

multipole

52.4

36.8

11

19.2

ø4

.157

1.45

2.06

.433

.756

28.7

47.8

9.6

2.63

1.88

.378

1.13

66.9

76.5
3.01

ø15.4

3.5

±

0.1

 (M3)

4

+0.1
-0.15

(6-32UNC)

15.45

1-pole

.606

.138

±

.004

 (M3)

.157

+.004
-.006

(6-32UNC)

.608

44.75

1.76

4-pole

ø15.4

.606

ON

OFF

67.7

2.67

48

63.5

28.6

2.50

1.89

1.13

LOAD

LINE

67.7

2.67

ON

OFF

pole

1

2

3

4

number of pole

s

 1 to 4

mounting thread M3 or 6-32
all dimen

s

ion

s

 referred to the top edge

mounting depth 4.2 mm/.165 in.
max. in

s

ertion depth 5.5 mm

max. tightening tor

q

ue 0.33 Nm

.752 

±

 .004

19.1
.752

n x 19.1
n x .752

19.1 

±

 0.1

.752 

±

 .004

3.5

±

0.1

 (M3)

4

+0.1
-0.15

(6-32UNC)

.138

±

.004

 (M3)

.157

+.004
-.006

(6-32UNC)

19.1
.752

n x 19.1
n x .752

max. panel thic

k

ne

ss

: 3 mm

Dimensions

Installation drawing

blow out 

s

pace

(can be reduced on re

q

ue

s

t)

operating area

(reinforced in

s

ulation)

2

.079

8

.315

29

1.14

terminal 
area

mounting
area

45

1.77

1

.039

2

.079

This is a metric design and millimeter dimensions take precedence ( mm )

inch

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

3

- 35

3

multipole

1-pole protected
hydraulic-magnetically

1-pole
protected magnetically

line 1

11(C)

2 (load)

I >

14(NO)

12(NC)

line  1

2 (load)

I >

11(C)

14(NO)

12(NC)

unit 2

unit 1

11(C)

14(NO)

12(NC)

line  1

2 (load)

2 (load)

line  1

I >

I >

11(C)

14(NO)

12(NC)

unit 3

. . .

unit 4

. . .

Internal connection diagrams

Terminal design / Dimensions

49.2

9.5

LOAD

LINE

blade terminal A6.3-0.8
(QC .250) DIN 46244

.374

1.94

P - with blade terminals

L - with screw terminals

ø6

LOAD

LINE

M - with solder terminals

3

19.9

2

4.2

4

.118

.236

.079

.165

.157

.783

49.2

18.8

1.5

.059

.740

1.94

49.2

1.94

9.5

LOAD

LINE

9.4

1.5

terminal with flat head screw M5
tightening torque max. 1.2 Nm

.374

.370

.059

auxiliary contacts version K symmetrical terminals

NO

NC

C

7.5

7.5

LOAD

LINE

.295

.295

17.5

16.6

.689

.653

NC  NO     C

S/U/T/V - with auxiliary contacts (version H)

    asymmetrical terminals (not for UL 489)

49.2

auxiliary contact
module
(change over)

.669

.441

.295

.402

1.94

tightening torque:
10-32 UNF, M5 

max. 2 Nm

1/4-20 UNC, M6  max. 3 Nm

.685

5.08

10.2

11.2

17

LOAD

LINE

16.5

17.4

NC NO     C

.649

R - round connectors 

D = 6 mm (dia .236) (version H) asymmetrical

terminals (not for UL 489)

1.94

.756

49.2

19.2

LOAD

LINE

NC NO     C

17

.669

19.2

.756

13.9
.547

12.8
.504

This is a metric design and millimeter dimensions take precedence ( mm )

inch

P  1-pole protected, 2-poles connected in parallel

for rating currents from 150 to 180 A

LOAD

LINE

4

tightening torque:
M6  max. 3 Nm

LOAD

LINE

M8

12

17

93.2

=

=

28

tightening torque:
M8  max. 6 Nm

49.2

.157

.472

.669

1.94

3.67

1.10

Number of poles / Dimensions

6.3

 

+0.1

plug-in hole

W - laminated round terminal

s

12.2

5

.197

.480

.248

 

+.004

cylindrical terminal area

49.2

27.6

LOAD

LINE

NC NO     C

ø6.3

1.94

ø.248

1.09

Issue B

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Magnetic and Hydraulic-Magnetic Circuit Breaker 8345-...

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Issue B

3

- 36

Magnetic and Hydraulic-Magnetic Circuit Breaker 8345-...

3

T

rip time in seconds

Curve K2 (short delay) for AC 50/60 Hz

T

rip time in seconds

… times rated current

T

rip time in seconds

Curve M2 (medium delay) for AC 50/60 Hz

… times rated current

Curve M1 (medium delay )  for DC

T

rip time in seconds

T

rip time in seconds

Curve K1 (short delay) for DC

10000

1000

1

2

4

6

8

100

10

1

0.1

0.01

0.001

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

12

0,1

0,01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

Curve M0 (medium delay) for AC/DC

(trip time at rated current and all poles symmetrically loaded)

Other characteristic curves to special order ( e. g. pulse delayed, for high inrush currents or capacitive loads).

All curves will only be maintained if the escutcheon is mounted on a vertical surface.

… times rated current

… times rated current

… times rated current

Curve T2 (long delay) for AC 50/60 Hz

Curve T1 (long delay) for DC

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

0.1

0.01

0.001

10000

1000

1

2

4

6

8

12

100

10

1

3

0

5

7

9

10

11

T

rip time in seconds

… times rated current

… times rated current

T

rip time in seconds

Typical time/current characteristics at +23 °C / +73.4 °F

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com