Heat Sinks

Assemblies

Accessories

THE GLOBAL EXPERT

IN 

SOLID STATE RELAY

TECHNOLOGY

Heat Sinks & SSR Assemblies

A

i

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

C

rydom has a 

distinguished record of 

providing advanced, high 

quality products with 

timely delivery and 

competitive pricing. Your 

success in today’s 

fastpaced global markets 

hinges on working with suppliers who respond 

quickly and appropriately to your every need.

In addition to an extensive selection of catalog 

off-the-shelf items, Crydom offers 

custom-designed solid state relays. Fact is we 

specialize in satisfying the most demanding 

environmental and performance requirements 

our customers can devise. Give us your specs, 

and watch us exceed your expectations!

At Crydom’s custom-built 

100,000 square 

foot manufacturing facility,

 virtually 

everything is accomplished in-house to assure 

complete control over delivery, production, and 

above all quality. With design, development, 

manufacturing and management personnel 

under one roof, we’re geared for fast response 

to your requirements.

In 

Design Engineering

, we focus on pushing 

performance, reliability and quality standards 

ever higher. Working under a conservative 

design and rating philosophy, Crydom’s 

seasoned engineering team makes extensive 

use of CAD to optimize design of mechanical 

parts.

As a result of these efforts, Crydom has 

acquired an impressive list of patents in solid 

state relay technology, while continuing to 

create new circuit and technology-related 

inventions as part of our ongoing R & D 

programs.

Once the design is solidified, 

Production 

Engineering

 is responsible for the engineering 

control of the techniques used throughout 

manufacturing. This department works closely 

with our design engineering group, establishes 

assembly processes, and oversees a 

comprehensive on-premises machine shop 

which fabricates our assembly fixtures.

As the work progresses, 

Material and 

Production Control

 employ our advanced 

computer system, upgraded with our 

customized software to keep manufacturing 

operations humming. The computer system 

employs integral MRP and MSP capabilities to 

generate detailed scheduling and planning 

information.

Ceramic Hybrid Manufacturing

 also is 

performed in-house. Crydom manufactures all 

metallized ceramic substrates used in our 

relays — a major factor in product performance 

and reliability, including direct bond copper 

substrates.

 

www.crydom.com

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

Quality Assurance

 conducts ongoing product reliability 

verification tests,  gathering precise data on the quality 
of our power semiconductor vendors and the silicon 
chips they provide. Additional tests are performed to 
meet specific customer burn-in requirements.

Crydom tests are exhaustive, including 

100% 

verification

 at final test. After units are completely 

assembled, they must pass a complete set of electrical 
tests, which are performed twice, once prior to 
encapsulation and then again afterward.

Because of our dedication to quality, Crydom was one of 
the first American companies to achieve full certification 
to the demanding standards of ISO 9001. In addition, 
most Crydom products are approved by UL, CSA, VDE, 
TUV and carry the CE Mark signifying conformance with 
the latest European directives. Certain panel mount and 
din rail mount relays carry UL 508A SCCR ratings.

Learn how an alliance with the world leader in solid state 
relays can pay off for you. For details, call your 
authorized Crydom distributor today.

Heat Sinks & SSR Assemblies

Crydom HS Series Heat Sinks

Crydom SSR and Heat Sink Assemblies

Thermal Management is of prime importance in the application and 
use of Panel Mount Solid State Relays due to their internal power 
dissipation of approximately 1 watt/amp of switched load current.  
Crydom’s HS Series of heat sinks, designed with “state of the art” 
thermal design software, offers optimized thermal performance, 
size and cost for a variety of single, dual and three phase Solid State 
Relay applications.

Designed to accept industry standard SSRs, the HS series includes 
heat sinks with ratings from 5 °C per watt to 0.5 °C per watt which 
are suitable for combined loads from 10 amps to 100 amps. With 
models accepting one, two or three SSRs, the HS series heat sinks 
can be either panel mounted or DIN rail mounted when combined 
with optional DIN rail mounting bracket kits.

Crydom also offers a variety of accessories which make it easier for 
the user to select, configure and install SSRs and heat sinks for your 
application including Thermal Interface pads, clear touch safe SSR 
covers, SSR mounting hardware and Heat Sink mounting hardware 
including DIN rail brackets. 

For more information on Heat Sink selection and available 
calculation tools from Crydom, see page 4 of this catalog or go to 

www.crydom.com/en/HSseries

.

Crydom offers a variety of its world class standard off-the-shelf 
single, dual and three phase Solid State Relays mounted on the new 
Crydom HS series Heat Sinks.  Our expertise in both SSR design and 
thermal management enables us to offer optimized pre-assembled 
solutions for SSR applications from 5 to 80+ amps.  Each Assembly 
is ready-to-use thus reducing procurement activities, secondary 
machining, and assembly labor. 

The standard Crydom SSR/Heat Sink assemblies are either DIN rail 
mounted or Panel mounted depending upon model selected, and 
are available with either one pre-installed single channel SSR, dual 
SSR or three phase SSR . Customer installed options available for 
the assemblies include clear plastic touch safe SSR covers and 
copper terminal lugs suitable for up to 6 AWG wire.

If you don’t find the exact combination of Crydom SSRs and Heat 
Sinks that you need, Crydom offers custom adapted assemblies for 
applications where further optimization is required for cost, size or 
performance.

For more information on SSR/Heat Sink selection and available 
selection tools from Crydom, see page 9 of this catalog or go to 

www.crydom.com/en/HSseries

.

Heat Sinks

Heat Sinks

Accessories

Accessories

Assemblies

Assemblies

SSR/Heat Sink Assembly Thermal Simulation

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

4

Questions?

Call or e-mail 

+1 (877) 502 5500

 +44 (0) 1202 606030

sales@crydom.com

sales-europe@crydom.com

Americas

Europe

Why Heat Sinks are required for Reliable Solid

State Relay operation

How to calculate and select a Heat Sink for a

given Solid State Relay application

Heat Sinks

 are required to insure the proper operation and long term 

reliability of Solid State Relays because they provide a means to dissipate 
the power that is normally developed internally in the SSR into the 
surrounding ambient air and maintain a safe operating temperature.

All SSRs in their conduction state create thermal energy in the output 
semiconductor at the rate of approximately 1 to 1.5 watts per ampere of load 
current for AC output SSRs, and 0.2 to 1.5 watts per ampere of load current 
for DC output SSRs depending upon their design. This power dissipation 
raises the Solid State Relay’s operating temperature above the surrounding 
ambient.

Solid State Relays can operate reliably with out heat sinks up to 
approximately 5 amps of load current depending upon model, duty cycle 
and ambient temperature.  Free air ratings of traditional panel mount SSRs 
may be as high as 8 to 10 amps, but this rating relies on the SSRs exposed 
metal base plate acting as a heat sink, meaning that it must be exposed to 
ambient air.  

Heat Sinks

 are made of high thermal conductive material such as 

aluminum.  Not only is aluminum’s thermal conductivity high, its cost is 
relatively low.  Although other materials such as steel may provide a limited 
measure of heat sinking, thermal conductivity of these materials are 
relatively low compared to aluminum and therefore far less effective as a 

Heat Sink

.  Coatings also tend to diminish the thermal dissipation 

effectiveness of most materials and except anodizing, should be avoided.

Heat Sink

 performance is rated by thermal impedance, measured in °C per 

watt (°C/W) (thermal impedance is the inverse of thermal conductivity).  
Thermal impedance represents the resistance to the transfer of thermal 
energy, therefore lower numerical thermal impedance ratings mean more 
efficient heat transfer.  

Thermal Impedance ratings of 

Heat Sinks

 are based upon natural 

convection air flow.  To achieve this performance, the 

Heat Sink

 must be 

oriented such that air flow over its finned surface is maximized.  Generally 
this means the fins should be orientated vertically. 

Significant improvement in 

Heat Sink

 performance can be achieved by 

providing forced air flow over the 

Heat Sink’s

 surface area.  Fans delivering 

relatively small volumes of air can reduce the Heat Sink’s thermal 
impedance substantially, thereby improving its efficiency and consequently 
the SSRs reliability.

The basic structure of a Solid State Relay includes an internal power 
semiconductor mounted to an electrical insulator which in turn is mounted 
to the Solid State Relay’s base plate.  To form an assembly, the SSR with an 
accompanying thermal interface material placed on its base plate is then 
torque mounted to the 

Heat Sink

.

The thermal model representing the above configuration includes the 
following elements:

Selecting a Heat Sink for a given Solid State

Relay application

Crydom offers technical assistance selecting a heat sink for any given SSR 
application through its Applications Engineering Department and on its web 
site.  Available “White Papers” and a selection “tool” to calculate a heat sink 
rating based upon load current and ambient temperature are available at 

www.crydom.com

.

To determine the minimum Heat Sink rating (R

Θ 

hs

) required for a particular 

application, the SSRs internal power dissipation must first be calculated.  
The power developed in the SSR will be the product of the actual load 
current in amps times the SSRs specified on state voltage drop at that 
current ( P

d

 = I

f

 x V

f

). Note: Manufacturers generally specify 'maximum 

forward voltage drop' in their data sheets. Typical voltage drops are often 
much lower.

For this example, assume that a 25 amp AC output SSR is selected to switch 
an AC load current of 18 amps with forward voltage drop specified to be 1.25 
volts.  Therefore the power generated in the SSR is 18 amps times 1.25 volts  
=  22.5 watts.

Next, determine the Solid State Relay’s specified thermal impedance and 
allowed maximum internal temperature (if the max internal temperature is 
not specified by the manufacturer, assume 125 °C as this is a common value 
for many AC power semiconductors). For this example, assume R

Θ 

ssr

 of 0.3 

°C/W and T

j

   of 125 °C.

The next step is to determine the maximum operating ambient temperature 
(T

A

) in °C that the SSR will be expected to operate in its application.  The 

ambient value should be the ambient air temperature of the local 
environment such as the interior of a control cabinet where the SSR and 
Heat Sink are to be mounted.  In this example, assume T

A

 of 55 °C. 

Finally, the thermal impedance of the interface material (R

Θ 

tp

) must be 

determined. These materials will vary from 0.02 to 0.1 °C per watt 
depending upon the type and thickness selected.  For this example, assume 
that the thermal impedance of the selected interface material R

Θ 

tp

 is 0.05 

°C/W.

The first calculation is to determine the temperature span (

∆

t) that the 

SSRs power must be dissipated into in order to maintain its proper 
operation.  This will be the difference between the SSRs maximum allowed 
internal temperature and the local ambient temperature.  

∆

t = T

j

 max – T

A

.   

In this example the result would be:  

∆

t  = 125 – 55  =  70 °C.  

The maximum allowed temperature rise noted above, 

∆

t, must then be less 

than or equal to the combined sum of temperature rises across the three 
impedances times the power being developed in the SSR.  

∆

t  < (R

Θ

 ssr + R

Θ

 tp + R

Θ

 hs) times Pd.  For this example it would be 70 < (0.3 + 0.05 + R

Θ

 

hs) x 22.5.  Therefore the Heat Sink thermal impedance is R

Θ

 hs < (

∆

t /Pd) 

– (R

Θ

 ssr + R

Θ

 tp) or 70/22.5 – 0.35, equaling 2.76 °C/W.

Therefore in this example, a 2.75 °C/W or larger (lower numerical value) 
Heat Sink should be used with the Solid State Relay in the application as 
described above. 

Panel Mount SSR

A

Thermal Interface Material

B

Heat Sink

C

Ambient Air

D

A

B

C

D

R

θSSR

 

T

J

T

B

T

HS2

T

A

T

HS1

T

A

R

θTP

R

θHS

Solid State Relay - Heat Sink Assembly Thermal Model

Heat Sink Selection

The selected SSR with specified thermal impedance (R

Θ

 ssr

), forward 

voltage drop (V

f

), and maximum allowed internal operating temperature 

(T

j

).

The thermal interface material placed between the SSR and the 

Heat 

Sink

 and its specified thermal impedance (R

Θ

 tp

).

The calculated minimum 

Heat Sink 

thermal impedance rating (R

Θ

 hs

) 

required for proper SSR operation.
The operating environment’s max ambient air temperature in °C (T

A

).

D

C

B

A

Heat Sinks

Heat Sinks

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

Heat Sinks

Heat Sinks

For comprehensive mechanical specifications of these and other Crydom products visit

www.crydom.com

5

New

HS351, HS351DR

HS351

HS351DR

3.5°C/W Thermal resistance
Suitable for 1 single or dual SSR
DIN rail or panel mounting

2

1

3

Size w/o Bracket (W x L x H) [in]
Size w/o Bracket (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight w/o DIN Bracket [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

1.78 x 3.20 x 1.78
45.2 x 81.0 x 45.2
44.9/290
Aluminum
Natural Aluminum
.28/128
Two 8x32, 15 to 20/1.7 to 2.2
No

Ground Screw (10-32 x 3/8 in)

DIN Rail Kit 2 (DRK2)

Heat Sink (HS351)

One Hardware Kit 1 (HK1)

1

2

4

3

HS351DR includes

*

4

3.20 [81.0]

1.78 [45.2]

1.78 [45.2]

New

HS301, HS301DR

HS301

HS301DR

3.0°C/W Thermal resistance
Suitable for 1 single or dual SSR
DIN rail or panel mounting

Size w/o Bracket (W x L x H) [in]
Size w/o Bracket (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight w/o DIN Bracket [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

1.78 x 3.20 x 1.58
45.2 x 81.0 x 40.1
59.0/381
Aluminum
Black Anodized
.40/178
Two 8x32, 15 to 20/1.7 to 2.2
Yes/one 40

3

2

1

Ground Screw (10-32 x 3/8 in)

DIN Rail Kit 1 (DRK1)

Heat Sink (HS301)

One Hardware Kit 1 (HK1)

HS301DR includes

*

1

2

4

3

4

1.78 [45.2]

3.20 [81.00]

1.58 [40.1]

New

HS501DR

HS501DR

5.0°C/W Thermal resistance
Suitable for 1 single or dual SSR
DIN rail mounting

Size (W x L x H) [in]
Size (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

1.75 x 3.15 x .60
44.5 x 80.0 x 15.3
19.0/122
Steel
Yellow zinc
.12/52
Two M4, 15 to 20/1.7 to 2.2
No

3.15 [80.0]

1.75 [44.5]

.60 [15.3]

2

1

3

HS501DR includes

*

DIN Mounting Bracket

M4 Mounting Screws

Latch Release

1

2

3

New

HS271, HS271DR

HS271

HS271DR

2.7°C/W Thermal resistance
Suitable for 1 single or dual SSR
DIN rail or panel mounting

Size w/o Bracket (W x L x H) [in]
Size w/o Bracket (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight w/o DIN Bracket [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

1.78 x 3.20 x 2.96
45.2 x 81.0 x 75.2
68.5/442
Aluminum
Natural Aluminum
.45/204
Two 8x32, 15 to 20/1.7 to 2.2
No

2

3

1

HS271DR includes

*

Ground Screw (10-32 x 3/8 in)

DIN Rail Kit 2 (DRK2)

Heat Sink (HS271)

One Hardware Kit 1 (HK1)

1

2

4

3

4

1.78 [45.2]

3.20 [81.0]

2.96 [75.2]

* 

HSxxxDR components are pre-installed at the factory prior to shipment.

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

6

Questions?

Call or e-mail 

+1 (877) 502 5500

 +44 (0) 1202 606030

sales@crydom.com

sales-europe@crydom.com

Americas

Europe

Heat Sinks

Heat Sinks

New

HS172

1.7°C/W Thermal resistance
Suitable for 1 or 2 single or dual SSRs
Panel mounting

Size w/o Brackets (W x L x H) [in]
Size w/o Brackets (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]

***

Accepts fan(s)/qty & size [mm]

*** 

For HS172 heat sink, we recommend the HK1 hardware kit for SSR mounting.

The number of kits required depends upon the number and type of SSRs to be mounted. 

2.31 x 3.95 x 1.51 
58.7 x 100.3 x 38.4
102.2/659
Aluminum
Natural Aluminum
.43/196
Six 8x32, 15 to 20/1.7 to 2.2
No

2.31 [58.7]

3.95 [100.3]

3.36 [85.3]

1.51 [38.4]

New

HS202, HS202DR

HS202

HS202DR

2.0°C/W Thermal resistance
Suitable for 1 or 2 single or dual SSRs
DIN rail or panel mounting available

Size w/o Bracket (W x L x H) [in]
Size w/o Bracket (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight w/o DIN Bracket [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

3.55 x 3.20 x 1.58
90.2 x 81.3 x 40.1
106.7/688
Aluminum
Black Anodized
.70/319
Six 8x32, 15 to 20/1.7 to 2.2
Yes/one or two 40

Ground Screw (10-32 x 3/8 in)

DIN Rail Kit 1 (DRK1)

Heat Sink (HS202)

Two Hardware Kits 1 (HK1)

HS202DR includes

*

1

2

4

3

4

3.55 [90.2]

3.20 [81.3]

1.58 [40.1]

3

1

2

New

HS251

2.5°C/W Thermal resistance
Suitable for 1 single or dual SSR
Panel mounting

Size w/o Brackets (W x L x H) [in]
Size w/o Brackets (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]

**

Accepts fan(s)/qty & size [mm]

**

 HS251 requires a hardware kit (HK1) to mount the SSR.

2.31 x 1.98 x 1.51
58.7 x 50.3 x38.4
52.1/336
Aluminum
Natural Aluminum
.22/99
Two 8x32, 15 to 20/1.7 to 2.2
No

2.31 [58.7]

1.98 [50.3]

1.51 [38.4]

3.36 [85.3]

New

HS201, HS201DR

HS201

HS201DR

2.0°C/W Thermal resistance
Suitable for 1 single or dual SSR
DIN rail or panel mounting available

Size w/o Bracket (W x L x H) [in]
Size w/o Bracket (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight w/o DIN Bracket [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

1.78 x 3.20 x 3.15
45.2 x 81.0 x 80.0
116.3/750
Aluminum
Black Anodized
.71/322
Two 8x32, 15 to 20/1.7 to 2.2
Yes/one 40

HS201DR includes

*

Ground Screw (10-32 x 3/8 in)

DIN Rail Kit 1 (DRK1)

Heat Sink (HS201)

One Hardware Kit 1 (HK1)

1

2

4

3

3.20 [81.0]

1.78 [45.2]

3.15 [80.0]

3

2

1

4

* 

HSxxxDR components are pre-installed at the factory prior to shipment.

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

7

For comprehensive mechanical specifications of these and other Crydom products visit

www.crydom.com

Heat Sinks

Heat Sinks

New

HS122, HS122DR

HS122

HS122DR

1.2°C/W Thermal resistance
Suitable for 1 or 2 single or dual SSRs
DIN rail or panel mounting available

Size w/o Bracket (W x L x H) [in]
Size w/o Bracket (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight w/o DIN Bracket [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

3.54 x 3.20 x 3.15
90.0 x 81.3 x 80.0
210.3/1360
Aluminum
Black Anodized
1.17/532
Six 8x32, 15 to 20/1.7 to 2.2
Yes/one 60

HS122DR includes

*

Ground Screw (10-32 x 3/8 in)

DIN Rail Kit 1 (DRK1)

Heat Sink (HS122)

Two Hardware Kits 1 (HK1)

1

2

4

3

4

3.54 [90.0]

3.20 [81.3]

3.15 [80.0]

1

2

3

HS072

0.7°C/W Thermal resistance
Suitable for 1 or 2 single or dual SSRs
Panel mounting

Size (W x L x H) [in]
Size (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]

***

Accepts fan(s)/qty & size [mm]

*** 

For HS072 heat sinks, we recommend the HK1 hardware kit for SSR mounting.

The number of kits required depends upon the number and type of SSRs to be mounted. 

4.75 x 5.50 x 2.63
120.7 x 149.7 x 66.8
253.6/1640
Aluminum
Natural Aluminum
1.16/526
Six 8x32, 15 to 20/1.7 to 2.2
No

5.50 [149.7]

2.63 [66.8]

1.95 [49.5]

4.75 [120.7]

New

New

HS151, HS151DR

HS151DR

HS151

1.5°C/W Thermal resistance
Suitable for 1 single or dual SSR
DIN rail or panel mounting available

Size w/o Bracket (W x L x H) [in]
Size w/o Bracket (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight w/o DIN Bracket [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

1.78 x 3.20 x 3.74
45.2 x 81.3 x 95.0
138.0/891
Aluminum
Black Anodized
.85/319
Two 8x32, 15 to 20/1.7 to 2.2
Yes/one 40

HS151DR includes

*

Ground Screw (10-32 x 3/8 in)

DIN Rail Kit 1 (DRK1)

Heat Sink (HS151)

One Hardware Kit 1 (HK1)

1

2

4

3

1.78 [45.2]

3.20 [81.3]

3.74 [95.0]

3

2

1

4

New

HS103, HS103DR

HS103

HS103DR

1.0°C/W Thermal resistance
Suitable for 1, 2, or 3 single or
dual SSRs; one 3 Phase SSR
DIN rail or panel mounting available

Size w/o Bracket (W x L x H) [in]
Size w/o Bracket (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight w/o DIN Bracket [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]
Accepts fan(s)/qty & size [mm]

5.20 x 3.00 x 2.37
132.0 x 76.2 x 60.2
227.2/1470
Aluminum
Black Anodized
.97/439
Six 8x32, 15 to 20/1.7 to 2.2
Yes/one or two 40 

HS103DR includes

*

Heat Sink (HS103)

Extruded DIN Rail Bracket

Fasteners

Three Hardware Kits 1 (HK1)

1

2

3

4

3.00 [76.2]

5.20 [132.0]

2.37 [60.2]

1

2

3

4

* 

HSxxxDR components are pre-installed at the factory prior to shipment.

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

8

Questions?

Call or e-mail 

+1 (877) 502 5500

 +44 (0) 1202 606030

sales@crydom.com

sales-europe@crydom.com

Americas

Europe

Accessories

Accessories

New

HS053

0.5°C/W Thermal resistance
Suitable for 1, 2, or 3 single or
dual SSRs; one 3 Phase SSR
Panel mounting

Size (W x L x H) [in]
Size (W x L x H) [mm]
Surface Area [square inches/square cm]
Heat Sink Material
Heat Sink Surface Finish
Weight [lbs/grs]
SSR Mounting Holes, Screw Torque [in lbs/Nm]

***

Accepts fan(s)/qty & size [mm]

*** 

For HS053 heat sink, we recommend the HK1 hardware kit for SSR mounting.

The number of kits required depends upon the number and type of SSRs to be mounted.

6.00 x 6.00 x 3.50
152.4 x 152.4 x 88.9
694.3/4480
Aluminum
Black Anodized
3.14/1423
Six 8x32, 15 to 20/1.7 to 2.2
Yes/one 80

4.90 [124.5]

6.00 [152.4]

6.00 [152.4]

3.50 [88.9]

HK1, HK2

Hardware Kit 1

Part no.: HK1
Bag with 2 SSR mounting screws 8-32 x 3/8.

Hardware Kit 2

Part no.: HK2
Bag with 1 ground screw 10-32 x 3/8 and 2 bracket
screws 6-32 x 1/4.

Hardware Kits

Accessories

HSP1, HSP3, TP01, TP03

Single Phase Heat Transfer Pads

Part no.: HSP1
2.3x1.8 in or 58.4 x 45.7 mm Non-adhesive thermal pad
for single phase and dual panel mount SSRs (25 pack).

Part no.: TP01

TP01

TP03

2.1x1.6 in or 53.3x40.6 mm Thermal pad for single phase
or dual panel mount SSRs. Includes adhesive on one side.

Three Phase Heat Transfer Pads

Part no.: HSP3

Part no.: TP03
3.9x2.8 in or 99.1x71.1 mm Thermal pad for three phase
panel mount SSRs. Includes adhesive on one side.

4.1x2.9 in or 104.1x73.7 mm Thermal pad for three phase
panel mount SSRs.

Thermal Pads

DRK1, DRK2

DIN Rail Bracket Kits

DIN Rail Kit 2

Part no.: DRK2
Weight 0.7lbs/31grs.
Spring, DIN Rail Latch, 22.5mm DIN Rail bracket
and 2 screws 6-32 x 1/4.

DIN Rail Kit 1

Part no.: DRK1
Weight 0.8lbs/34grs.
Spring, Retaining clip, 45mm DIN Rail bracket and
2 screws 6-32 x 1/4.

KS100, KS300

Single Phase SSR Cover

Part no.: KS100
Clear plastic cover for standard single phase SSRs.

Three Phase SSR Cover

Part no.: KS300
Clear plastic cover for three phase SSRs.

KS Covers

Product/Accessories Index

5

HS501DR

5

HS351

5

HS301

5

HS271

6

HS251

6

HS202

6

HS172

7

HS151

7

HS122

7

HS103

7

HS072

8

HS053

6

HS201

Page Part number

HK1

HK2

HSP1

TP01

HSP3

TP03 KS100 KS300

DRK1

TRM6

DRK2

TRM6

Copper wire lug for SSR

Output Terminals

Part no.: TRM6
Accepts AWG 14 to AWG 6 wire size.
Mounts with #8 ,#10, M4 or M5 screws.

Wire Lug Terminal

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

9

For comprehensive mechanical specifications of these and other Crydom products visit

www.crydom.com

Assemblies

Assemblies

How to Select a Solid State Relay/Heat Sink

Assembly from the catalog

Each Assembly carries a maximum load current rating verses ambient 
temperature, line voltage rating and control voltage rating.  There are load 
current ratings available up to 80+ amps AC, line voltage ratings available 
up to 660 VAC and all models are available with DC control voltage.

Selection of the best assembly can be accomplished as follows:

You may choose to go to our website at 

www.crydom.com/en/HSseries 

and use the assembly selection tool available there. The selection tool 
requires the same parameters as noted above to select an SSR/Heat Sink 
Assembly.

Don’t find the combination of ratings

you need?

Crydom markets a broad selection of class leading Solid State Relays.  We 
not only offer the customer the ability to select among a wide range of 
standard panel mount power SSR products, including AC output or DC 
output, random or zero turn on, single, dual or 3 phase SSRs mounted to 
any of our available heat sinks, but we can adapt the design of the Solid State 
Relay and even the 

Heat Sinks

 themselves to precisely meet your 

application requirements.  Consult your local Crydom Representative for 
more information and assistance.

Why Select a SSR/Heat Sink Assembly versus

a Solid State Relay and a Heat Sink?

Assemblies offer the advantage of eliminating the calculations and heat sink 
selection during the design phase of a project, and they eliminate the 
assembly process during the production phase of a project. Thermal 
derating curves for each SSR/Heat Sink combination make the selection of 
the best possible solution significantly easier. The SSRs and Heat Sinks 
arrive fully assembled with thermal interface material and mounting screws 
torqued to the correct values and are “ready to use”.  Optional available DIN 
rail mounting brackets can also be ordered pre-installed on the heat sink, 
further easing mounting.

Selecting a Solid State Relay/Heat Sink

Assembly for an Application

Crydom offers technical assistance selecting a SSR/Heat Sink Assembly for 
any given SSR application through its Applications Engineering Department 
and on its web site.  Available “White Papers” and a selection “tool” to 
determine the optimum SSR/Heat Sink Assembly for an application based 
upon load current & voltage, control voltage and ambient temperature are 
available at 

www.crydom.com/en/HSseries

.

Solid State Relay/Heat Sink
Assembly Selection

Determine what maximum line voltage is required for the application.
Determine the input control voltage required or voltage range available.
Determine the maximum load current and maximum ambient 
temperature that the Assembly is expected to operate in.
Establish the preferred mounting method, panel or DIN rail.
Once the above information is gathered, examine each Assembly’s 
derating chart in the catalog and select models with suitable combined 
rating for the required load current at the required ambient temperature.
From this group of Assemblies, select a model with the correct 
combination of line voltage, control voltage and required mounting.
Order the Crydom SSR/Heat Sink assembly from your preferred Crydom 
Distributor or contact your local Crydom Representative or Regional 
Sales Office for more information or technical assistance.

1
2
3

4
5

6

7

1

2

3

4

DIN Mounting Bracket (HS501DR)
Thermal Pad (TP01)
SSR (See table above for options)
M4 Mounting Screws

Assembly includes

1

3

4

2

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS501DR-D2425

24-280

.04-10

3-32

3.4 @ 5Vdc

48-660

.04-10

3-32

2.0 @ 5Vdc

1
1

HS501DR-HD6025

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

2

4

6

8

10

HS501DR w/25 A single channel SSR

Loa

d C

ur

re

nt

, A

m

ps

HS501DR Assemblies

10 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel output 
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

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

Assemblies

Assemblies

10

Questions?

Call or e-mail 

+1 (877) 502 5500

 +44 (0) 1202 606030

sales@crydom.com

sales-europe@crydom.com

Americas

Europe

HS351DR Assemblies

20 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel output 
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

1

2

3

4

5

6

Ground Screw (10-32 x 3/8 in)
DIN Rail Kit 2 (DRK2)
Heat Sink (HS351)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS351DR-D2425

24-280

.04-20

3-32

3.4 @ 5Vdc

48-660

.04-20

3-32

2.0 @ 5Vdc

1
1

HS351DR-HD6025

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

2

4

6

8

10

12

14

16

18

20

HS351DR w/25 A single channel SSR

Loa

d C

ur

re

nt

, A

m

ps

6

2

1

5

3

4

1

2

3

4

5

6

Ground Screw (10-32 x 3/8 in)
DIN Rail Kit 1 (DRK1)
Heat Sink (HS301)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS301DR-D2425

24-280

.04-24

3-32

3.4 @ 5Vdc

48-660

.04-24

3-32

2.0 @ 5Vdc

1
1

HS301DR-HD6025

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

5

10

15

20

25

30

HS301DR w/25 A single channel SSR

Loa

d C

ur

re

nt

, A

m

ps

HS301DR Assemblies

24 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel output 
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

6

5

3

2

1

4

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

11

For comprehensive mechanical specifications of these and other Crydom products visit

www.crydom.com

Assemblies

Assemblies

HS271DR Assemblies

25 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel output 
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

1

2

3

4

5

6

Ground Screw (10-32 x 3/8 in)
DIN Rail Kit 2 (DRK2)
Heat Sink (HS271)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS271DR-D2425

24-280

.04-25

3-32

3.4 @ 5Vdc

48-660

.04-25

3-32

2.0 @ 5Vdc

1
1

HS271DR-HD6025

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

5

10

15

20

25

HS271DR w/25 A single channel SSR

Loa

d C

ur

re

nt

, A

m

ps

2

6

5

3

1

4

1

2

3

4

Heat Sink (HS251)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS251-D2450

24-280

.04-28

3-32

3.4 @ 5Vdc

48-660

.04-28

3-32

2.0 @ 5Vdc

1
1

HS251-HD6050

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

5

10

15

20

25

30

HS251 w/50 A single channel SSR

Loa

d C

ur

re

nt

, A

m

ps

HS251 Assemblies

28 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel output 
3 to 32 VDC input control voltage
Panel mounted
UL, CSA, VDE, CE approved SSRs

4

3

2

1

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

12

Questions?

Call or e-mail 

+1 (877) 502 5500

 +44 (0) 1202 606030

sales@crydom.com

sales-europe@crydom.com

Americas

Europe

Assemblies

Assemblies

HS202DR Assemblies

35 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel output
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

1

2

3

4

5

6

Ground Screw (10-32 x 3/8 in)
DIN Rail Kit 1 (DRK1)
Heat Sink (HS202)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS202DR-D2450

24-280

.04-35

3-32

3.4 @ 5Vdc

48-660

.04-35

3-32

2.0 @ 5Vdc

1
1

HS202DR-HD6050

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

5

10

15

20

25

30

35

HS202DR w/50 A single channel SSR

Load C

u

rr

e

n

t, A

m

p

s

3

2

1

6

5

4

1

2

3

4

5

6

Ground Screw (10-32 x 3/8 in)
DIN Rail Kit 1 (DRK1)
Heat Sink (HS201)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

6

5

3

1

4

2

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS201DR-D2450

Dual

24-280

.04-35

3-32

3.4 @ 5Vdc

24-280

.04-35

3-32

2.0 @ 5Vdc

1
1

Line
Voltage
Range

Load
Current
Range

*

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

24-280

.15-35

4-32

10 @ 12Vdc

1

HS201DR-HD6050

HS201DR-CC2425W3U

*

 Output current specification is total combined load current for all conducting channels.

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

5

10

15

20

25

30

35

HS201DR w/50 A single channel

or 25 A/channel dual SSR

*

Combined Load 

C

u

rr

e

n

t, A

m

p

s

HS201DR Assemblies

35 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single or Dual channel outputs
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

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

13

For comprehensive mechanical specifications of these and other Crydom products visit

www.crydom.com

Assemblies

Assemblies

HS172 Assemblies

36 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel output 
3 to 32 VDC input control voltage
Panel mounted
UL, CSA, VDE, CE approved SSRs

1

2

3

4

Heat Sink (HS172)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS172-D2450

24-280

.04-36

3-32

3.4 @ 5Vdc

48-660

.04-36

3-32

2.0 @ 5Vdc

1
1

HS172-HD6050

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

5

10

15

20

25

30

35

40

HS172 w/50 A single channel SSR

Load C

u

rr

e

n

t, A

m

p

s

2

1

3

4

1

2

3

4

5

6

Ground Screw (10-32 x 3/8 in)
DIN Rail Kit 1 (DRK1)
Heat Sink (HS151)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS151DR-D2450

Dual

24-280

.04-40

3-32

3.4 @ 5Vdc

48-660

.04-40

3-32

2.0 @ 5Vdc

1
1

Line
Voltage
Range

Load
Current
Range

*

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

24-280

.15-40

4-32

10 @ 12Vdc

1

HS151DR-HD6050

HS151DR-CC2450W3U

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

5

10

15

20

25

30

35

40

HS151DR w/50 A single channel

or 50 A/channel dual SSR

*

C

o

m

b

in

e

d

 Load 

C

u

rr

e

n

t, A

m

p

s

HS151DR Assemblies

40 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single or Dual channel outputs
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

6

5

4

3

2

1

*

 Output current specification is total combined load current for all conducting channels.

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

14

Questions?

Call or e-mail 

+1 (877) 502 5500

 +44 (0) 1202 606030

sales@crydom.com

sales-europe@crydom.com

Americas

Europe

Assemblies

Assemblies

HS122DR Assemblies

45 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single or Dual channel outputs
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

1

2

3

4

5

6

Ground Screw (10-32 x 3/8 in)
DIN Rail Kit 1 (DRK1)
Heat Sink (HS122)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS122DR-D2450

Dual

24-280

.04-45

3-32

3.4 @ 5Vdc

48-660

.04-45

3-32

2.0 @ 5Vdc

1
1

Line
Voltage
Range

Load
Current
Range

*

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

24-280

.15-45

4-32

10 @ 12Vdc

1

HS122DR-HD6050

HS122DR-CC2450W3U

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

5

10

15

20

25

30

35

40

45

HS122DR w/50 A single channel

or 50 A/channel dual SSR

C

o

m

b

in

e

d

 Load 

C

u

rr

e

n

t, A

m

p

s

3

2

1

*

 Output current specification is total combined load current for all conducting channels.

1

2

3

4

5

6

Fasteners
Extruded DIN Rail Bracket
Heat Sink (HS103)
Thermal Pad (TP01/TP03)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS103DR-D2490

24-280

.04-55

3-32

3.4 @ 5Vdc

48-660

.04-55

3-32

2.0 @ 5Vdc

1
1

HS103DR-HD6090

3 Phase

Line
Voltage
Range

Load
Current
Range

*

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

48-530

.05-55

3-32

10 @ 5Vdc

1

HS103DR-D53TP25D

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

10

20

30

40

50

60

HS103DR w/90 A single channel

or 25 A/channel 3 Phase SSR

*

C

o

m

b

in

e

d

 Load 

C

u

rr

e

n

t, A

m

p

s

HS103DR Assemblies

55 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel or 3 phase outputs
3 to 32 VDC input control voltage
DIN Rail mounted
UL, CSA, VDE, CE approved SSRs

3

1

2

4

6

5

*

 Output current specification is total combined load current for all conducting channels.

6

5

4

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

15

For comprehensive mechanical specifications of these and other Crydom products visit

www.crydom.com

Assemblies

Assemblies

1

2

3

4

Heat Sink (HS053)
Thermal Pad (TP01/TP03)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS053-D24125

24-280

.15-82.5

3-32

3.4 @ 5Vdc

48-660

.15-82.5

3-32

2.0 @ 5Vdc

1
1

HS053-HD60125

3 Phase

Line
Voltage
Range

Load
Current
Range

*

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

48-530

.05-82.5

3-32

10 @ 5Vdc

1

HS053-D53TP50D

*

 Output current specification is total combined load current for all conducting channels.

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

20

40

60

80

100

HS053 w/125 A single channel
or 50 A/channel 3 Phase SSR

*

C

o

m

b

in

e

d

 Load 

C

u

rr

e

n

t, A

m

p

s

HS053 Assemblies

82.5 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel or 3 phase outputs
3 to 32 VDC input control voltage
Panel mounted
UL, CSA, VDE, CE approved SSRs

4

3

2

1

HS072 Assemblies

65 Amp AC output @ 40 °C
24 to 280 or 48 to 660 VAC line
voltage range
Single channel output 
3 to 32 VDC input control voltage
Panel mounted
UL, CSA, VDE, CE approved SSRs

1

2

3

4

Heat Sink (HS072)
Thermal Pad (TP01)
SSR (See table above for options)
Hardware Kit 1 (HK1)

Assembly includes

Line
Voltage
Range

Load
Current
Range

Control
Voltage
Range

Control
Current

Included
SSRs

Vrms

Arms

Vdc

mA

HS072-D2490

24-280

.04-65

3-32

3.4 @ 5Vdc

48-660

.04-65

3-32

2.0 @ 5Vdc

1
1

HS072-HD6090

Derating Curve

Ambient Temperature, °C

20

30

40

50

60

70

80

0

10

20

30

40

50

60

70

HS072 w/90 A single channel SSR

Load

 C

u

rr

e

n

t, A

m

p

s

2

3

4

1

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

© 2009 Crydom Inc., All Rights Reserved.

07/2009

Specifications are subject to change without prior notice.
Crydom and the Crydom logo are registered trademarks
of Crydom Inc.

Distributed by :

Across the Globe

 AMERICAS

USA & CANADA

Crydom Inc

2320 Paseo de las Americas,
Suite 201
San Diego CA 92154 

sales@crydom.com

support@crydom.com

Sales Support

Sales Support

Tel.: +1 (877) 502 5500

Tech Support

Tel.: +1 (877) 702 7700

tech-europe@crydom.com

Tech Support

Fax: +1 (619) 710 8540

ASIA
PACIFIC

CHINA & HONG KONG

Custom Sensors &
Technologies Asia
(Shanghai) Ltd.

2 Floor, Innovation Building,
No.1009, Yi Shan Road,
Shanghai, 200233
Tel.: +86 (21) 2401 7766
Fax: +86 (21) 6249 0701
sales-cn@crydom.com

EUROPE 
MIDDLE EAST 
AFRICA

Crydom SSR Ltd

Arena Business Centre
Holyrood, Close
Poole, Dorset BH17 7FJ

Tel.: +44 (0) 1202 606030
Fax: +44 (0) 1202 606035
sales-europe@crydom.com

CST Latinoamerica

SOUTHERN AND

CENTRAL AMERICAN

COUNTRIES

INDIA

SOUTH KOREA

CST Sensors India Pvt Ltd 

Unit 1301 and 1302 Prestige
Meridian II 
30 M.G.Road,
Bangalore - 560001
INDIA
Tel.: +91 (80) 4113 2204/05
Fax: +91 (80) 4113 2206
india@cstsensors.com

OTHER ASIAN AND  

PACIFIC COUNTRIES

AUSTRIA & SWITZERLAND

BELGIUM

Tel.: +32 (0) 2 460 4413
Fax:

Tel.:
Fax:

+32 (0) 2 461 2614

sales-europe@crydom.com

UNITED KINGDOM

FRANCE

sales-europe@crydom.com

Tel.: +44 (0) 1202 606030
Fax: +44 (0) 1202 606035
vertrieb@crydom.com

GERMANY

Tel.: +49 (0) 180 3000 506
Fax: +49 (0) 180 3205 227
vertrieb@crydom.com

ITALY

Tel.: +39 (0) 2 665 99 260
Fax: +39 (0) 2 665 99 268
sales-europe@crydom.com

THE NETHERLANDS

Tel.: +31 (0) 71 582 0068
Fax: +31 (0) 71 542 1648
sales-europe@crydom.com

SPAIN

Tel.: +34 902 876 217
Fax: +34 902 876 219
sales-europe@crydom.com

MIDDLE EAST, 

AFRICA AND OTHER

EUROPEAN COUNTRIES

Tel.: +44 (0) 1202 606030
Fax: +44 (0) 1202 606035
sales-europe@crydom.com

+33 (0) 810 123 963
+33 (0) 810 057 605

Custom Sensors &
Technologies

3F, No. 39, Ji-Hu Road
Nei-Hu Dist.
Taipei 114, Taiwan 
Tel.:
Fax:

+886 2 8751 6388
+886 2 2657 8725

eap@cstsensors.com

TAIWAN

Custom Sensors &
Technologies

3F, No. 39, Ji-Hu Road
Nei-Hu Dist.
Taipei 114, Taiwan
Tel.: +886 2 8751 6388
Fax: +886 2 2657 8725
taiwan@cstsensors.com

MEXICO

Automatismo Crouzet
S.A. de C.V.

Calzada Zavaleta 2505 - C
Col Sta Cruz Buenavista  
C.P. 72150 - Puebla 
MEXICO
Tel.: +52 (222) 409 7000
Fax: +52 (222) 409 7810
01 800 087 6333

Custom Sensors &
Technologies

5F, Jeil Bldg.,
94-46 Youngdeungpo-dong 7-ga
Youngdeungpo-gu,
Seoul, 150-037
South Korea
Tel.: +82 2 2629 8312
Fax: +82 2 2629 8310
korea@cstsensors.com

BRASIL

info@cst-latinoamerica.com

sales-mx@crydom.com

Alameda Rio Negro, 1.084-cj.A31
Centro Empresarial de Alphaville
CEP: 06454-000 
Barueri - SP

Tel.: +55 (11) 4191 9797
Fax: +55 (11) 4191 9136

CAT/CR/HS/EN

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