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Solid State Relay/Heat Sink
AssemblySelection
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
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
the best possible solution significantly easier. The SSRs and Heat Sinks
Line
Load
Control
arrive fully assembled with thermal interface material and mounting screws
torqued to the correct values and are “ready to use”. Optional available DIN
Included
SSRs
Voltage
Range
Vrms
Current
Range
Arms
Voltage
Range
Vdc
Control
Current
mA
rail mounting brackets can also be ordered pre-installed on the heat sink,
further easing mounting.
HS501DR-D2425
HS501DR-HD6025
1
1
24-280
48-660
.04-10
.04-10
3-32
3-32
3.4 @ 5Vdc
2.0 @ 5Vdc
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 .
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:
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3
1
2
3
4
5
6
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
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Assembly includes
2
7
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
DIN Mounting Bracket (HS501DR)
Thermal Pad (TP01)
SSR (See table above for options)
M4 Mounting Screws
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
Derating Curve
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8
6
4
2
HS501DR w/25 A single channel SSR
Relay and even the Heat Sinks themselves to precisely meet your
application requirements. Consult your local Crydom Representative for
0
20
30
40
50
60
70
80
more information and assistance.
Ambient Temperature, °C
For comprehensive mechanical specifications of these and other Crydom products visit www.crydom.com
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