Solid State Relay Heatsinks

Solid state relay heatsinks are devices that provide solid state relays with a means of dissipating heat and maintaining safe operating temperatures. All solid state relays generate heat and failure to manage this can result in the relay's failure or destruction.

What are solid state relay heatsinks made from?

Solid state relay heatsinks are made of high thermal conductive materials such as silver, gold, copper or aluminium. Aluminium is commonly used for its availability and low cost, typically with a black anodized finish to provide additional radiant heating dissipation. The heatsink is firmly attached to the solid state relay.

How do solid state relay heatsinks work?

Heatsinks have vertical fins through which hot air flows, normally assisted by a fan. The fins provide a large surface area that cools the air. Once cooled, the air is expelled into the environment, so ventilation is crucial. A heatsink's performance is measured by its thermal impedance (resistance to the transfer of thermal energy). A lower numerical thermal impedance rating means more efficient heat transfer.

When choosing solid state relay heatsinks you should bear in mind coordinating size, form factor, thermal impedance rating and mounting.


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Description Price Accessory Type For Use With Series Mounting Type
RS Stock No. 903-2955
Mfr. Part No.KHS-1BD
Brandi-Autoc
SGD22.50
Each
units
Heatsink Single Phase SSR - DIN Rail
RS Stock No. 922-5239
BrandRS PRO
SGD133.23
Each
units
Heatsink WG Series Solid State Relays - Snap-On Rail Mount
RS Stock No. 922-2127
Mfr. Part No.SSRHP25
SGD39.18
Each
units
Heatsink Panel Mount Solid State Relay - Panel Mount
RS Stock No. 703-4558
Mfr. Part No.HS072
SGD70.06
Each
units
Heatsink 1 or 2 single or dual SSR - Panel Mount
RS Stock No. 922-5249
BrandRS PRO
SGD10.59
Each
units
Thermal Pad WG Series Solid State Relays - -
RS Stock No. 903-2952
Mfr. Part No.KHS-150A
Brandi-Autoc
SGD57.05
Each
units
Heatsink Single Phase SSR, Two Phase SSR - Panel Mount
RS Stock No. 703-4552
Mfr. Part No.HS053
SGD179.75
Each
units
Heatsink 1, 1 x 3 phase SSR, 2 or 3 single or dual SSR - Panel Mount
RS Stock No. 703-4561
Mfr. Part No.HS501DR
SGD27.56
Each
units
Heatsink 1 x single or dual SSR - DIN Rail
RS Stock No. 701-8834
Mfr. Part No.HS103DR
SGD130.77
Each
units
Heatsink - - DIN Rail
RS Stock No. 701-8856
Mfr. Part No.HS201DR
SGD49.98
Each
units
Heatsink - - DIN Rail
RS Stock No. 917-4863
Mfr. Part No.WF031100
BrandCelduc
SGD319.89
Each
units
Heatsink SP/3P Solid Sate Relay - DIN Rail
RS Stock No. 703-4570
Mfr. Part No.HS122DR
SGD68.20
Each
units
Heatsink 1 or 2 single or dual SSR - DIN Rail
New
RS Stock No. 215-1658
Mfr. Part No.Y92B-N100
BrandOmron
SGD69.41
Each
units
Heatsink G3NA-220/420B SSR Y92B Surface Mount
RS Stock No. 922-5236
BrandRS PRO
SGD92.23
Each
units
Heatsink WG Series Solid State Relays - Snap-On Rail Mount
RS Stock No. 775-3170
Mfr. Part No.RHS37A
SGD27.12
Each
units
Heatsink RGS Series - DIN Rail
RS Stock No. 171-9092
Mfr. Part No.WF121000
BrandCelduc
SGD81.55
Each
units
Heatsink SC Series, SG Series, SGT Series, SO Series, SVT Series - Chassis, DIN Rail
RS Stock No. 903-2958
Mfr. Part No.KHS-150C
Brandi-Autoc
SGD48.69
Each
units
Heatsink Single Phase SSR, Two Phase SSR - Panel Mount
RS Stock No. 703-4546
Mfr. Part No.HS202
SGD42.31
Each
units
Heatsink - - Panel Mount
RS Stock No. 922-2111
Mfr. Part No.SSRHP05
SGD103.69
Each
units
Heatsink Panel Mount Solid State Relay - Panel Mount
RS Stock No. 123-3855
Mfr. Part No.HS259DR-RSC1
SGD43.80
Each
units
Heatsink NOVA22 Panel Mount SSR, NOVA22 SSRs - DIN Rail