Solid state relays and solid state relay heat sinks

1-90 amp solid state relays
up to 277 volts or 600 volts AC switching
Individual solid state relay hockey pucks or pre-assembled onto heat sinks

  • Fourth generation Maximum Surge Survival Technology™ for superior performance
  • Internal, SCR thyristors and fourth generation DCB Direct Copper Bonding thermal optimization provide longer life than other solid state relays
  • Optically isolated for 4000 volt isolation
  • International green LED input status indicator and terminal numbers (L1, T1, A1, A2)
  • Clear safety cover included
  • 800 volt blocking voltage in the 3V models (very high voltage surge blocking)
  • 1600 volt blocking voltage in the 6V models (highest voltage surge blocking)
  • Ultra-Precise zero voltage turn-on to eliminate EMI noise, without the need for CE filters
  • Engineered internal snubber circuit for robust performance
  • RoHS compliant.
  • CE EN 60947-4-3 (the newest and most difficult international CE specification).
  • UL
  • Note: the power terminals on "hockey puck" solid state relays are rated for a maximum of one or two 8 AWG, stripped, wires. For larger wire installations, please visit the C Family of products. See the data bulletins for complete specifications: for the new C Family DC control input models or AC control input models.
  • Made in the USA.

 solid state relay
solid state relays
solid state relays heatsink
On a HEATSK-DIN-2.0		 solid state relay heat sink
On a HEATSK-DIN-1.0U		 heat sink for SSR
Two on a Ultra Power Cooler with fan		 dual solid state relay heat sink
Triple on a Ultra Power Cooler with fan		 triple solid state relay heat sink
Triple on a UPC with fan
Part Numbers: Pre-installed* on:
  Good
Heat Sink		 Better
Heat Sink
DC Control Input: SSR
only		 Heatsk-
Din-2.0		 Heatsk-
Din-1.0U
HDA-3V25E   up to 25A, 24-277 VAC max, 3-32 VDC activated Buy Buy  
HDA-3V50E   up to 50A, 24-277 VAC max, 3-32 VDC activated Buy Buy Buy
HDA-3V90E   up to 90A, 24-277 VAC max, 4-32 VDC activated Buy   Buy
HDA-6V50E   up to 50A, 24-600 VAC max, 4-32 VDC activated Buy Buy Buy
HDA-6V90E   up to 90A, 24-600 VAC max, 4-32 VDC activated Buy   Buy
AC Control Input:      
HAA-3V25E   up to 25A, 24-277 VAC max, 90-264 VAC activated Buy Buy  
HAA-3V50E   up to 50A, 24-277 VAC max, 90-264 VAC activated Buy Buy Buy
HAA-3V90E   up to 90A, 24-277 VAC max, 90-264 VAC activated Buy   Buy
HAA-6V50E   up to 50A, 24-600 VAC max, 90-264 VAC activated Buy Buy Buy
HAA-6V90E   up to 90A, 24-600 VAC max, 90-264 VAC activated Buy   Buy
* Pre-installed = Solid state relay + thermal transfer pad or thermal grease + 2 mounting screws + torqued to 20-25 inch pounds + the heat sink shown. For the fastest on site installations, using the pre-assembled packages is beneficial. Power-io can design other assemblies, contact us with your specifications. The Ultra Power Cooler™ is a small footprint, thermally engineered, fan assisted heat sink. Please provide 120 vac, 9 watts, power for the fan.

Purchase heat sinks, thermal pads, pre-installation options separately:    Parts page
Heat sink descriptions, multi-zone heat sinks, MOV options, and more.