Solid state relay, ssr, and scr relays.


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 relays heatsink

On a HEATSK-DIN-2.0

solid state relay heat sink

On a HEATSK-DIN-1.0U

heat sink for SSR

On a HEATSK-DIN-0.6D

dual solid state relay heat sink

Dual on a HEATSK-DIN-0.6D

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
HDA-3V50E up to 50A, 24-277 VAC max, 3-32 VDC activated
HDA-3V90E up to 90A, 24-277 VAC max, 4-32 VDC activated
HDA-6V50E up to 50A, 24-600 VAC max, 4-32 VDC activated
HDA-6V90E up to 90A, 24-600 VAC max, 4-32 VDC activated
AC Control Input:
HAA-3V25E up to 25A, 24-277 VAC max, 90-264 VAC activated
HAA-3V50E up to 50A, 24-277 VAC max, 90-264 VAC activated
HAA-3V90E up to 90A, 24-277 VAC max, 90-264 VAC activated
HAA-6V50E up to 50A, 24-600 VAC max, 90-264 VAC activated
HAA-6V90E up to 90A, 24-600 VAC max, 90-264 VAC activated
* 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.

For a printable copy of the data bulletin including the complete, in-depth product specifications, engineering details, and thermal calculations: solid state relay data bulletin, or heat sinks.
For a zoomed in photo of the product: Solid state relay and the solid state relay cover
It is important to anticipate three installation conditions: avoid over-amperage, over-voltage (surges), or over-temperature. See: solid-state-relay-extended-life.htm