SSR-25AA Solid State Relay AC to AC (Input 80-250V AC Output 24-380V AC) with Heat Sink, 25A

Exactly as advertised. Shipped fast enough, packaged well enough and works fine.I used this to run my well pump using a 110V trigger from an electronic pressure switch unit. I wanted to use this to power the well pump as it will be more bullet proof on the amperage running the well pump, though the well pump is only at 4.5 amps. If you have a heavy amp draw you might consider adding a little computer fan to the heat sink and make it more bullet proof to heat. Good little unit, good price and very handy.

Easy to installWorking great

I'm using it for an HVAC booster fan. I used an AC circuit off my Carrier furnace meant for an air purifier to trigger the relay. Don't even consider using the circuit directly you may blow a very expensive control board.

This unit was purchased to control a 20 amp rated heater which doesn't really draw that much. Even though it was being operated below its stated current rating with the heatsink in place, this unit failed after a couple of months. Failure mode was severe overheating resulting in the unit going up in flames. Fortunately circuit breakers tripped before any damage occurred. If you must have a solid state relay, I recommend getting one with a current rating much higher (at least 50%) than your requirements. Better yet, for such high current requirements, there are actual physical relay units available that should be more reliable.

The relay worked as per designed. I am using it for a heater control. Works perfectly!

Good switch. Works like a charm . Fixed my pellet stove with it

Easy installation. The relay in the thermostat makes more sound than the SSR-25AA

This relay bleeds current badly. There is a reason for the heat sink. Would not work at all in my application. I went to an electro-mechanical relay, and everything is working well and staying cool.

Output doesn’t switch, dead on arrivalCan’t recommend