Solid State Relay to Switch Transformer?

**Robin Hewitt** · 07-09-2008

I use a 25A Crydom SSR to switch on the 2HP motor on my mill, got fed up with it pulling the RCB and killing the PC driving the steppers. It really has been a fit and forget solution, never given me a moments worry.

I liked it so much I used a small potted SSR to switch a transformer output on to a bridge for the DC suds pump.

I'd never willingly use a mechanical relay to switch AC again :D

**m_c** · 08-09-2008

Originally Posted by Kip

I'm with you there Robin! Way too noisy :yes:

I dunno. I find it reassuring hearing a relay clicking, although I do cringe when my phase converter start-up relay chatters when a big load gets switched on.

Originally Posted by Robin Hewitt

If you want to make your own, Google for the MOC3040

I'll keep that info handy for future use, but at the moment, I'll stick to buying something that should work how it's supposed to!