Three Phase AC SSR for 1 HP Motor
I need to build a three phase AC(in 120V)-AC(out 440V) solid state relay to turn on or off a small(1hp) three phase AC motor. Do you have any idea?
Can I use three MOC3043 and three TIC236E triacs of course with all opto LEDs in series?
Mail from FJP
See my SSR Circuits , Solid State Relays or SSR Choose a DC Control and AC Load SSR, That is what you seem to indicate.
1 hp = 745.699872 watts
Let triac have 10 A and 600V AC ratings, BTA12600 But now BTA12600 is obsolete, adapt to what is available in your country.
MOC3043 is fine, isolation must be good, take care. Use a Heatsink.
ON-OFF Control inputs can be parallel not series.
Here is a picture of a Solid State Contacter from Power IO
On this page you can see a 3 phase SSR i built. Three-Phase-SSR.