I have a 120 VAC 1 hp motor that I want to control with a solid state relay because they are sealed. Looking at solid state relays with 3 to

32 VDC control voltage I found a couple that might work. 1 is rated 240 VAC 25 amps. The other is rated 240 VAC, 40 amps, and is zero crossing. And twice as much as the 25 amp model. Since the load is an AC induction motor does the zero crossing relay need to be used? Is either relay appropriate? Will these relays rated at 240 volts be OK switching 120 volts as long as the amperage is within spec?Here's a link to the relays:- posted
17 years ago