I have a couple questions about relay selection (mechanical and solid state) to be used to switch power to a 2hp 120V single phase induction motor. The motor is in a dust collection system for a woodworking shop. Don't know what the starting current would be on the system, only the HP rating of the motor (haven't bought the dust collector yet). Looking at the ratings for motor loads, I see contactors rated at 2hp at240V while they are only rated for 1/2hp to 1hp at 120V. Would it be acceptable to parallel both sets of contacts on a DPST contactor to safely handle the 2hp motor?
About using a SSR... Looking at an Opto22 model 120D45, rated for 45A at120V; would this be an appropriate SSR to switch power to the motor? It's a zero-cross SSR, and has an internal snubber for its rated current at 0.5 PF. The datasheet is at
Thanks for advice