Replacement for relays when using 2 to 3 compressors.
Rated for up to 80 Amps, CONTINUOUS DUTY. Some people try using starter solenoids for their compressors- don't do that! Starter solenoids are only rated for momentary use, and they'll burn out or stick when used on a compressor circuit. Plus, at only 15 bucks these are around the same price anyway!