This universal pressure switch replaces pressure switches on compressors with up to 2 HPat120v 1 phase, 3 HP at240 V 1 phase or 5 HP at240 V 3 phase. 3 HP at 240V 1 phase. Offers a pressure range of 95-125 PSI. Combination terminals can be used with either quick connects or standard screw terminals. With four 1/4" FNPT ports complete with plugs, this pressure switch includes and auto off disconnect lever and rotating unloader for applications requiring these modifications. UL listed, CSA certified.