HEAVY DUTY TYPE; 22.94 INCH W X 8.34 INCH D X 50.88 INCH H SIZE; 3 WIRE(S); UL 98, CSA APPROVAL; NEMA 1 ENCLOSURE; 400 AMPERE CURRENT RATING; 50 HP AT 240 VAC 3-PHASE (NEC STANDARD), 125 HP AT 240 VAC 3-PHASE (TIME DELAY), 50 HP AT 250 VDC POWER RATING