HEAVY DUTY TYPE; 22.94 INCH W X 8.34 INCH D X 50.88 INCH H SIZE; 4 WIRE(S); UL 98, CSA APPROVAL; NEMA 1 ENCLOSURE; 600 AMPERE CURRENT RATING; 75 HP AT 240 VAC 3-PHASE (NEC STANDARD), 200 HP AT 240 VAC 3-PHASE (TIME DELAY), 50 HP AT 250 VDC POWER RATING