GENERAL DUTY TYPE; 21.63 INCH W X 8.7 INCH D X 49.44 INCH H SIZE; 4 WIRE(S); UL 98, CSA APPROVAL; NEMA 1 ENCLOSURE; 400 AMPERE CURRENT RATING; 50 HP AT 240 VAC 3-PHASE (NEC STANDARD), 100 HP AT 240 VAC 3-PHASE (TIME DELAY) POWER RATING; 3 POLE(S)