SQUARE D MASTERPACT INSULATED CIRCUIT BREAKER 3000 AMPS 3 POLES 3000 AMPS WITH TRIP UNIT STR28D AND AUXILIARY SWITCH 10A/480 VAC 6A/600VAC 3A/250VDC, SHUNT TRIP 24 VDC CLOSING RELEASE 110/127 VAC, READY TO CLOSE SWITCH PF, MOTOR AND CHARGED SWITCH 100/127 VAC CAT# MP30H1