Molded Case Circuit Breaker 400 A Amps AC Voltage Rating 240V AC Max AIR Rating 25kA at 120/240V AC For Use With Busway Plug-In Units Combination Starters Industrial Enclosures Motor Control Centers Panelboards Switchboards Series Q4 High Amp Trip Setting 4 000 A Low Amp Trip Setting 2 000 A Circuit Breaker Type Standard Number of Poles 2 DC Voltage Rating Not Rated Terminal Connection Lug Trip Type Thermal Magnetic Phase Single Instantaneous Trip Adjustable