Molded Case Circuit Breaker, 250 A Amps, AC Voltage Rating 600V AC, Max. AIR Rating 100kA at 240V AC, For Use With -, Series JJ, High Amp Trip Setting 2,500 A, Low Amp Trip Setting 684 A, Circuit Breaker Type Motor Circuit Protector, Number of Poles 3, DC Voltage Rating 250V DC, Terminal Connection Line/Load Lug, Trip Type Thermal Magnetic, Phase Three, Instantaneous Trip Instantaneous, Phase Connection ABC, Frame Size 250A/JJ, Circuit Breaker Mounting Style Free Standing, Height 7.52 in Square D motor circuit protectors are rated up to 75A and 347VAC and interrupt excessive current flows to protect motor control centers from short circuits. They can be used with NEMA and IEC motor starters, overload relays, and contactors to offer more circuit protection. Their current-carrying parts, mec.