The Schneider Electric MGN60863 is a PowerPact M-Frame molded case circuit breaker (MCCB) from the PowerPact M series . It is a 3-pole (3P) circuit breaker with a rated current of 600 A . This unit-mount version features an electronic trip unit (typically Micrologic) providing advanced protection functions including long-time, short-time, instantaneous, and ground-fault protection (LSIG)