... which current is under 400A. Take protect effect when mousecage motor's non-frequent start, breaking off working and protecting ... According to use of MCCB: Distribution circuit protection type, motor protection type; 3, According to connection way: Front panel connection, back panel ... and opening withthe other three poles. Main specification: Pole No.: 3 pole, 4 pole Rated Working current (A): 12.5, ...