... MCCB: Distribution circuit protection type, motor protection type; 3, According to connection way: Front panel connection, ... MCCB has for types: 8, Type A: No overload release on N pole, which is making at ... the other three poles. 9, Type B: No overload release on N pole, which closing and ... opening withthe other three poles. Main specification: Pole No.: 3 pole, 4 pole Rated Working current (A): 12 ...