... non-frequent start, breaking off working and protecting overload, short circuit and lacking voltage. The product confirms to GB14048.2, IEC60947 ... or harizontal installation. 2, According to use of MCCB: Distribution circuit protection type, motor protection type; 3, According to connection way ... poles (N poles) of four poles MCCB has for types: 8, Type A: No overload release on N pole, which is ...