... , 2.the range of ampere is 40A to 100A,the break capacity is 10KA and 20KA.have 1P,2P,3P,4P ... circuit breaker is used for AC 50Hz or 60Hz,single pole 240V,2,3,4 poles 415V for protecting the circuit ... motor distribution system.Meantime,it is applicable to an unfrequent switch over the electric apparatus and lighting circuit under normal condition ...