... or two, three, four-poles 400Vcircuit for overload and short-circuit protection as well as for unfrequent on-and-off switching electric ... under normal condition. It can be used in lighting and electric motor distribution system. It is characterized with novel structure ,light ... current: 1A, 2A, 3A, 4A, 5A, 6A, 10A, 16A, 20A, 25A,32A, 40A, 50A, 63A. 2. No. of pole: 1p, 2p, 3p ...