MC 1 pole 230v ac mcb electrical is mainly used in AC50/60Hz single pole 230V or two,three,four pole 400V voltage for overload and short-circuit protection as well as for infrequent on-and-off switching electric equipment and lighting circuit under normal conditional the product is suitable for industry,business,building,ressidence,etc. It's conformity with GB10963,IEC60898 standards.