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About product and suppliers:
        Alibaba.com offers 1,127 3 phase mcb products. About 74% of these are circuit breakers, 1% are electrical plugs & sockets. 

A wide variety of 3 phase mcb options are available to you, such as mini, air, and earth leakage. You can also choose from 3, 4, and 1. As well as from free samples, paid samples. 

There are 1,131 3 phase mcb suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 99%, 1%, and 1% of 3 phase mcb respectively. 

 phase mcb products are most popular in Southeast Asia, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 1,127 with Other, 432 with ISO9001, and 153 with ISO14001 certification.