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About product and suppliers:
        Alibaba.com offers 226 30 amp transfer switch products. About 46% of these are other switches, 1% are generator parts & accessories, and 1% are rotary switches. 

A wide variety of 30 amp transfer switch options are available to you, such as residual current, mini, and window lifter switch. You can also choose from dual, ac three phase, and single. As well as from >500w, 1 - 200kw, and 1 - 50w. And whether 30 amp transfer switch is 2, or 1. 

There are 225 30 amp transfer switch suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Australia, which supply 97%, 1%, and 1% of 30 amp transfer switch respectively. 

0 amp transfer switch products are most popular in Mid East, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 58 with ISO9001, 40 with Other, and 8 with ISO14001 certification.