Three-phase coupler is a major breakthrough in the design. Now apply a common coupler device. All coupler impact-resistant, UV resistant construction. Coupler and plug-compatible accessories, such as 56P, 56PA and 56A1 electrical plug sockets when used together, protection class IP66. IP66 rated protection device with a hose cap, the protective cap on the hose attachment is not used for the international protection rating.
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