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NSPV 2P/4P/6P/8P Solar DC21B Isolator Switch Features: TUV certified; Assemble conveniently; All wiring operations are not in the same direction to improve tool usage, reduce occupied space for product, and more convenient to replace and maintain. Description: This isolator switch is used in solar photovoltaic system, the voltage can reach 1500VDC; the mechanism of the switch move fast, breaking the contact quickly; the category is DC21B.