(1) It must be installed vertically on the control panel or switch board, and the handle should be facing up when the switch is closed. Flip or paperback is not allowed to prevent accidental closing accidents. (2) When used for controlling lighting or electric heating load. The fuse should be attached for short circuit and overload protection. When wiring, the power inlet should be connected to the inlet of one side of the static contact, and the load should be connected to the outlet of one side of the moving contact. After the switch is disconnected, the knife and the melt will not be charged. When used as a control switch for the motor, the melt portion of the switch should be directly connected with a copper wire, and a fuse should be additionally installed at the outlet end for short-circuit protection. (3) When replacing the melt, it must be replaced according to the original specifications with the knife disconnected. (4) When opening and closing operations, it should act quickly to extinguish the arc as soon as possible.
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