Low voltage combination switch Mining explosion-proof and Intrinsically Safe Low-voltage Vacuum Combination Switch (hereinafter referred to as combination switch) is used in coal mines containing explosive gas and coal dust. It can logically control and protect the start-up or stop of 4 sets of three- phase squirrel-cage asynchronous motors under rated voltage 1140V (660V), AC 50Hz, and can change the phase sequence when the motor stops. The switch is especially applied to centralize monitoring of mining, transportation and other kinds of working faces with centralized dynamic loads. The switch has advantages like high automation level, convenient and intuitive man-machine dialogue, easy to networking, stable performance, sensitive protect, reliable operations, etc. It is a perfect upgrade product for mine digitization. Wantai founded in 1998, now the net worth is 430 million yuan, focused on the research and development, production and sales of the Mining Explosion-Proof Equipment , High Voltage Combination Switchgear, and Miner' s Lamp is also our main underground products.
