vacuum feeding switch
explosion-proof switch
explosion -proof vacuum feeding switch
mine explosionproof vacuum feeding switch

Applications

the feeding switch is sutiable for main distribution switch or branch switch in the three phase AC grid with insulatd neutral,with the frequency of 50Hz,voltage of 660v or 1140v and current of 630A under the coal mine well or in the enviroment of surrounding mediacontaing explosive gases mixture.

Features

1. it can provide protection in such cases of  overload,short circuit, overload,three-phase imblance(including phase failure)

leakage lockout and undervoltage etc.

2.the feeding switch is suitable for connction with the remote shunt excitation button as well as the methane circuit-breaker and other inner controlling joints,to provide protection in case of  cut-off for excessive methane and other problems.

3.the electronic protectors is suitable  adjust its rated  working current according to the charge capacitance,to effectively protect the charge and circuit ,besides,it has the function of self-inspectrion.