Home >  Products > Explosion-proof products > For Mining > KBZ9-400(200)/1140(660)


  • 1. Function
    This mine explosion-proof type vacuum feeder switch is mainly used as main switch or
    branch switch in AC 50Hz power distribution system of indirect neutral-point earthing with
    voltage of 1140V or 660V and current of 400A or 200A in underground coal mines with
    explosive and dangerous gas(methane) and coal dust and it is also used for non-frequent
    start of big capacity motor .

    2. Model

    3. Characteristics
    3.1 Real-time English setting, easy parameter setting
    3.2 With built-in working power supply , allowing parameter setting without power
    3.3 Multiple protective functions for overload, short circuit, loss of phase, leakage lockout,
    selective leakage(branch switch), over-voltage, under-voltage etc.
    3.4 Function of fan and power supply lockout, gas lockout and manual closing lockout in
    fault state

  • 4. T echnical Parameter

  • 5. Overall Dimension