Suitable for dangerous environment of methane and coal dust explosion and power supply system with frequency 50Hz, rated voltage 1140V, 660V, 380V ungrounded three-phase neutral point, transform of power supply of 1140V, 660V, 380V to 127V, work as
remote starting and stopping control, short circuit and leakage protection of 1.2kW hand-held coal electric drill.

Round shell, mouth type quick opening structure and drawer type. Split mounting with main transformer.

Long-distance power transmission of hand-held drill is controlled by pilot circuit to ensure cable not being loaded when no drilling.

Electronic integrated protector, with overload, short-circuit, leakage latch and other protection functions.

Power supply, operation, all kinds of fault status indication available.