BZX-2.5,40 Mining explosion-proof lighting signal comprehensive deviceDetailed product description：

·Scope and Application
BZX-2.5、 The 4.0 mining explosion-proof lighting signal comprehensive device is suitable for controlling the power supply of 127V lighting and signal loads in environments with explosive mixture gases such as methane and coal dust in underground coal mines and their surrounding media. It also has functions such as short-circuit protection, leakage action, and cable insulation hazard indication.

·BZX-2.5, 40 mining explosion-proof lighting signal comprehensive device model and meaning


·Main technical parameters of BZX-2.5 and 40 mining explosion-proof lighting signal comprehensive device:

Model, Specifications	main transformer			Leakage resistance action value （kΩ）	earth leakage protection Action time (s)	Short circuit protection distance and Action Time
	Rated voltage (V)	Rated current (A)	wiring method
BZX-2.5	660/133 380/133	two point one nine 3.79/10.85	Y/△ △/△	Factory setting value <1.5 (1.5-3 adjustable)	≤0.25	Protection distance 0-150mm Action time ≤ 0.25s
BZX-4.0		three point four nine 6.1/17.4