BKD19-400 Ⅱ Mining Explosion proof Vacuum Feed SwitchDetailed product description：

BKD19-400 Ⅱ Mining Explosion proof Vacuum Feed Switch

One purpose
BKD19-400 Ⅱ Mine Explosion proof Vacuum Feed Switch is suitable for underground coal mines with explosive gas mixtures and coal dust. It is used as the main switch of the power supply system, branch switch of the distribution branch, and also for infrequent starting of large capacity motors in AC 50Hz, voltage up to 660V or 1140V, and current up to 400A lines.

Two functions
Equipped with closing, opening, fault indication, and insulation resistance display on the dry ohmmeter;
Overload and short circuit multiples can be set through plug-in dialing;
Backup protection with short circuit, overload leakage lockout, three-phase symmetrical leakage protection, selective leakage protection, and branch switch leakage protection;
It has wind power gas locking function.

Technical Parameters and Specifications of Three BKD19-400 Ⅱ Mining Explosion proof Vacuum Feed Switch

model	Rated Current	Ultimate breaking capacity kA		short circuit protection		Overload protection setting range A	Selective leakage
		660V	1140V	Setting range A	Working hours
BKD19-400Ⅱ	four hundred	nine	seven point five	600-2400	<100ms	120-400	have