Flameproof plug and socket connector sw-40 (500v, 40a)

Flameproof plug and socket connector is designed for use in underground coal mines in excavations of methane explosion hazard class a, b, or c, or coal dust explosion hazard class A or B. Complete plug and socket connector consist of socket unit (S-4) and plug unit (W-4) and use for connecting and distribution 5-conductors of a cable power mobile and portable devices. Plugand-socket connector is to be operated in electric systems with automatic connector switch.