... contactor, relay, lighting electrical SCBK60 Explosion- Proof Control Box Apply to control the on-off operation of contactor, relay, lighting ... 50Hz, 220V/380V, DC voltage up to 220.The control box is composed of secure shell, Explosion-proof elements ... fibre reinforced unsaturated polyester fiber which has corrosion resistance, static resistance, impact resistance and heat stability.Explosive Gas ...