HCM-12 gas insulated metal enclosed switchgear(referred as SF6 RMU)is highly reliable and almost maintenance free. It is suitable for 3.6-12kV power distribution system of ring or radial configuration. All live parts, including load break switch, circuit breaker,earthing switch and main busbar are sealed in a tank made of epoxy resin. Elbow-shape cable connectors are used for incoming and outgoing cables.