JPU1 series medium voltage SF6 ring main unit(refered as SF6 RMU) is highly reliable and is almost maintenance-free.It’s suitable for 3.6 to 24kV power distribution system of configuration ring or radial. All live parts including load break switch , circuit breaker, earthing switch and main busbar are sealed in a tank made of stainless steel. Elbow-shape cable connectors are used for incoming or out-going cables.