Ring Main Unit (RMU) is a totally sealed with SF6 gas or other insulation material, Rockwill's RMU is a gas-insulated compact switchgear unit.
A ring main unit or RMU is combinated wiith minimum three ways together, The primary switching devices can be either switch disconnectors or fused switch disconnectors or circuit breakers (VCB or GCB).
Normally, a primary circuit breaker is the switching device, which can be vacuum circuit breaker or gas circuit breaker ,etc. it is always equipped with protective relay, it is a very basic self-powered type or a more advanced one with communication capabilities.
The rated voltage and current ranges for RMUs typically reach up to 40.5 kV and 630 A respectively.
Different combinations SLD request pls contact us.
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1. One-stop supplier globally.
2. More than 10 years professional experiences in electrical appliance industry.
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5. All the products with accessories under strict quality control and final inspection before shipping.
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8. Warranty assurance: 12 month
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