Comparison
RMU vs VCB: What's the Difference?
An RMU is a compact distribution assembly; a VCB is a type of circuit breaker. They operate at different points in a network.
| Specification | RMU (Ring Main Unit) | VCB (Vacuum Circuit Breaker) |
|---|---|---|
| What it is | Compact switchgear assembly | A circuit-breaker device |
| Typical use | Distribution ring networks | Switching/protecting circuits |
| Interruption | Load-break + protection | Vacuum interruption of fault current |
Frequently asked questions
- Is an RMU the same as a VCB?
- No — an RMU is a compact distribution switchgear unit; a VCB is a breaker that may be used within switchgear.
Not sure which to choose?
We will recommend based on your site and load case.