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VCB Ring Main Units — Vacuum Circuit Breaker RMU
VCB ring main units use vacuum circuit breakers for the transformer and feeder protection ways, providing full breaking capacity instead of load-break switching alone. Rated 12–24 kV, 630–1250 A with circuit-breaker protection modules, for distribution networks requiring fault interruption at each way.
Applications
Distribution networks with high fault duty
Transformer and feeder protection
Industrial and data center networks
Renewable plant collector feeders
Key Features
- Vacuum circuit breaker protection modules
- Full fault-breaking capacity per way
- 12–24 kV, 630–1250 A
- Load-break plus breaker protection
- Relay protection and metering options
- Compact ring-main configuration
Selection Guide
Protection
Choose VCB ways where fault interruption and relay protection are required.
Rating
Match 630–1250 A and the network fault level.
- Frequently Asked Questions
What is a VCB ring main unit?
A VCB RMU uses vacuum circuit breakers instead of load-break switches, providing full fault-breaking and protection capability at each way.
Load-break vs breaker?
Load-break switches only switch load current; vacuum circuit breakers also interrupt fault currents with relay protection.
Instant Selection & Quote Calculator
Select your specifications to get an estimated price instantly.
| Base price (interpolation) | $2,350 |
| × Product factor | ×1.0000 |
| × Country factor | ×1.0000 |
| × Copper-linked factor | ×1.0000 |
| + Options / accessories | $0 |
Complete equipment — no winding copper linkage
Reference prices are for estimation only and do not constitute a formal offer.
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