Medium Voltage Circuit Breakers
Vacuum, air magnetic, SF6, and oil circuit breakers for metal-clad switchgear, substations, and industrial distribution systems.
Medium Voltage Breaker Types
Vacuum Circuit Breakers (VCB)
1200A - 4000A at 5-38kVModern, maintenance-friendly breakers using vacuum interrupters for arc extinction.
Applications
Key Advantages
- Low maintenance
- Long contact life
- Environmentally friendly
- Fast operation
Popular Models
ABB VD4 • GE VB1 • Siemens 3AH • Eaton VCP-W • Schneider Evolis
Air Magnetic Circuit Breakers
1200A - 3000A at 4.16-15kVTraditional drawout breakers using magnetic blowout for arc extinction.
Applications
Key Advantages
- Proven reliability
- Extensive parts availability
- Cost-effective refurbishment
- Well-understood technology
Popular Models
GE Magne-Blast AM • Westinghouse 50DHP • Allis-Chalmers MA • ITE HK
SF6 Circuit Breakers (Medium Voltage)
1200A - 3000A at 15-38kVGas-insulated breakers for compact, reliable medium voltage applications.
Applications
Key Advantages
- Compact design
- Low maintenance
- High reliability
- Suitable for harsh environments
Popular Models
ABB HD4 • Siemens 8DA/8DB • Schneider SF6 • Mitsubishi
Oil Circuit Breakers
600A - 2000A at 2.4-38kVLegacy breakers using oil for arc extinction and insulation.
Applications
Key Advantages
- Still in wide use
- Can be refurbished
- Parts available
- Proven designs
Popular Models
GE FK • Westinghouse DHP • ITE HK • Allis-Chalmers
Available Inventory
ABB VD4 Vacuum Circuit Breaker
GE VB1 Vacuum Breaker
Cutler-Hammer 5KV-250 Vacuum
Cutler-Hammer Type W VCP
Need Technical Assistance?
Our engineers can help with breaker selection, cross-referencing, and retrofit planning for your medium voltage switchgear.