ABB VD4 & VM1 Vacuum Circuit Breakers | Original MV VCB New
The ABB VD4 and VM1 series represent the peak of medium voltage vacuum circuit breaker technology. Designed for primary distribution up to 40.5kV, these breakers provide unmatched reliability for protecting cables, overhead lines, and motors. Whether you require the time-tested EL mechanical actuator of the VD4 or the ultra-reliable magnetic drive of the VM1, we ensure you receive 100% original ABB hardware for your critical power infrastructure.
Product Highlights
- Zero-Maintenance Magnetic Drive: The VM1 uses a magnetic actuator with only one moving part, ideal for high-frequency switching applications.
- Compact & Modular Design: Easily fits into standard Unisafe or ZS1 switchgear, simplifying panel manufacturing.
- Integrated Sensing: Available with optional current and voltage sensors for advanced grid monitoring and smart grid readiness.
Technical Specifications
| Feature |
ABB VD4 (Standard) |
ABB VM1 (Magnetic) |
| Actuator Type |
Mechanical (Spring) |
Magnetic (Permanent) |
| Rated Voltage |
12kV - 40.5kV |
12kV - 24kV |
| Rated Current |
Up to 4000A |
Up to 3150A |
| Short-Circuit Current |
Up to 50kA |
Up to 40kA |
| Maintenance Cycle |
Periodic lubrication needed |
Virtually Maintenance-Free |
| Switching Frequency |
Standard |
Extremely High |
Application Fields
- Power Plants: Main and auxiliary circuit protection for thermal, hydro, and nuclear plants.
- Heavy Industry: Reliable control for steel mills, oil refineries, and chemical processing.
- Transportation: Traction power substations for railways and metros.
- Utilities: Primary distribution substations for urban and rural grids.
Frequently Asked Questions
Q: Can I replace a VD4 with a VM1 in my existing switchgear?
A: Yes, many versions of the VM1 share the same dimensions as the VD4, but you must check the control circuit compatibility.
Q: What is the lead time for a 12kV 1250A VD4?
A: Common configurations are in stock for 5-7 day shipping; custom specs take 4-6 weeks.
Q: Does it come with a test report?
A: Every ABB VCB includes the original factory routine test report.
Q: Is the VM1 better than the VD4?
A: The VM1 is superior for high-frequency operations, while the VD4 is preferred for standard utility applications due to its purely mechanical nature.
Q: What accessories are included as standard?
A: Standard breakers include basic auxiliary contacts; charging handles and coils are pre-installed.
Q: How do you handle shipping for such heavy equipment?
A: We use reinforced IPPC-certified seaworthy wooden crates with internal shock absorption.
