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Modern distribution networks require switching equipment that not only interrupts fault currents rapidly but also supports intelligent grid operation and long-term asset reliability. Our Power Distribution Circuit Breaker is engineered for utility substations, industrial power systems, renewable energy projects, and commercial distribution networks where operational continuity is critical. Built around advanced vacuum interruption technology, it delivers stable performance without using insulating oil or SF6 gas, significantly reducing maintenance requirements while supporting environmentally responsible power infrastructure.
This product family is fully compatible with a wide range of medium-voltage applications. Customers looking for higher-voltage transmission solutions can also explore our 40.5KV Vacuum Circuit Breaker, while outdoor utility projects benefit from the rugged Outdoor Vacuum Circuit Breaker. For substation protection schemes, the 35KV Substation Circuit Breaker provides dependable feeder protection, and applications requiring higher interrupting capability can utilize the High Voltage Vacuum Circuit Breaker. Together, these products form a complete medium- and high-voltage switching solution for modern electrical distribution systems.
Unlike conventional circuit breakers that focus primarily on fault interruption, this Power Distribution Circuit Breaker is engineered around long-term operational efficiency. The sealed vacuum interrupter minimizes contact wear, while the modular operating mechanism simplifies inspection and component replacement. Every breaker is factory calibrated before shipment to ensure consistent opening and closing characteristics throughout its service life.
The compact structure allows installation in indoor metal-clad switchgear, compact substations, prefabricated transformer stations, containerized energy storage systems, and outdoor distribution kiosks. Optional intelligent controllers support digital substations by providing remote monitoring, predictive maintenance data, equipment diagnostics, and real-time operating status through SCADA or energy management systems.
| Technical Item | Specification |
|---|---|
| Rated Voltage | 12kV / 24kV / 36kV / 40.5kV |
| Rated Frequency | 50Hz / 60Hz |
| Rated Continuous Current | 630A, 1250A, 2000A, 2500A, 3150A |
| Rated Short-Circuit Breaking Current | 20kA, 25kA, 31.5kA, 40kA |
| Rated Short-Time Withstand Current | 20kA–40kA (3s) |
| Rated Peak Withstand Current | 50kA–100kA |
| Mechanical Endurance | Up to 30,000 operating cycles |
| Electrical Endurance | E2 Class (IEC 62271-100) |
| Operating Mechanism | Spring-operated or Permanent Magnetic Actuator |
| Control Voltage | DC24V / DC48V / DC110V / DC220V / AC220V |
| Protection Degree | IP54 / IP65 (configuration dependent) |
| Communication Interface | Modbus RTU, IEC 61850, DNP3 (Optional) |
| Ambient Temperature | -40°C to +70°C |
| Installation Environment | Indoor switchgear, compact substations, outdoor kiosks, renewable energy systems |
| Applicable Standards | IEC 62271-100, IEC 62271 Series, ANSI C37, GB/T 1984 |
The Power Distribution Circuit Breaker is widely deployed across utility distribution substations, industrial manufacturing facilities, renewable energy plants, commercial buildings, airports, rail transit systems, mining operations, petrochemical facilities, data centers, and municipal infrastructure. Its flexible configuration allows engineers to standardize equipment across multiple voltage levels while maintaining high reliability and simplified maintenance procedures.
For projects requiring intelligent grid automation, optional monitoring modules provide breaker health diagnostics, operation counters, contact wear analysis, temperature monitoring, and remote control functions. These capabilities help maintenance teams shift from scheduled servicing to condition-based maintenance, reducing unexpected outages and lowering total ownership costs.
With extensive manufacturing experience in medium-voltage switching equipment, we supply OEM and customized solutions for global utilities, EPC contractors, electrical panel builders, and power distribution system integrators. Every breaker undergoes comprehensive routine testing—including mechanical operation, insulation performance, contact resistance, timing synchronization, and power-frequency withstand testing—before shipment to ensure dependable field performance. Combined with flexible engineering support, international certifications, and stable production capacity, our Power Distribution Circuit Breaker provides a reliable solution for modern electrical distribution projects worldwide.
