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Modern utilities require switching equipment that is not only reliable during fault interruption but also easy to install, operate, and maintain throughout its service life. Our Pole Mounted Vacuum Circuit Breaker is specifically developed for medium-voltage overhead distribution systems where installation space is limited and uninterrupted power supply is essential. Built around maintenance-free vacuum interruption technology, it provides dependable protection for utility feeders, industrial parks, renewable energy projects, mining facilities, and rural electrification networks.
This product family also includes the 12KV Pole Mounted Circuit Breaker, the intelligent 12KV Automatic Recloser Circuit Breaker, the weather-resistant 12KV Outdoor Vacuum Circuit Breaker, and the compact Outdoor Pole Top Circuit Breaker, allowing utilities to standardize equipment across complete overhead distribution networks while reducing spare parts inventory and maintenance complexity.
Unlike conventional outdoor switchgear requiring complex foundations, the Pole Mounted Vacuum Circuit Breaker is engineered for direct installation on concrete poles, steel poles, or H-frame structures. Its lightweight modular construction shortens installation time while reducing lifting equipment requirements. Factory-adjusted operating mechanisms eliminate on-site calibration, helping EPC contractors complete commissioning faster and reducing labor costs.
The sealed vacuum interrupter completely removes the need for insulating oil or SF6 gas handling. Combined with corrosion-resistant stainless steel operating cabinets and UV-resistant polymer insulation, the breaker requires only routine visual inspection throughout most of its operating life. This significantly lowers scheduled maintenance expenses while improving long-term network reliability.
| Design Element | Engineering Advantage | Customer Benefit |
|---|---|---|
| Vacuum Interrupter Technology | High-speed arc extinction inside sealed vacuum chambers without oil or SF6 insulation media | Lower maintenance requirements and improved environmental compliance |
| Solid Insulated Epoxy Pole Structure | Phase-to-phase insulation is integrated into compact epoxy resin housings with excellent dielectric strength | Reliable operation in polluted, humid and coastal environments |
| Outdoor Stainless Steel Control Cabinet | Weather-resistant enclosure protects control components against dust, rain and corrosion | Longer equipment lifespan and reduced field maintenance |
| Magnetic Actuator / Spring Operating Mechanism | Provides stable opening and closing performance with low operating energy requirements | Suitable for remote locations with limited auxiliary power supply |
| Integrated Current Sensing System | Optional CTs and sensors provide real-time electrical monitoring | Improves fault detection and supports smart grid operation |
| Remote Communication Capability | Supports IEC 61850, DNP3 and Modbus communication protocols | Easy integration with SCADA and distribution automation systems |
The Pole Mounted Vacuum Circuit Breaker is widely used in medium-voltage distribution systems where reliability, accessibility and fast fault isolation are critical.
| Parameter | Specification |
|---|---|
| Rated Voltage | 12 kV |
| Rated Frequency | 50 / 60 Hz |
| Rated Current | 630 A / 1250 A |
| Rated Short Circuit Breaking Current | 20 kA / 25 kA |
| Rated Peak Withstand Current | 50 kA / 63 kA |
| Short-Time Withstand Current | 20 kA / 25 kA for 3 seconds |
| Mechanical Endurance | 10,000 operating cycles |
| Electrical Endurance | 30 full short-circuit interruptions |
| Operating Mechanism | Magnetic actuator or motor-charged spring mechanism |
| Insulation System | Vacuum interrupter + solid epoxy insulation |
| Protection Degree | IP55 outdoor enclosure |
| Operating Temperature | -40°C to +55°C |
| Control Voltage | 24 / 48 / 110 / 220 V DC |
| Communication Options | IEC 61850 / DNP3 / Modbus |
| Applicable Standards | IEC 62271-100, IEC 62271-111, ANSI C37.60 |
