With two decades of in-field expertise, our high voltage outdoor circuit breakers incorporate the latest vacuum switching technology to deliver exceptional safety and longevity. The portfolio includes designs ranging from the compact
27.5kV Outdoor Circuit Breaker ideal for rural distribution, to the state-of-the-art
27.5kV Vacuum Circuit Breaker for high-speed fault clearing. For demanding outdoor installations, the
Outdoor High Voltage Vacuum Circuit Breaker features an all-weather enclosure, while the cost-optimized
27.5kV Vacuum Breaker offers a maintenance-free solution for industrial plants. All models undergo rigorous type testing to guarantee performance under rated and short-time conditions. Key specifications of these breakers are summarized below:
- Rated voltage up to 27.5kV, suitable for medium voltage distribution
- Vacuum interrupters with superior dielectric recovery
- Spring-operated or magnetic actuator mechanisms for reliable switching
- Epoxy resin insulation ensuring weather resistance and long creepage distances
- Compliance with IEC 62271-100 and ANSI/IEEE standards
- Internal arc fault containment verified per IEC 62271-200
- Extensive spare parts and retrofit kit availability
| Parameter | Value |
|---|
| Rated Voltage | 27.5 kV |
| Rated Current | 630A / 1250A / 2000A |
| Rated Short-Circuit Breaking Current | 20 kA / 25 kA / 31.5 kA |
| Rated Frequency | 50/60 Hz |
| Mechanical Endurance | 10,000 operations |
| Operating Mechanism | Motor-driven spring stored energy |
| Insulation Medium | Vacuum / SF6-free |
| Protection Degree | IP55 |
| Rated Insulation Level (BIL) | 250 kV |
| Creepage Distance | ≥ 25 mm/kV (heavy pollution) |
| Opening Time | ≤ 60 ms |
| Closing Time | ≤ 100 ms |
| Operating Voltage (Auxiliary) | 110V DC / 220V AC |
| Weight (typical) | Approx. 450 kg |
| Dimensions (W x D x H) | 900 x 750 x 2200 mm |
The High Voltage Outdoor Circuit Breaker provides a reliable solution for utility substations, renewable energy plants, and heavy industry where uninterrupted power is critical. Its robust construction withstands extreme temperature variations from -40°C to +55°C without derating. The breaker’s IP55 weatherproof enclosure protects against rain, dust, and salt spray, permitting direct installation in coastal zones without additional shelter. For remote locations, optional solar-powered DC supply and wireless communication modules maintain full connectivity. Below are the standout features that make the High Voltage Outdoor Circuit Breaker a preferred choice among OEMs and EPC contractors:
- Sealed vacuum interrupters with a design life exceeding 30,000 operation cycles
- Double-insulated bushings achieving a BIL of 250 kV for superior lightning protection
- Modular tripolar or single-pole configurations for flexible system integration
- Manual and motor charging options with an emergency hand crank
- Local/remote selector switch and position indicators for safe operation
- Built-in current transformers with 0.5 accuracy class for metering and relaying
- Corrosion-resistant galvanized steel frame with epoxy coating
- Integrated voltage sensors eliminating the need for separate PT cubicles
- Low maintenance: only visual inspection recommended every 5 years
In addition to standard variants, the High Voltage Outdoor Circuit Breaker can be customized with capacitive voltage indication, automatic reclosing relays, and synchronizing panels. The lockable control cabinet houses a programmable digital relay supporting multiple protection curves, and all wiring terminates on heavy-duty terminal blocks for hassle-free commissioning. Factory acceptance tests include high-potential, insulation resistance, timing, and contact resistance measurements, with a full test report supplied. Installation is straightforward—the breaker ships fully assembled and adjusted, requiring only bolting to a concrete pad or steel gantry. All components are accessible from ground level, and the breaker can be equipped with a padlockable grounding switch to ensure safe maintenance. Our team can also commission the unit on site, perform routine diagnostics, and train operating personnel. The High Voltage Outdoor Circuit Breaker meets or exceeds IEC 62271-100, ANSI C37, and GB 1984 standards, ensuring global compliance. Spare parts such as vacuum bottles, charging motors, and auxiliary switches are stocked in regional warehouses for immediate dispatch. The breaker seamlessly integrates into SCADA systems via Modbus, DNP3, or IEC 61850, providing real-time status and event logging. Custom paint colors and bilingual labeling are available for international projects, backed by a 10-year extended warranty program and a 25-year manufacturer’s warranty on vacuum interrupters.
Whatsapp
