HJ-OVCB Series Outdoor Vacuum Circuit Breaker
12kV to 40.5kV / Spring & Magnetic Actuator / IP65+
The HJ-OVCB Series Outdoor Vacuum Circuit Breaker delivers full-spectrum coverage for every outdoor switching requirement. From highly compact 12kV pole-mounted units to heavy-duty 40.5kV outdoor substation breakers, this series integrates advanced actuation technologies and premium weatherproof insulation. It provides the ultimate reliable foundation for auto-reclosing (ACR), fault isolation, and smart grid automation in extreme environments.
Ideal for Overhead Distribution & Substations:
- ✓ Standard Pole-Mounted Switching & Sectionalizing
- ✓ Smart Grid Auto-Recloser (ACR) Integration
- ✓ Boundary “Watchdog” & High-Frequency Nodes
- ✓ Rural Grid Upgrades & 33/36kV Outdoor Substations
1. Full-Spectrum Voltage & Application Coverage
Unlike singular product offerings, the HJ-OVCB series covers every outdoor switching requirement. From the highly popular compact 12kV/24kV pole-mounted units (like our HJ-OVCB-S series) to heavy-duty 40.5kV outdoor substation breakers (HJ-OVCB-40 series), we provide exactly the right dielectric strength and breaking capacity for your specific grid segment.
2. Advanced Actuation: Spring & Permanent Magnetic
Reliability starts with the operating mechanism. We offer both mature, highly optimized motor-spring mechanisms (for standard applications) and state-of-the-art Permanent Magnetic Actuators (featured in our HJ-OVCB-M series). The magnetic actuator drastically reduces moving parts, providing ultra-fast response times and an unparalleled mechanical lifespan exceeding 10,000 operations without maintenance.
3. Extreme Outdoor Resilience (IP65+)
Engineered to survive decades on a utility pole. The vacuum interrupters are embedded in premium hydrophobic outdoor epoxy resin or UV-resistant silicone rubber (Solid Dielectric). Coupled with rust-proof stainless-steel or specialized marine-grade coated enclosures, these breakers easily withstand heavy icing, coastal salt fog, and intense desert solar radiation.
4. Hardware-Ready Auto Reclosing (Smart Grid)
Transform your overhead lines into a self-healing grid. Our "Smart" variants (such as the HJ-OVCB-R and HJ-OVCB-W boundary switches) come pre-wired with precision current/voltage transformers (CT/PT). They are hardware-ready to seamlessly connect with external Feeder Terminal Units (FTU), enabling your engineers to easily deploy Auto-Reclosing (ACR) logic and remote SCADA control.
Global Factory Acceptance & Turnkey Support
Every outdoor breaker is subjected to rigorous weather-simulation and dielectric testing. We supply complete pole-mounting kits, surge arresters (optional), and standardized aviation plug interfaces for your control cubicles, ensuring rapid and safe installation by your local line crews.
Model Selection & Technical Specifications
* (Note: The matrix below maps our comprehensive outdoor series. Detailed dimensional drawings and customized FTU control box configurations are available upon EPC request.)
| MODEL SERIES | RATED VOLTAGE | CORE INSULATION / ENCLOSURE | KEY ENGINEERING FEATURE | TYPICAL APPLICATION |
|---|---|---|---|---|
| HJ-OVCB-S Series | 12kV / 24kV | Solid Dielectric (Epoxy/Silicone) | Compact, High Reliability | Standard Pole-Mounted Switching |
| HJ-OVCB-R Series | 12kV | Solid Dielectric | Smart Recloser & Motorized | Auto-Recloser (ACR) & Smart Grid |
| HJ-OVCB-W Series | 12kV | SF6-Gas Insulation (Zero gauge) | Zero-sequence CT Integrated | Boundary "Watchdog" Switch |
| HJ-OVCB-M Series | 12kV | Solid Dielectric | Permanent Magnetic Actuator | High-frequency Operation Nodes |
| HJ-OVCB-C Series | 12kV | Vacuum / Air Composite | Classic Rugged Design | Rural Grid Upgrades |
| HJ-OVCB-40 Series | 40.5kV | Porcelain / Silicone Rubber | High Clearance, Heavy Duty | Outdoor Substations (33/36kV) |
General Electrical Ratings
- Rated Current: 630A / 1250A (Depending on model).
- Rated Short-Circuit Breaking Current: 20kA / 25kA / 31.5kA.
- Mechanical Endurance: 10,000 Operations (Standard) / >10,000 (Permanent Magnetic).
- Secondary Control Voltage: 24V DC, 48V DC, 110V DC/AC, or 220V DC/AC available.
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