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For reliable power distribution in medium-voltage networks, many utilities turn to advanced switching solutions that combine fault interruption with automatic reclosing capabilities. A crucial component in this segment is the 33KV Vacuum Circuit Breaker, designed to handle high-current faults while ensuring minimal maintenance thanks to vacuum interrupter technology. For installations exposed to weather and fluctuating outdoor conditions, an Outdoor Recloser Circuit Breaker provides robust, weatherproof performance that drastically reduces outage durations. In smart grid applications, the integration of an Automatic Reclosing Circuit Breaker eliminates manual resetting after transient faults, restoring service in seconds and improving system reliability indices. Our 33KV Outdoor Recloser Circuit Breaker specifically targets pole-mounted and substation applications where space is limited but performance cannot be compromised, delivering dependable protection up to 33kV with electronic control flexibility.
The Vacuum Recloser Circuit Breaker merges vacuum arc-quenching technology with a microprocessor-based reclosing logic, resulting in a device that can safely interrupt load and fault currents up to tens of kiloamperes while automatically restoring circuits after temporary faults. Its core advantages include long electrical life, oil-free operation, and compatibility with SCADA systems for remote monitoring and control. Below are the fundamental design features that make this equipment a preferred choice across electrical utilities:
The following table summarizes the key technical parameters of our standard Vacuum Recloser Circuit Breaker models, covering both indoor and outdoor configurations.
| Parameter | Specification |
| Rated voltage | 12 kV / 24 kV / 33 kV |
| Rated frequency | 50 Hz / 60 Hz |
| Rated current (A) | 630 / 1250 / 2000 |
| Rated short-circuit breaking current (kA) | 20 / 25 / 31.5 |
| Rated short-time withstand current (3 s) | 20 kA / 25 kA |
| Rated peak withstand current | 50 kA / 63 kA |
| Power frequency withstand voltage (1 min) | 42 kV (12 kV), 65 kV (24 kV), 70 kV (33 kV) |
| Lightning impulse withstand voltage (1.2/50 µs) | 75 kV / 125 kV / 170 kV |
| Mechanical endurance (operations) | 10,000 |
| Electrical endurance at rated short-circuit current | 30–50 operations |
| Storage temperature | -50°C to +80°C |
| Humidity | ≤ 95% RH (non-condensing) |
| Control voltage (DC) | 24 V / 48 V / 110 V / 220 V |
| Communication protocols | IEC 61850, DNP3, Modbus |
The combination of low-maintenance vacuum technology, sophisticated electronic control, and rugged construction ensures that the Vacuum Recloser Circuit Breaker adapts to both greenfield installations and retrofits of aging oil or air-magnetic breakers. Field-proven in thousands of installations worldwide, the unit consistently reduces customer minutes lost and improves SAIDI/SAIFI metrics, supporting the transition toward self-healing distribution networks.
