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The Outdoor Permanent Magnet Circuit Breaker (Models: ZW32-12G / ZW32-24G) is a high-performance outdoor vacuum circuit breaker designed for 12kV and 24kV medium-voltage distribution networks. Featuring an advanced permanent magnet operating mechanism, it delivers fast switching, high reliability, low power consumption, and maintenance-free operation. It is widely used for switching load currents, overload currents, and short-circuit currents in urban and rural power grids, substations, mining operations, railway electrification systems, and renewable energy projects.
Compared with traditional spring-operated circuit breakers, the permanent magnet operating mechanism offers a simpler structure, fewer moving parts, longer service life, and more consistent opening and closing performance. This makes it an ideal solution for modern smart grids, distribution automation systems, and applications requiring frequent switching operations.
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1-Upper outlet 2-Vacuum interrupter 3-Insulating tube 4-Lower exit line 5-Conductive clip 6-Soft connection 7-Insulating pull rod 8-Contact pressure spring 9-Opening spring 10-Driver connection board 11-Mechanism output shaft 12-Operating mechanism 13-Institutional box 14-Current transformer |
1-Operating handle 2-Isolated spindle 3-Circuit breaker manual opening and closing handle 4-Circuit breaker energy storage handle 5-Separation and combination instructions 6-Wiring plug 7-Current transformer 8-Insulator 9-Isolation rack 10-Insulating sample rod 11-Terminal block (input side) 12-Isolation blade 13-Terminal block (output end) 14-Breaker |
| Item | Specification |
| Rated Voltage | 12kV / 24kV |
| Rated Frequency | 50Hz |
| Rated Current | 630A / 1250A |
| Rated Short-Circuit Breaking Current | 20kA / 25kA |
| Rated Peak Withstand Current | 50kA / 63kA |
| Rated Short-Circuit Making Current | 50kA / 63kA |
| Rated Operating Sequence | O-0.3s-CO-180s-CO |
| Mechanical Life | 10,000 Operations |
| Rated Short-Circuit Breaking Operations | 20 Times |
| Secondary Circuit Power Frequency Withstand Voltage | 2kV |
| Lightning Impulse Withstand Voltage | 125kV / 145kV |
| Weight | 115kg |
The Outdoor Permanent Magnet Circuit Breaker is designed for medium-voltage power systems requiring reliable switching, intelligent control, and long-term operational stability.
The Outdoor Permanent Magnet Circuit Breaker combines a vacuum interrupter with a permanent magnet actuator. During normal operation, the actuator precisely controls the opening and closing of the contacts using electromagnetic force. When a fault occurs, the vacuum interrupter rapidly extinguishes the arc, ensuring safe interruption of the fault current. Compared with conventional spring mechanisms, the permanent magnet actuator provides faster response, more accurate operation, lower energy consumption, and greater mechanical reliability.
What is an Outdoor Permanent Magnet Circuit Breaker?
It is a medium-voltage vacuum circuit breaker that uses a permanent magnet operating mechanism instead of a traditional spring mechanism, providing higher reliability, lower maintenance, and longer service life.
What are the advantages of a permanent magnet operating mechanism?
Permanent magnet actuators have fewer moving parts, lower power consumption, faster response, improved mechanical stability, and require virtually no maintenance throughout their service life.
Where is this circuit breaker commonly used?
It is widely applied in substations, utility distribution networks, smart grids, renewable energy projects, railway power supply systems, mining operations, and industrial power distribution systems.
Can this circuit breaker support remote monitoring?
Yes. It can be integrated with SCADA, distribution automation systems, and intelligent protection devices for remote monitoring, remote control, and smart grid applications.
Address
Jinlu Industrial Zone, Beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province, China
