ZW8-12F(G) Outdoor Vacuum Circuit Breaker (Intelligent Type)
ZW8-12F(G) Outdoor Vacuum Circuit Breaker (Intelligent Type) is a 12kV outdoor vacuum circuit breaker designed for modern medium-voltage distribution networks. It combines reliable vacuum interruption technology with intelligent control functions to provide efficient switching, fault protection, remote monitoring, and distribution automation capabilities. With a compact pole-mounted structure, low maintenance requirements, and excellent environmental adaptability, it is suitable for rural power networks, utility distribution systems, renewable energy projects, and smart grid applications.
Get a QuoteOverview
The ZW8-12F(G) Outdoor High-Voltage Vacuum Circuit Breaker is designed for reliable operation in 12kV power distribution networks, providing efficient switching and protection under varying load conditions and demanding outdoor environments. Equipped with advanced vacuum interruption technology and an optional permanent magnetic operating mechanism, it delivers stable performance, long service life, and reduced maintenance requirements.
Featuring an SF6-free design, the ZW8-12F(G) eliminates the need for gas handling while providing an environmentally friendly solution for modern power systems. It is widely used in substations, mining power networks, rural distribution grids, and smart automation applications where safety, reliability, and easy operation are required.
Features
Advanced Vacuum Interruption Technology
The ZW8-12F(G) adopts reliable vacuum interruption technology to achieve fast arc extinction and efficient fault current breaking. The design minimizes contact erosion and improves electrical endurance for long-term operation.
Permanent Magnetic Operating Mechanism (Optional)
An optional permanent magnetic actuator is available to provide stable switching performance with reduced maintenance requirements. Its simplified mechanical structure helps extend service life and improve operational reliability.
Compact Outdoor Pole-Mounted Structure
The compact outdoor design allows flexible pole-mounted installation while maintaining reliable performance under challenging environmental conditions. It is suitable for outdoor distribution networks where space, durability, and easy deployment are important.
Integrated Current Transformer and Protection Functions
The breaker can be equipped with integrated CTs and intelligent protection functions to support distribution automation upgrades. It enables accurate current measurement, fault protection, and integration with smart grid management systems.
Technical Data
| Item | Unit | Parameter | |
| Rated Voltage | kV | 12 | |
| Rated Current | A | 630 / 1250 | |
| Rated Frequency | Hz | 50 | |
| Rated Short Circuit Breaking Current | kA | 20 / 25 | |
| Rated Short-Circuit Making Current (Peak) | 50 / 63 | ||
| Rated Peak Withstand Current | 50 / 63 | ||
| Rated Short-Time Withstand Current (4s) | 20 / 25 | ||
| Rated Power Frequency Withstand Voltage (1min) | Phase-to-Ground/Phase-to-Phase | kV | 42 |
| Across Gap | 48 | ||
| Rated Lightning Impulse Withstand Voltage (Peak) | Phase-to-Ground/Phase-to-Phase | 75 | |
| Across Gap | 85 | ||
| Rated Short-Circuit Current Breaking Times | / | 30 | |
| Rated Current Breaking Times | Times | 10000 | |
| Mechanical life | 10000 | ||
| Permissible Contact Wear Thickness | mm | 3 | |
| Weight | kg | 170 | |
Typical Application Scenarios
The ZW8-12F(G) Outdoor High-Voltage Vacuum Circuit Breaker is designed for reliable switching and protection in various 12kV outdoor distribution applications. Its compact structure, strong environmental adaptability, and intelligent control options make it suitable for demanding power networks.
Typical applications include:
- Rural Power Distribution Lines
Provides reliable protection against faults caused by lightning, overload conditions, and temporary line disturbances. - Mining and Oilfield Substations
Designed for stable operation in dusty, humid, and corrosive environments with demanding outdoor conditions. - Utility Automation Projects
Supports automatic reclosing functions and smart grid integration to improve distribution network reliability and fault recovery efficiency. - Outdoor Solar Power Plants
Ensures stable switching and protection performance for renewable energy systems with variable power generation conditions.
Why Choose ZW8-12F(G)?
The ZW8-12F(G) combines reliable vacuum switching technology, flexible installation options, and intelligent protection capabilities to meet the requirements of modern outdoor distribution systems. Its sealed pole structure improves environmental resistance, while integrated monitoring and protection functions support automation upgrades and remote management.
Key advantages include:
- Reliable operation in harsh outdoor environments
- Compact pole-mounted design for easy installation
- Low maintenance vacuum interruption technology
- Compatibility with SCADA and smart control systems
- Support for distribution automation applications
- Enhanced protection and switching reliability
