LW58-12 Outdoor SF6 Pole-Mounted Circuit Breaker
LW58-12 Outdoor SF6 Pole-Mounted Circuit Breaker is a 12kV outdoor switching and protection device designed for medium-voltage overhead distribution networks. It adopts sealed SF6 insulation and arc-extinguishing technology to provide reliable fault interruption, fast switching, and stable operation under various outdoor conditions. With excellent environmental resistance, low maintenance requirements, and optional automation functions, the LW58-12 is suitable for utility distribution systems, rural power grids, renewable energy projects, and pole-mounted feeder protection applications.
Get a QuoteOverview
The LW58-12 SF6 Pole-Mounted Circuit Breaker is designed for reliable protection and switching in 12kV medium-voltage overhead distribution networks. Featuring a sealed SF6 insulated chamber, it provides efficient arc extinction and stable interruption performance under various outdoor conditions, including high humidity, coastal environments, and mountainous areas.
With fast reclosing capability, low maintenance requirements, and dependable fault isolation performance, the LW58-12 is suitable for utility distribution systems, rural power networks, and outdoor applications where reliable operation and long service life are required.
Application Scenarios
The LW58-12 SF6 Pole-Mounted Circuit Breaker is designed for reliable switching and fault protection in 12kV medium-voltage outdoor distribution networks. Its sealed SF6 insulation system, fast reclosing capability, and compact pole-mounted structure make it suitable for various utility and industrial power applications.
Typical applications include:
- Rural and Urban Distribution Feeders
Provides dependable protection and switching control for overhead distribution lines, helping improve power supply reliability and reduce outage impact. - Renewable Energy Grid Connections
Suitable for solar and wind power output systems, supporting safe switching, fault isolation, and stable integration of distributed energy resources. - Pole-Mounted Grid Automation Systems
Can be integrated into automated distribution networks for sectionalizing, remote operation, and improved fault management. - Substation and Tap Line Backup Switching
Provides reliable switching performance for feeder branches, backup power circuits, and outdoor distribution equipment.
Compliance Standards
The LW58-12 can be manufactured to meet relevant international and national standards, including:
- IEC 62271-100
- GB 1984-2014
- IEEE C37.60 (for remote-controlled configurations)
Technical Data
| Item | Unit | Parameter | |
| Rated Voltage | kV | 12 | |
| Rated Current | A | 630 / 1250 | |
| Rated Frequency | Hz | 50/60 | |
| Rated Short Circuit Breaking Current | kA | 20 | |
| Rated Short-Time Withstand Current (4s) | 20 | ||
| Rated Peak Withstand Current | 50 | ||
| Closing Time | ms | ≤ 60 | |
| Mechanical Life | Times | ≥10000 | |
