
AC Power Electrical Power Substation 40.5kv Sf6 Gas Insulated Mv/Hv Auxiliary Circuit Breaker. SF6 Insulation Technology: Uses SF6 gas with advanced thermal expansion and pressure-assisted gas-blowing for arc-quenching. High Breaking Capacity: Rated short-circuit breaking current up to 31.5kA with 20 breaking times capability. Dual Operation Modes: Supports both manual and electric operation with spring operating mechanism. Comprehensive Safety Features: Includes anti-misoperation interlocks, SF6 low-pressure alarm, lockout, and pressure relief device. Low Leakage Rate: Annual leakage rate is guaranteed to be less than or equal to 0.5%. High Mechanical Endurance: Mechanical endurance up to 10,000 times for long-term reliable operation. Wide Application Scope: Suitable for power grids, substations, power plants, new energy, and industrial systems. Customizable Parameters: Rated current and short-circuit breaking current can be customized based on fuse requirements.