126kv SF6 Outdoor Circuit Breaker

This SF6 gas-insulated outdoor high-voltage circuit breaker is widely used in State Grid substations, power plants, wind and solar step-up stations, mining power supply systems, and large-scale industrial facilities. Designed and manufactured in accordance with relevant IEC standards and technical specifications, it is suitable for high-voltage power transmission and distribution systems, substations, and large industrial power infrastructure.

This rugged SF6 gas-insulated outdoor circuit breaker utilizes sulfur hexafluoride (SF6) gas - which offers excellent insulation and arc-quenching capabilities - as its arc-extinguishing and insulating medium. In the event of system faults such as short circuits, it can rapidly interrupt fault currents. Thanks to the high dielectric strength and superior arc-quenching characteristics of SF6 gas, the circuit breaker quickly regains its insulating capacity after current interruption, thereby ensuring the safe and stable operation of the power system.

Featuring an optimized design for the arc-quenching chamber, insulation structure, and internal conductive components, the product is well-suited for dynamic grid operating conditions and meets stringent requirements for insulation withstand capability and short-circuit breaking performance in high-voltage systems. It is equipped with a spring operating mechanism that ensures reliable opening and closing operations; a well-designed mechanical linkage system guarantees synchronized action across all three phases, meeting the operational requirements for high-voltage switchgear in substations.

This rugged SF6 gas-insulated outdoor circuit breaker assembly utilizes a robust metal support frame for mechanical stability and high-strength porcelain insulators. These insulators feature a specialized structural design to meet external insulation requirements under specific pollution levels, making them suitable for environments characterized by dust, high temperatures, and other complex climatic conditions.

Users can select the appropriate model based on factors such as ambient temperature, altitude, pollution level, and grid technical specifications, ensuring the equipment meets all insulation, breaking, and mechanical operation requirements for long-term outdoor service.