Import Ac Sf6 Circuit Breaker — Buy in wholesale FOB from Supplier in China

The LW252/4000-50 outdoor SF6 gas circuit breaker from Hubei Jucro Electric Co., Ltd. is a self-extinguishing AC breaker rated for 252kV maximum voltage, 4000A rated current, and 50kA breaking capacity. Designed for installation at elevations not exceeding 2000m, it employs sulfur hexafluoride gas as both arc-quenching medium and dielectric insulation material. The three-phase porcelain-pole with single interrupter structure incorporates a spring operating mechanism with inner connected mechanical action across all phases. Temperature compensation on the SF6 density controller maintains gas monitoring accuracy across ambient conditions from -30°C upward.

The breaker introduces self-extinction arc control technology with optimised contact movement design, yielding high insulation intensity and preventing re-ignition after breaking capacity current interruption. The spring mechanism requires low operating power while delivering mechanism reliability for frequent operation. A creepage distance ratio greater than standard requirements provides filth resistance and seismic withstand capability for atrocious weather environments. Temperature rise testing at 1.2 times rated current (4800A) confirms high carrying ability with contact temperature margin. The compact exterior enables more straightforward installation and commissioning compared to larger tank-type alternatives.

Primary applications include 252kV transmission substations, power distribution networks, and grid interconnection points where reliable fault interruption protects downstream equipment and maintains system stability. The unit is positioned as a domestic replacement for imported equivalents of equivalent voltage class. International buyers should verify IEC 62271-100 compliance for their destination market, confirm pole spacing dimensions for substation bay arrangements, and ensure SF6 gas handling certification aligns with local environmental regulations. Dirtiness grade IV suitability indicates operation in moderate pollution environments without additional insulation enhancement.

Hubei Jucro Electric Co., Ltd. is based in Daqiao Industrial Zone, Qiaobian Town, Dianjun District, Yichang 443009, Hubei Province, China. The supplier holds imported tier and harbor trust tier classification with a 0.00 response rate and zero recorded average response hours. No verified export history, international certification scope, or audited financial data is present in the available profile. The Yichang location in Hubei places it within China's central electrical equipment manufacturing belt, though this geographic factor alone does not confirm production scale or technical capability.

The company produces high voltage SF6 circuit breakers for power transmission and distribution applications, with the LW series representing its outdoor self-extinction breaker line. The listing presents detailed technical characteristics but does not state factory floor area, employee count, annual production volume, or installed base quantities. No information on R&D investment, patent portfolio, or participation in national grid projects is provided. Buyers should conduct direct due diligence on manufacturing quality control, type test certificates from accredited laboratories, and compliance with IEC 62271 series standards before contract commitment.