Hairui Electric High Voltage SF6 Circuit Breaker Supplier

High Voltage SF6 Circuit Breaker use sulfur hexafluoride gas for fast, reliable arc interruption and insulation in high-voltage substations. Hairui Electric supplies the LW8-40.5 (40.5kV), LW9-72.5 (72.5kV), LW36-126 (126kV), and LW-252 (252kV) series outdoor SF6 circuit breakers, with rated currents up to 4000A and breaking capacities up to 50kA, for utility grids, substations, and industrial power systems.

Why Choose Hairui Your SF6 Circuit Breaker Supplier

As a specialized High Voltage SF6 Circuit Breaker supplier and manufacturer in China, Hairui Electric has over 15 years of experience in high-voltage equipment and exports outdoor SF6 circuit breakers to utilities, EPC contractors, substation integrators, and distributors in 40+ countries. We combine IEC-standard engineering, flexible OEM/ODM capabilities, competitive pricing, and responsive after-sales support so your substation and grid projects are delivered on time and to specification.
  1. Rated Voltage Range: 40.5kV (LW8-40.5), 72.5kV (LW9-72.5), 126kV (LW36-126), and 252kV (LW-252) outdoor models for 35kV–220kV networks
  2. Rated Current & Breaking Capacity: 3150A–4000A rated current with 40kA/3s and 50kA short-circuit breaking performance per series
  3. Construction: Porcelain column and split-pole configurations with SF6 gas insulation and arc quenching for open-air substation installation
  4. Standards Compliance: Designed and tested in accordance with IEC 62271-100 and GB 1984 for safe, reliable network protection
High Voltage SF6 Circuit Breaker
Chinese Manufacturer 3150A Combined Reclosing Outdoor Hv Sulfur Hexafluoride Circuit Breakers (1)
LW9-72.5 outdoor SF6 circuit breaker with 3150A combined reclosing capability, 72.5kV rated voltage, and 40kA
High Breaking Capacity 4000A Outdoor Hv Sulfur Hexafluoride Circuit Breakers (1)
LW9-72.5 outdoor SF6 circuit breaker with 4000A rated current and 40kA short-circuit breaking capacity, designed
Lightning Impulse 350kv Outdoor Porcelain Column Hv Sulfur Hexafluoride Circuit Breakers (1)
LW9-72.5 outdoor SF6 circuit breaker with 350kV lightning impulse withstand voltage, 72.5kV rated voltage, and
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LW9-72.5 porcelain column type outdoor SF6 circuit breaker, 72.5kV rated voltage, 4000A rated current, 40kA
Outdoor Porcelain Pillar Type Rated Short Time 40ka Hv Sulfur Hexafluoride Circuit Breakers (1)
LW9-72.5 outdoor SF6 circuit breaker with 40kA short-time withstand current for 3 seconds, 100kA peak
252kv 50ka Short Circuit Breaking Capacity Durable Split Type Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker (1)
LW-252 split-type outdoor SF6 circuit breaker for 252 kV, 50 Hz systems, with 4000 A
Professional Precision Manufacturing 252kv Lightning Impulse Resistant Split Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker (1)
Precision manufactured LW-252 252kV outdoor SF6 circuit breaker with 1050kV lightning impulse withstand to earth,
High Quality 252kv Power Frequency Withstand Voltage Reliable Split Sf6 Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker (1)
High quality LW-252 252kV outdoor SF6 circuit breaker with 460kV power-frequency withstand voltage to earth,
Customized 252kv Rated Breaking Current Stable Performance Split Structure Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker (1)
Customized LW-252 252kV outdoor SF6 circuit breaker with stable breaking performance: 4000A, 50kA breaking, split
252kv 50Hz 4000A Split Type High Precision Outdoor High Voltage Sf6 Equipment Outdoor High Voltage Sulfur Hexafluoride Circuit Breaker (1)
252kV LW-252 split type outdoor SF6 circuit breaker with 4000A rated current, 50kA breaking, 125kA
40ka Short Circuit Capacity Premium Hv Sulfur Hexafluoride Circuit Breakers (1)
Premium LW36-126 SF6 circuit breaker with 40kA short-circuit breaking capacity, 126kV/3150A ratings, 40kA/3s withstand, high-speed
126kv High Voltage 3150A Rated Current Hv Sulfur Hexafluoride Circuit Breakers (1)
126kV LW36-126 outdoor SF6 circuit breaker with 3150A rated current for high-load transmission circuits, 40kA
Industrial Power Grid Protection Reliable Hv Sulfur Hexafluoride Circuit Breakers (1)
Reliable LW36-126 SF6 circuit breaker for industrial power grid protection: 126kV, 3150A, 40kA breaking, failure
403kaS Short Time Withstand High Precision Hv Sulfur Hexafluoride Circuit Breakers (1)
LW36-126 SF6 circuit breaker with 40kA/3s short-time withstand current, precise high-speed switching, 126kV/3150A ratings. Reliable
52Hz Rated Frequency Durable Power Distribution Hv Sulfur Hexafluoride Circuit Breakers (1)
52Hz rated frequency LW36-126 outdoor SF6 circuit breaker for power distribution networks: 126kV, 3150A, 40kA
126kv 3150A 40ka High Voltage CE Certified Hv Sulfur Hexafluoride Circuit Breakers
LW36-126 outdoor SF6 circuit breaker rated 126kV, 3150A and 40kA breaking capacity, with 40kA/3s withstand,
Hairui Electric

Can't find what you're looking for?

For decades, Hairui has been dedicated to helping numerous well-known enterprises and institutions customize reliable equipment. With strong production capabilities and professional expertise, we ensure that our equipment is fully compliant and meets your requirements.

Our Advantage

  • High Breaking Performance: SF6 arc-quenching technology delivers fast, reliable interruption of fault currents up to 50kA, protecting transformers, lines, and busbars.
  • Weatherproof Outdoor Design: Porcelain column and split-pole constructions are engineered for open-air substation service with stable dielectric performance and long service life.
  • Low Maintenance: Sealed SF6 interrupter units minimize moisture ingress and gas handling, reducing inspection and servicing requirements.
  • OEM / ODM Flexibility: Rated current, breaking capacity, control schemes, and accessories can be customized to your project specification.
  • International Compliance: Products are designed to IEC 62271-100 and GB 1984, with factory quality management to ISO 9001.
  • B2B Ready for Global Buyers: Competitive export pricing, bulk supply, private labeling, and complete export documentation for distributors and utilities.
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Start Your Power Engineering Project

Our technical consultants offer 24/7 online consultation to assist you through the entire process, from drawing design and equipment selection to installation guidance.

What types of HV SF6 circuit breakers does Hairui Electric supply?

We supply LW8-40.5 (40.5kV), LW9-72.5 (72.5kV), LW36-126 (126kV), and LW-252 (252kV) series outdoor SF6 circuit breakers, with rated currents up to 4000A and breaking capacities of 40kA–50kA, for 35kV–220kV substation and grid applications.

Can you provide OEM or customized SF6 circuit breakers?

Yes. We offer OEM/ODM for rated current, breaking capacity, operating mechanism, control voltage, and accessories, and can tailor products to your single-line diagram and site conditions.

Are your SF6 circuit breakers compliant with international standards?

Yes. Our HV SF6 circuit breakers are designed and tested in line with IEC 62271-100 and GB 1984, and the factory operates under ISO 9001 quality management.

Do you support bulk procurement and distributor programs?

Absolutely. We support utilities, EPC contractors, and distributors with bulk procurement, competitive B2B pricing, complete export documentation, and scheduled delivery.

Do you offer private labeling or white-label services?

Yes. Private labeling and white-label solutions are available so distributors and resellers can market our HV SF6 circuit breakers under their own brand.

Submit Request

+86-13809159818 Phone xl@hairuielectric.com E-mail Chat on WhatsApp WhatsApp