Outdoor High Voltage SF6 Circuit Breakers - 72.5kV to 252kV Range

Fenarro's outdoor SF6 circuit breakers provide superior circuit interruption and protection for high voltage transmission and distribution systems.

Designed to meet IEC 62271 standards, our breakers deliver reliable performance in extreme environmental conditions from -40°C to +55°C,

with altitudes up to 4000 meters. With breaking capacities up to 50kA, they ensure grid stability and equipment protection.

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Outdoor High Voltage SF6 Circuit Breakers Series

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Series Performance Overview

Built for Reliable High-Voltage

Switching & Protection

Fenarro outdoor SF6 circuit breaker families are designed for high-voltage power system control and protection, with multiple voltage classes and configurations for different project requirements.

Available Product Families

40.5 / 72.5 / 126 kV

Three outdoor SF6 circuit breaker families for different high-voltage

switching and protection requirements.

40.5 kV FLW8(A)-40.5

72.5 kV FLW36-72.5

126 kV FLW36-126

Rated Current

Up to 3150 A

High-current configurations are available for demanding transmission and distribution switching applications.

Short-Circuit Breaking Current

Up to 40 kA

The LW36-126 series provides rated short-circuit breaking current up to 40 kA for reliable fault interruption.

Mechanical Endurance

Up to 10000 ops

Selected LW36 series circuit breakers are designed for frequent operation with mechanical endurance up to 10,000 operations.

Technical Note

Electrical ratings and operating conditions vary by model. Final specifications should be confirmed according to the selected circuit breaker and project requirements.

Key Features for Outdoor High Voltage Vacuum Circuit Breakers

SF6 Three Series Comparison

Choose the Right SF6 Circuit Breaker

for Your Project

Compare Fenarro outdoor SF6 circuit breaker families by voltage class, rated current, breaking capacity and typical application requirements.

MAX. VOLTAGE

40.5 kV

Compact & Flexible

Outdoor SF6 Circuit Breaker

FLW8(A)-40.5

Rated Current Up to 3150 A

Breaking Current Up to 31.5 kA

Frequency 50 Hz

Suitable For

40.5kV power system control and protection where compact installation and flexible current-transformer configurations are required.

Compact Layout Optional CT Frequent Switching

View FLW8(A)-40.5 →

Frequent Operation

RATED VOLTAGE

72.5 kV

Reliable & Durable

Outdoor SF6 Circuit Breaker

FLW36-72.5

Rated Current 3150 A

Breaking Current 31.5 kA

Frequency 50 Hz

Suitable For

72.5kV power systems requiring reliable frequent switching, including substations, cold-region operation and tie-breaker applications.

-40°C Operation Frequent Switching Tie Breaker

View FLW36-72.5 →

RATED VOLTAGE

126 kV

High Breaking Capacity

Outdoor SF6 Circuit Breaker

FLW36-126

Rated Current 3150 A

Breaking Current 40 kA

Frequency 50 Hz

Suitable For

Higher-voltage transmission and substation projects requiring strong breaking performance, reliable insulation and operation under demanding outdoor conditions.

40 kA Breaking Class IV Pollution Outdoor Substation

View FLW36-126 →

Not sure which model fits your project?

Final selection depends on system voltage, rated current, short-circuit level, environmental conditions and project configuration requirements.

Contact Fenarro →

Application Scenarios

Transmission Substations

Fenarro SF6 circuit breakers provide main protection for 110kV-220kV transmission substations, ensuring grid reliability and preventing cascading failures.

Renewable Energy Integration

Specifically designed for wind farm and solar plant grid connection points, offering reliable protection for intermittent power generation.

Long-Distance Transmission Lines

Ideal for sectioning and protecting extended transmission networks, reducing outage areas during fault conditions.

Industrial Power Systems

Suitable for large industrial complexes and mining operations requiring high reliability circuit protection.

Engineering Reliability Highlights

Engineered for Reliable Outdoor Operation

From operating mechanisms and SF6 interruption technology to environmental adaptability and structural protection, Fenarro outdoor circuit breakers incorporate engineering features designed to support reliable long-term operation in demanding power systems.

Fenarro Outdoor High Voltage SF6 Circuit Breaker

Outdoor SF6 Circuit Breaker

Designed for Demanding Outdoor Power Applications

SP Across Series

Spring-Operated Mechanism

Spring operating mechanisms provide a streamlined mechanical structure with low operating power and reliable switching performance for repeated operation.

SF6 FLW36 Series

Self-Blast Interruption

FLW36 circuit breakers use SF6 as the arc-extinguishing and insulating medium together with self-blast interruption technology for dependable fault breaking.

ENV Selected LW36 Models

Harsh Environment Adaptability

Selected FLW36 configurations are designed for ambient temperatures down to -40°C and Class IV pollution conditions, supporting reliable outdoor operation in demanding environments.

CR FLW36-126

Corrosion-Resistant Construction

The FLW36-126 incorporates an integrally formed steel chassis, hot-dip galvanized components and a stainless-steel mechanism enclosure for improved outdoor durability.

ENGINEERING FOCUS Reliability from mechanism to environment

Reliable Switching

Insulation Performance

Outdoor Adaptability

Structural Durability

FAQs About Fenarro's Outdoor High Voltage SF6 Circuit Breakers

Q What is the expected service life of your SF6 breakers?

A Minimum 25 years with proper maintenance according to our service guidelines.
Q Can your breakers integrate with existing SCADA systems?

A All our breakers support standard communication protocols including IEC 61850 and Modbus.
Q Do you provide SF6 gas handling training?

A Yes, we offer comprehensive training programs for safe gas handling and maintenance.
Q What is the typical delivery time for SF6 circuit breakers?

A Standard products: 8-12 weeks; Custom configurations: 12-16 weeks
Q How to confirm payment?

A We accept payment methods such as wire transfer and PayPal. Other payment methods are also acceptable, please contact us before making payment through other methods. Additionally, a 30% deposit is feasible, and the balance should be paid before shipment.

Outdoor High Voltage SF6 Circuit Breakers - 72.5kV to 252kV Range

Outdoor High Voltage SF6 Circuit Breakers Series

Series Performance Overview

Built for Reliable High-Voltage

Switching & Protection

Key Features for Outdoor High Voltage Vacuum Circuit Breakers

SF6 Three Series Comparison

Choose the Right SF6 Circuit Breaker