ISO9001 · Factory Direct
SF6 Circuit Breaker Manufacturer & Supplier
Product Overview
6KV-252KV SF6 Circuit Breaker for Medium Voltage Power Systems
- Product definition: SF6 gas insulated medium-voltage switching and protection equipment.
- Usage: substations, feeder protection, renewable energy collection and industrial distribution.
- Advantages: compact structure, reliable breaking performance, low maintenance and long service life.
SF6 Circuit Breaker Selection Guide
Voltage
6KV⋯⋯252KV
Current
630A⋯⋯4000A
Breaking
25kA⋯⋯50kA
Standard
IEC 62271-100
SF6 PRODUCT RANGE
SF6 Circuit Breaker Models & Voltage Ratings
Compare indoor, outdoor, pole-mounted and GIS-compatible SF6 circuit breakers for different voltage and project requirements.
Additional information
| Rated Current | 630A |
|---|---|
| Rated Voltage | 12KV |
| Rated Short-Circuit Breaking Current | 25KA |
| Installation Type | Indoor |
| Applicable Standard | IEC 62271-100 |
Outdoor model for overhead lines, feeder switching and utility distribution networks.
Additional information
| Rated Current | 630A |
|---|---|
| Rated Voltage | 12KV |
| Rated Short-Circuit Breaking Current | 25KA |
| Installation Type | Indoor |
| Applicable Standard | IEC 62271-100 |
Customized SF6 breaker module for GIS-compatible and OEM applications.
Additional information
| Rated Current | 1250A, 630A |
|---|---|
| Rated Voltage | 12KV, 24KV |
| Rated Short-Circuit Breaking Current | 20KA, 25KA |
| Installation Type | Indoor |
| Applicable Standard | IEC 62271-100 |
Medium-voltage breaker for substations and renewable energy collection systems.
Additional information
| Rated Current | 630A |
|---|---|
| Rated Voltage | 12KV |
| Rated Short-Circuit Breaking Current | 25KA |
| Installation Type | Indoor |
| Applicable Standard | IEC 62271-100 |
Heavy-duty breaker for high-capacity medium-voltage power distribution projects.
Additional information
| Rated Current | 630A |
|---|---|
| Rated Voltage | 12KV |
| Rated Short-Circuit Breaking Current | 25KA |
| Installation Type | Indoor |
| Applicable Standard | IEC 62271-100 |
High-voltage circuit breaker for 132 kV substation power systems.
Additional information
| Rated Current | 630A |
|---|---|
| Rated Voltage | 12KV |
| Rated Short-Circuit Breaking Current | 25KA |
| Installation Type | Indoor |
| Applicable Standard | IEC 62271-100 |
Weather-resistant outdoor equipment for demanding utility and industrial projects.
Technical Specs Table
SF6 Circuit Breaker Technical Specifications
Key parameters including rated voltage, rated current, breaking capacity and electrical performance data.
| Rated Voltage | Rated Current | Rated Short-Circuit Breaking Current | Lightning Impulse Withstand Voltage | Mechanical Endurance(operations) | Annual SF6 Gas Leakage Rate |
|---|---|---|---|---|---|
| 6–12 kV | 630A | 25kA | 85kV | 10,000 | ≤0.1% |
| 15–24 kV | 1250A | 31.5kA | 145kV | 10,000 | ≤0.1% |
| 27.5–33 kV | 1600A | 31.5kA | 215kV | 10,000 | ≤0.5% |
| 35–40.5 kV | 2000A | 31.5kA | 215kV | 10,000 | ≤0.5% |
| 66–72.5 kV | 2500A | 31.5kA | 385kV | 5,000 | ≤0.5% |
| 110–132 kV | 3150A | 31.5kA | 550kV | 5,000 | ≤0.5% |
| 145 kV | 4000A | 40kA | 650kV | 5,000 | ≤0.5% |
| 252 kV | 4000A | 50kA | 950kV | 3,000 | ≤0.5% |
Features & Benefits
SF6 Circuit Breaker Advantages & Performance Features
Providing reliable, safe, and efficient high-voltage switching and protection solutions for substations, renewable energy facilities, railways, and industrial enterprises.
Reliable Insulation Performance
Excellent dielectric strength enhances high-voltage system safety and reduces the risk of flashovers and faults.
Superior Arc-Extinguishing Capability
Rapid arc extinction ensures stable switching operations and supports frequent switching and fault protection.
Low-Maintenance Design
Highly reliable sealing structure reduces leakage risks and maintenance costs while improving operational efficiency.
Wide Voltage Compatibility
Covers voltage ranges from 6kV to 145kV, meeting the needs of medium-voltage, high-voltage, and diverse power applications.
Long Service Life
Robust mechanical structure and high-quality materials ensure long-term stable operation and reduce total lifecycle costs.
High-Level Safety Protection
Comprehensive high-voltage protection design safeguards critical systems in substations, power plants, railways, and industrial facilities.
Standardized Design
Complies with power equipment standards, facilitating engineering selection, installation, commissioning, and project
Professional Technical Support
Provision of model selection, specifications, engineering solutions, and after-sales support to reduce procurement and operational risks.
Applications
SF6 Circuit Breaker Applications & Industries Served
Scenario keyword coverage for substations, distribution grids, industrial power and renewable projects.
Substation
Indoor and outdoor medium- and high-voltage switchgear (6kV–145kV) for main circuit switching and fault protection, ensuring reliable substation operation.
Solar Power Plants
High-voltage side protection for PV plants; handles renewable energy collection and disconnection; suitable for high-capacity grid-connected PV applications.
Thermal Power Plants
Manages auxiliary power and output distribution for power plants, as well as power supply for factories and mines; provides safe switching and protection for high-voltage circuits.
Power Distribution Networks
Used for feeder protection in public transmission and distribution grids; interrupts short-circuit faults to ensure stable power supply in urban and rural distribution networks.
Wind Farms
Used in conjunction with wind farm step-up substations to manage wind power collection, control, and fault isolation.
Energy Storage Power Stations
High-voltage grid connection for electrochemical energy storage projects; manages system switching (connection/disconnection) and provides safety protection against overloads and short circuits.
Quality Assurance & Product Testing
SF6 Circuit Breaker Certifications, Test Reports & Quality Documents
Verified quality-management and product-testing documentation supporting SF6 circuit breaker procurement, technical evaluation and EPC project qualification.
QUALITY MANAGEMENT CERTIFICATE
ISO 9001 Quality Management System
Quality-management certification covering manufacturing control, inspection procedures and continuous quality assurance.
- Certificate No.: 041026Q00257R001
Standard: GB/T 19001-2016 / ISO 9001:2015
Valid Until: April 01, 2029
- Certificate No.: 041026Q00257R001
12 kV SF6 Circuit Breaker
LW6-12kV Type Test Report
Third-party type-test documentation for an outdoor porcelain-clad SF6 high-voltage circuit breaker.
- Model: LW6-12kV / 1600-31.5
Report No.: 03401-23-10089H-S
Test Category: Type Test
- Model: LW6-12kV / 1600-31.5
40.5 kV SF6 Circuit Breaker
LW8-40.5 Type Test Report
Third-party type-test documentation for outdoor high-voltage SF6 circuit breaker performance verification.
- Model: LW8-40.5 / 3150A-31.5
Report No.: 03401-23-10086H-S
Test Category: Type Test
- Model: LW8-40.5 / 3150A-31.5
72.5 kV SF6 Circuit Breaker
LW36-72.5kV Type Test Report
Independent laboratory test documentation demonstrating product testing capability for higher-voltage SF6 breaker applications.
- Model: LW36-72.5kV / 3150-31.5
Report No.: 03401-23-10100H-S
Test Category: Type Test
- Model: LW36-72.5kV / 3150-31.5
126 kV SF6 Circuit Breaker
LW36-126kV Type Test Report
Third-party type-test report for an outdoor high-voltage SF6 circuit breaker manufactured for power-grid applications.
- Model: LW36-126kV / 3150-31.5
Report No.: 03401-23-10098H-S
Test Category: Type Test
- Model: LW36-126kV / 3150-31.5
FAQ Section
SF6 Circuit Breaker FAQ - Technical & Purchasing Questions
Answers covering voltage range, OEM support, delivery time and required technical documents.
12KV, 24KV and 40.5KV SF6 circuit breakers.12KV, 24KV and 40.5KV SF6 circuit breakers.12KV, 24KV and 40.5KV SF6 circuit breakers.12KV, 24KV and 40.5KV SF6 circuit breakers.
Yes, logo, ratings, terminals and documents can be customized.
Usually 20–40 days depending on quantity and configuration.
Datasheet, test report, certificate, manual and export documents.
Outdoor models are available with weatherproof enclosure and project configuration support.
Send voltage, rated current, breaking capacity, installation type and application scenario for model selection support.
Related Blog Posts
SF6 Circuit Breaker Technical Articles & Insights
Related article links increase dwell time and help explain working principle, model selection and comparison topics.
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