SF6 Circuit Breaker Manufacturer in China
6 kV to 220 kV SF6 Circuit Breakers for Medium- and High-Voltage Power Systems
Baocheng Electrical presents SF6 circuit breaker configurations for medium- and high-voltage projects. Use the product range comparison to review 11 kV, 24 kV, 33 kV, 35 kV, 132 kV and 145 kV product classes. Product or nominal system voltage does not by itself establish equipment rated voltage (Ur). For the 11 kV configuration, 12 kV is listed for verification against the approved nameplate and datasheet. Select rated current, short-circuit breaking duty, insulation level, operating mechanism and site conditions together. Confirm the final configuration and applicable type-test evidence in the model-specific documents.
- Product definition: SF6 gas-insulated switching and protection equipment for medium- and high-voltage power systems.
- 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
6 kV to 220 kV
Current
630 A to 4000 A
Breaking
20 kA to 50 kA
Standard
IEC 62271-100
SF6 Circuit Breaker Models & Voltage Ratings
Compare SF6 circuit breaker options for medium- and high-voltage projects by rated voltage, rated current, short-circuit breaking capacity, and installation requirements.
SF6 circuit breaker for distribution feeder projects. Confirm the voltage rating, control requirements, and mounting arrangement against your network specification.
33 kV SF6 Circuit Breaker
33 kV SF6 circuit breaker for utility and industrial distribution projects. Match the rated current and short-circuit breaking capacity to your feeder requirements.
Gas Circuit Breaker
SF6 gas circuit breaker for 35 kV substation projects. Review the insulation level, operating duty, and installation requirements before final selection.
SF6 Gas Circuit Breaker
24 kV SF6 circuit breaker for medium-voltage distribution projects. Confirm the equipment configuration, connection arrangement, and available installation space before ordering.
SF6 Breaker
SF6 circuit breaker for 132 kV substation projects. Confirm the equipment rated voltage, insulation coordination, and short-circuit breaking duty against your system requirements.
Outdoor SF6 Circuit Breaker
145 kV outdoor SF6 circuit breaker for high-voltage substations. Review the rated current, operating sequence, and site conditions to match your project specification.
SF6 Circuit Breaker Technical Specifications
Key parameters including rated voltage, rated current, breaking capacity and electrical performance data.
SF6 Product Range — Selection Overview
Compare the configurations currently presented in this product range. System voltage and equipment rated voltage are different selection fields. Final insulation levels, operating duties, gas data and dimensions belong in the approved model-specific data sheet.
【待站长填写／核实：核对全系列系统电压／设备额定电压口径及各型号真实参数；本表为选型概览，不代表所有配置均由同一报告覆盖】
| Product voltage class | Equipment rated voltage, Ur | Continuous current | Breaking current | Model details / status |
|---|---|---|---|---|
| 11 kV | 12 kV | 630 A | 20 kA | View 11 kV specifications → |
| 24 kV | Confirm model rating | 630 A | 25 kA | 【待站长填写／核实：完成并绑定24 kV子页】 |
| 33 kV | Confirm model rating | 1600 A | 31.5 kA | 【待站长填写／核实：33 kV子页草稿审核发布后绑定】 |
| 35 kV | Confirm model rating | 2000 A | 31.5 kA | 【待站长填写／核实：完善35 kV Gas Circuit Breaker子页内容后绑定】 |
| 132 kV | Confirm model rating | 2000 A | 31.5 kA | 【待站长填写／核实：完成并绑定132 kV子页】 |
| 145 kV | Confirm model rating | 3150 A | 31.5 kA | 【待站长填写／核实：保留现有145 kV配置；补充并核实产品资料】 |
Product Range Catalog (PDF)
【待站长填写／核实：上传全系列Full Range Catalog PDF；填写版本日期并绑定下载按钮。文件未上传前不提供虚假下载链接】
For an individual model, use its product page to request the specification sheet, GA drawing, wiring diagram, IOM manual and matching test evidence.
Operating Principle and Mechanism Selection
SF6 provides insulation and supports arc interruption in the interrupting chamber. The operating mechanism supplies the motion needed to open and close the contacts. Spring-operated and permanent-magnet options, where available, must be evaluated against the offered model, control supply, operating sequence and maintenance requirements.
【待站长填写／核实：填写实际可供弹簧／永磁机构对应型号及资料；不要将可选机构描述为全系列标准配置】
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 equipment ratings from 6 kV to 220 kV for medium- and high-voltage 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 applicable power equipment standards, supporting engineering selection, installation, commissioning, and project execution.
Professional Technical Support
Provision of model selection, specifications, engineering solutions, and after-sales support to reduce procurement and operational risks.
SF6 Circuit Breaker Applications & Industries Served
Review typical SF6 circuit breaker applications and identify the voltage class, installation environment, and protection duty required for your project.
Substation
Indoor and outdoor medium- and high-voltage switchgear (6 kV to 220 kV) 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.
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.
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
【待站长填写／核实：上传ISO 9001可读PDF及验证链接；ISO 14001／45001仅在持有有效证书时补充，核对主体、范围和有效期】
LW6-12 kV Type Test Report
Third-party type-test documentation for an outdoor porcelain-clad SF6 high-voltage circuit breaker.
- Model: LW6-12 kV / 1600 A / 31.5 kA
- Report No.: 03401-23-10089H-S
- Test Category: Type Test
【待站长填写／核实：上传完整报告PDF、签发日期、实验室法定名称及认可查询链接；此报告不直接覆盖11 kV／630 A／20 kA配置】
LW8-40.5 kV Type Test Report
Third-party type-test documentation for outdoor high-voltage SF6 circuit breaker performance verification.
- Model: LW8-40.5 kV / 3150 A / 31.5 kA
- Report No.: 03401-23-10086H-S
- Test Category: Type Test
【待站长填写／核实：上传本型号完整报告PDF；填写签发日期、实验室及认可范围、有效查询／下载链接】
LW36-72.5 kV Type Test Report
Independent laboratory test documentation demonstrating product testing capability for higher-voltage SF6 breaker applications.
- Model: LW36-72.5 kV / 3150 A / 31.5 kA
- Report No.: 03401-23-10100H-S
- Test Category: Type Test
【待站长填写／核实：上传本型号完整报告PDF；填写签发日期、实验室及认可范围、有效查询／下载链接】
LW36-126 kV Type Test Report
Third-party type-test report for an outdoor high-voltage SF6 circuit breaker manufactured for power-grid applications.
- Model: LW36-126 kV / 3150 A / 31.5 kA
- Report No.: 03401-23-10098H-S
- Test Category: Type Test
【待站长填写／核实：上传本型号完整报告PDF；填写签发日期、实验室及认可范围、有效查询／下载链接】
SF6 Circuit Breaker Overview of Technical Review, Verification, and Project Delivery
For overseas EPC contractors, utility companies, distributors, and industrial power projects, the procurement of SF6 circuit breakers involves more than just confirming rated voltage and breaking capacity. Prior to final approval, a comprehensive review of technical documentation, manufacturing controls, inspection procedures, independent verification, and commercial delivery terms is essential. The following information serves as a reference and example for a project review framework.
Manufacturing and Factory Acceptance Testing (FAT)
Manufacturing and inspection activities should be scheduled in accordance with the agreed production and quality control plans. Critical processes may include incoming material inspection, component assembly, mechanical adjustments, wiring checks, gas system inspections, and final routine testing. If required by the project, a Factory Acceptance Test (FAT) may be arranged prior to shipment. Typical FAT activities cover mechanical operation, insulation performance, contact resistance, control and auxiliary circuits, interlocking functions, gas tightness, and other agreed-upon inspection items. Production photos and inspection records may also be compiled and archived as part of the project’s technical documentation.
Technical Review
Before confirming an order, the proposed SF6 circuit breaker configuration must be reviewed against the purchaser’s technical specifications and applicable IEC standards. Key aspects include system voltage, rated current, short-circuit breaking capacity, insulation levels, operating mechanisms, control voltages, and required accessories. Typical review documents include technical data sheets, dimensional drawings, wiring diagrams, nameplate details, routine test procedures, and project-specific compliance checklists. Any deviations or optional requirements should be clarified during the technical approval stage to minimize engineering changes after production begins.
Third-Party Verification
For projects requiring additional verification, independent inspection may be arranged against the agreed scope and schedule. Review each type-test report against the exact model, voltage, current and breaking duty. Factory certificates and test evidence should be checked independently.
【待站长填写／核实：填写真实检测实验室名称、报告范围及验证网址；KEMA／DEKRA标志仅在证据与使用授权核实后上传】
【待站长填写／核实：CNAS属于认可体系：填写出具报告的实验室法定名称、CNAS认可编号及认可范围；不能把CNAS写成检测实验室名称】
【待站长填写／核实：上传工厂FAT／例行试验流程、真实生产照片和检验记录；补充见证与验收要求】
Commercial and Project Delivery Terms
Commercial evaluations must consider not only equipment pricing but also the scope of delivery, packaging, technical documentation, inspection requirements, spare parts, shipping terms, warranty conditions, and the project schedule. Lead times are typically determined based on the confirmed technical configuration, quantities, testing requirements, and production scheduling. Export packaging and shipping documentation will be prepared in accordance with the agreed Incoterms and destination requirements.
Request an SF6 Project Quotation
Use the form below to share the required voltage class, current, breaking duty, quantity, destination and project schedule. Include the required drawings, standards and inspection scope for technical review.
【待站长填写／核实：表单上线检查：收件邮箱 sales@baochengelec.com；提交测试并确认邮件送达／后台记录，补充隐私政策链接】
SF6 Circuit Breaker FAQ - Technical & Purchasing Questions
Answers covering voltage range, OEM support, delivery time and required technical documents.
This page compares 11 kV, 24 kV, 33 kV, 35 kV, 132 kV and 145 kV product classes. Confirm the equipment rated voltage (Ur) against the selected model nameplate and approved datasheet; a nominal system voltage is not automatically the equipment rating. The 11 kV configuration lists 12 kV Ur pending document verification.
Type-test evidence applies only to the exact stated report models and ratings: LW6-12 / 1600 A / 31.5 kA; LW8-40.5 / 3150 A / 31.5 kA; LW36-72.5 / 3150 A / 31.5 kA; and LW36-126 / 3150 A / 31.5 kA. These reports do not by themselves establish coverage of the 11 kV / 630 A / 20 kA configuration.
OEM support can include nameplate, logo, rated parameters, terminals, control voltage, and document language.
Delivery timing depends on the approved model, quantity, customization, FAT scope, document approval, and destination.
The project document package should identify the exact model and may include a datasheet, GA drawing, wiring diagram, instruction manual, routine-test record, FAT record, and applicable type-test report.
Outdoor suitability must be confirmed against ambient temperature, altitude, humidity, pollution level, wind, ice, seismic duty, enclosure/IP requirement, and installation arrangement.
Provide the system nominal voltage, required equipment rated voltage, continuous current, short-circuit level, TRV/duty, frequency, installation type, ambient conditions, control voltage, operating sequence, and applicable standard. Also specify the required operating-mechanism type.
SF6 Circuit Breaker Technical Articles & Insights
Use these technical articles to understand operating principles, compare configurations, and prepare a more complete project specification before requesting a quotation.
What Is an SF6 Circuit Breaker? Complete Guide to SF6 Gas and High Voltage
What is an SF6 circuit breaker? Complete guide to SF6 gas, high-voltage operation and reliability. Request a quotation from Baocheng Electrical.
SF6 Circuit Breaker Working Principle Explained
SF6 Circuit Breaker Working Principle Explained — a clear guide from Baocheng Electrical engineers covering sf6 circuit breaker working principle. Learn the essentials, then request a quote for SF6 circuit breaker products.
SF6 Circuit Breaker Diagram: Parts & Structure
SF6 Circuit Breaker Diagram — a clear guide from Baocheng Electrical engineers covering sf6 circuit breaker diagram. Learn the essentials, then request a quote for SF6 circuit breaker products.