Products Description
Our 11 kv breaker is an outdoor high-voltage protection device specially designed for 11kV medium-voltage power distribution systems. Adopting advanced vacuum arc extinguishing technology, it can quickly and safely interrupt normal load current, overload current and short-circuit current, providing reliable protection and control for power systems. As a professional manufacturer with 30 years of in-depth experience in the high-voltage electrical industry, our 11 kv breakers have been widely used in power engineering projects in many countries and regions around the world, and have won recognition and long-term cooperation from internationally renowned brands such as Schneider and Siemens with excellent performance and stable quality.
This 11 kv breaker adopts a fully sealed structure design, and its shell is made of corrosion-resistant stainless steel. It can operate stably in extreme temperature environments from -40℃ to +70℃, and has excellent waterproof, dustproof and salt spray resistance properties, making it particularly suitable for use in harsh outdoor environments. The vacuum arc extinguishing chamber uses imported high-quality copper-chromium alloy contact materials, with a mechanical life of more than 20,000 times and an electrical life of more than 10,000 times, truly realizing maintenance-free operation and greatly reducing customers' operating costs. Compared with traditional oil circuit breakers and SF6 circuit breakers, our 11 kv breaker contains no harmful substances and has zero greenhouse gas emissions, making it a truly environmentally friendly power equipment.
Application Fields
- Urban and rural power grid renovation projects: Suitable for sectional protection and control of 11kV overhead distribution lines
- Power supply systems for industrial and mining enterprises: Provide reliable power protection for industrial users such as factories, mines and oil fields
- Substations and power distribution rooms: Used as 11kV outgoing line switches and bus sectional switches
- New energy power stations: Grid-connected protection for new energy power stations such as wind power and photovoltaic power generation
- Infrastructure construction: Power guarantee for important infrastructures such as railways, airports, ports and expressways
- Special environment applications: Power systems in areas with special climatic conditions such as plateaus, coastal areas and deserts

Key Technical Parameters
|
Parameter Item |
Technical Index |
|
Rated Voltage |
12kV |
|
Rated Frequency |
50Hz/60Hz |
|
Rated Current |
630A / 1250A |
|
Rated Short-Circuit Breaking Current |
20kA / 25kA |
|
Rated Short-Circuit Making Current |
50kA / 63kA |
|
Rated Short-Time Withstand Current (4s) |
20kA / 25kA |
|
Rated Peak Withstand Current |
50kA / 63kA |
|
Mechanical Life |
≥20,000 times |
|
Electrical Life |
≥10,000 times |
|
Operation Mode |
Electric / Manual |
|
Protection Grade |
IP65 |
|
Compliant Standards |
IEC 62271-100, GB1984-2014 |
Quality Control
We have established a quality management system of "full participation, whole-process control and full traceability", and each 11 kv breaker must undergo a strict 100% full inspection before leaving the factory. Our quality inspection team consists of more than 30 professional and technical personnel, and is equipped with advanced testing instruments such as 10kV primary and secondary integrated complete equipment test system, high and low temperature test chamber, partial discharge tester and lightning impulse test equipment, to conduct comprehensive inspections on core dimensions such as product appearance integrity, mechanical properties, electrical parameters, accessory completeness and label compliance.
We fully support and accept product inspection by third-party testing/inspection institutions with legal qualifications, and can cooperate with the whole-process inspection services including factory supervision, production process inspection and full performance inspection before delivery. All product inspection results are recorded in detail and systematically archived to achieve full-process traceability, ensuring that each 11 kv breaker delivered to customers fully meets the technical standards and quality requirements agreed in the contract.
Factory Strength
We are the supporting unit of Henan Engineering Technology Research Center for Intelligent High-Voltage Sensors, with a professional R&D team composed of more than 50 senior engineers, and have obtained more than 100 national patents in the field of high-voltage electrical engineering. The factory covers an area of more than 200 mu, with a construction area of more than 80,000 square meters and more than 400 existing employees. It has modern production workshops and internationally advanced production and testing equipment, with a monthly production capacity of 1,000 complete machines.
As a Henan Green Factory, we have established a perfect quality management system and environmental management system in strict accordance with international standards, and implement strict control over every link from raw material procurement to finished product delivery. We not only provide customers with standardized 11 kv breaker products, but also have mature and rich full-cycle OEM&ODM service experience, and can carry out customized production according to the technical drawings or prototypes provided by customers to meet the personalized needs of different customers.
After-Sales Service
We provide a perfect "Three Guarantees" warranty service. All 11 kv breaker products have a one-year warranty for the whole machine and lifetime technical support. The after-sales service work is led by the Quality Assurance Department, and the Technical Department will provide collaborative support when technical problems are involved, providing customers with timely and reliable service guarantee.
We have established a 24-hour rapid response mechanism, and customer feedback will be processed within 24 hours. We provide original genuine parts supply and professional maintenance services, and maintenance parts enjoy quality assurance. At the same time, we regularly follow up with customers, collect improvement suggestions and continuously improve service quality. For overseas customers, we also provide remote technical support and on-site installation and commissioning guidance to ensure that products can be quickly deployed and operate stably.
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