12KV Vacuum Circuit Breaker

As a professional high-voltage electrical equipment manufacturer established in 1968, Sunway Hanguang incorporates over fifty years of experience into its product design. Through rigorous quality control and advanced processes, it has created the ZN63-12(VS1), VCB205, and other series of 12KV Vacuum Circuit Breakers, compatible with mainstream switchgear types and meeting the needs of various medium-voltage power distribution scenarios, demonstrating the strength of a long-established manufacturer. The products comply with IEC, GB, and other standards, possessing excellent arc extinguishing capabilities, strong environmental adaptability, intelligent operation and maintenance, and environmentally friendly characteristics. With over 500,000 units installed and stable operation in over 800 projects worldwide, achieving a customer satisfaction rate of 99.6%, it is the preferred equipment for medium-voltage power distribution.

Core Product Features

1. Excellent arc extinguishing performance, safe and stable operation

The 12KV Vacuum Circuit Breaker uses a high-purity Cu-Cr contact vacuum interrupter, with a vacuum degree of ≤1.33×10⁻³Pa and a current interruption value of <3A, achieving arc-free interruption and suppressing operating overvoltage. After over 100,000 full-capacity interruption tests and 30 years of accelerated aging tests, it has operated without failure for over 15 years in the field, with an MTBF of over 30 years and a failure rate of <0.005%.

2. Robust insulation structure, wide environmental adaptability

The sealed poles are integrally encapsulated with epoxy resin APG, providing strong resistance to creepage, pollution, and condensation, and are suitable for Class IV pollution environments. It can withstand high altitudes (customizable up to 4000 meters), high humidity, and temperature differences from -45℃ to +85℃. Having passed vibration and electromagnetic interference tests, it can operate stably in harsh conditions such as mines and coastal areas.

3. Reliable Operating Mechanism, Fast Response Speed

Equipped with a spring energy storage operating mechanism, supporting AC, DC, and manual control, with closing time ≤60ms and opening time ≤40ms. It features anti-reclosing and self-locking functions, enabling rapid protection and automatic reclosing, suitable for frequent operation scenarios.

4. Intelligent and Scalable Design, Controllable Operation and Maintenance Costs

Multiple monitoring modules are available, supporting mainstream communication protocols for access to the operation and maintenance platform, enabling predictive maintenance. The fully enclosed structure requires no maintenance for 30 years, reducing costs by over 80%. The modular design facilitates quick replacement and tool-free maintenance.

5. Environmentally Compliant Certification, Global Market Adaptability

Oil-free and SF6-free emissions, complying with IEC 62271-306 environmental standards. It has passed numerous international and domestic authoritative tests and certifications, with optional global universal certifications, ensuring compliance in major markets and adapting to various power grid standards.

6. Rigorous Quality Control System, Comprehensive Service Guarantee

Each product undergoes 20 factory inspections and generates a unique electronic file for traceability. A 10-year warranty is provided, with 7x24 hour response from 120 global technical centers, ensuring a positive customer experience.

Product Parameters

Wide Range of Application Scenarios

1. Power Systems

Suitable for power distribution network projects and substation renovations of companies such as State Grid, performing excellently in high-altitude projects in China, meeting stringent insulation and stability requirements.

2. New Energy Sector

Applied in wind power, photovoltaic power plants, and energy storage systems, adapting to extreme outdoor environments and contributing to efficient grid connection of clean energy.

3. Industrial and Rail Transit Scenarios

Suitable for complex working conditions such as mines and petrochemicals, and rail transit traction substations, withstanding strong vibrations and wide temperature ranges, ensuring continuous power supply.

4. Infrastructure and Special Scenarios

Widely used in critical locations such as urban power distribution networks and data centers, as well as offshore platforms. The brand's dedicated factory can provide customized solutions for special scenarios.

5. Overseas Supporting Scenarios

Providing supporting services for companies such as ABB and Siemens, supporting multi-language services, and exported to Europe, the Middle East, and other regions, adapting to global power grid standards.

Why Choose Us?

As a manufacturer with over fifty years of experience in the high-voltage electrical field, Sunway Hanguang utilizes advanced technology, stringent quality control, and comprehensive service to create 12KV Vacuum Circuit Breakers that offer both performance and environmental advantages. From product development to production and delivery, from on-site installation to after-sales maintenance, we provide professional support to our customers throughout the entire process, contributing to the safe, efficient, and environmentally friendly operation of global power distribution systems.