Indoor High Voltage Vacuum Circuit Breaker

ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker, manufactured by China's Jinhand Electrical, is designed for 40.5kV/50Hz indoor applications. As a reliable factory and supplier, our product safely switches and interrupts load, overload, and short-circuit currents, ideal for frequent operations in power plants and substations, with international certifications ensuring global quality.

Advantages

1.High Voltage Compatibility：Designed for indoor use with a rated voltage of 40.5kV, suitable for various high-voltage applications.
2.Wide Application Range：Ideal for use in industrial and mining enterprises, power plants, and substations, enhancing operational flexibility.
3.Frequent Operation Capability：Particularly suited for scenarios requiring frequent operation, improving reliability in demanding environments.

MAIN TECHNICAL PARAMETERS

Main Features

1.Three-Phase Alternating Current：Operates effectively with three-phase AC at 50Hz, ensuring compatibility with standard electrical systems.
2.Load and Fault Current Switching：Capable of switching load current, overload current, and short-circuit current, providing comprehensive protection.
3.Indoor Installation：Specifically designed for indoor installation, protecting equipment from external environmental factors.

Product Highlights

1.High Voltage Level Application: Specifically designed for 40.5kV medium-high voltage systems, meeting the needs of power plants and large-scale industrial distribution.
2.Strong Interrupting Capability: Rated short-circuit breaking current up to 31.5kA, effectively cutting off various fault currents.
3.Frequent Operation Design: Mechanical life of 10,000 operations, optimized for applications requiring frequent operation.
4.Capacitor Bank Switching: Supports switching of single and back-to-back capacitor banks, suitable for reactive power compensation systems.
5.International Standard Certification: The product passes multiple international standard tests, meeting global power system requirements.

Production Process Advantages

1.Uses high-precision CNC machining centers to manufacture key components, ensuring dimensional accuracy and consistency.
2.Vacuum interrupters use internationally renowned brands, undergoing strict aging screening and X-ray inspections.
3.The assembly process takes place in a constant temperature and humidity environment to ensure stable insulation performance.
4.Each product undergoes complete type tests before leaving the factory, including temperature rise, mechanical characteristics, and insulation tests.

Innovative Design Highlights

1.Intelligent Buffer Mechanism: Uses hydraulic buffer technology to reduce opening/closing impacts and extend mechanical life.
2.Dual Insulation Design: Main circuit and operating mechanism use dual insulation isolation to enhance safety.
3.Modular Contact System: Supports online monitoring of contact wear for predictive maintenance.
4.Intelligent Interlock Device: Features comprehensive mechanical and electrical interlocks to prevent misoperations.
5.Wide Temperature Adaptation Design: Special materials and processes ensure stable operation under extreme temperatures.

Why Choose Us?

1.High Voltage Technology Expertise: Over 20 years of focus on R&D and manufacturing of circuit breakers for 40.5kV and above voltage levels.
2.End-to-End Quality Control: Implements full-process quality tracking and testing from raw materials to finished products.
3.Global Project Experience: Products have been applied in power plant and grid projects in over 30 countries.
4.Customization Service Capability: Supports personalized custom design for special parameters and environmental conditions.
5.Comprehensive Service System: Establishes a global service network, providing rapid response and technical support.

FAQ

Q1: What are the main application scenarios for 40.5kV circuit breakers?
A: Mainly used in medium-high voltage distribution applications such as the 35kV side of 110kV substations, main step-down stations in large industrial/mining enterprises, and power plant auxiliary power systems.
Q2: What does a mechanical life of 10,000 operations mean?
A: It means the circuit breaker can complete 10,000 opening/closing operations under normal operating conditions. At 2 operations per day, it can be used continuously for over 13 years.
Q3: Does it support intelligent upgrades?
A: Yes, it supports the addition of intelligent controllers for online monitoring of mechanical characteristics, electrical life assessment, and remote control functions.
Q4: What special conditions are required for installation?
A: Requires a level concrete foundation, standard installation space, and ventilation conditions. The ambient temperature is recommended to be controlled between -25°C and +40°C.

Loading & Shipment

We have established a professional logistics management system, using shockproof and moisture-proof packaging to ensure safe long-distance transportation. Supports various international trade terms and provides complete export documentation, inspection, and customs declaration services. Standard product delivery time is 45-60 days, with expedited channels available for urgent orders.

Contact us

Having developed for more than a decade, Jinhand is now among the top manufacturers and suppliers of electrical equipment in China. Our factory employs plenty of cutting-edge technologies and equipment, and we encourage you to order our premium, competitively priced China-made products.