24kv Vacuum Circuit Breaker

The 24kV Vacuum Circuit Breaker features an integrated layout, supports both manual and electric energy storage, and is easy to operate. The main circuit requires no additional maintenance. The vacuum interrupter is encapsulated using APG technology, providing protection against pollution and creepage, extending its service life, and reducing maintenance costs. It incorporates a comprehensive anti-misoperation interlocking mechanism to ensure equipment and personnel safety. The arc-extinguishing chamber maintains stable vacuum, with opening ≤50ms and closing ≤100ms, providing rapid response. It is compatible with various secondary control voltages to meet different power supply requirements.

The 24kV Vacuum Circuit Breaker is available in stationary and hand-operated models, compatible with various switchgear. Rated current ranges from 630A to 4000A, and short-circuit breaking current from 20kA to 50kA. Flexible selection based on user needs allows for adaptation to frequent operation scenarios. As a professional manufacturer, Usune leverages mature production processes, rigorous quality control, and comprehensive technical support to provide high-performance vacuum circuit breakers to global users. Furthermore, by utilizing experienced supplier resources, Usune achieves efficient supply chain collaboration, ensuring timely product delivery and stable quality.

Models of meaning

Core Technical Parameters

1.Basic Electrical Parameters

2. Key Structural Parameters

- Contact distance: 13±1mm;
- Overtravel: 3.5±0.5mm;
- Average opening speed: 0.9-1.2m/s;
- Average closing speed: 0.5-0.8m/s;
- Allowable wear thickness of moving and stationary contacts: ≤3mm;
- Main conductive circuit resistance: ≤60μΩ (630A), ≤55μΩ (1250A), ≤35μΩ (1600-2000A), ensuring stable conductivity.

3. Environmental Adaptability Parameters

Operating temperature: -15℃~+40℃; Daily relative humidity ≤95%, Monthly relative humidity ≤90%; Altitude ≤1000m (customizable for special altitudes); Seismic intensity ≤8 degrees; Suitable for locations free from dripping water, flammable and explosive materials, corrosive gases, and severe vibrations; adaptable to the climate of most parts of China.

Applicable Scenarios

The Usune 24kV Vacuum Circuit Breaker, with its superior performance, is widely used in the following scenarios, covering multiple fields such as power, industry, and infrastructure:

1. Power Plants and Substations: As the core control and protection equipment for power distribution circuits, it is used to cut off and close circuit currents, protecting critical equipment such as transformers and busbars from overload and short-circuit damage;
2. Industrial Enterprises: Suitable for high-voltage power distribution systems in industries such as metallurgy, chemical engineering, machinery manufacturing, and textiles, meeting the needs of frequent start-ups and shutdowns of production equipment and large load fluctuations;
3. Infrastructure: Used for high-voltage power distribution in urban rail transit, high-rise buildings, and commercial complexes, ensuring stable power supply and improving power reliability;
4. New Energy Field: Suitable for supporting power distribution systems of photovoltaic power plants and wind power plants, possessing good anti-interference capabilities and adapting to the load characteristics of new energy power generation.

Real-world Application Case Study

Case Study: High-Voltage Power Distribution System Upgrade Project in a Large Chemical Industrial Park

1. Project Background

The existing circuit breakers in the park suffered from insufficient reliability and high maintenance costs, necessitating an upgrade to 24kV Vacuum Circuit Breakers with high reliability, low maintenance, and compatibility with the corrosive chemical environment.

2. Solution

32 Usune hand-operated circuit breakers (1600A/31.5kA) were selected. Insulation structure was optimized for enhanced corrosion resistance. Installation guidance and technical training were provided to ensure on-time delivery.

3. Application Results

The equipment operated stably and without failure, reducing maintenance costs by 60%. It was compatible with existing switchgear, shortening the construction cycle. The park has designated Usune as a long-term partner.

Production and Supply Chain Assurance

1. Production Assurance

Usune possesses a modern factory, adhering to international and domestic standards. Each product undergoes rigorous factory testing, and a full-process quality traceability system has been established.

2. Supply Chain Assurance

Long-term cooperation with high-quality suppliers, using well-known brands for core components, and optimized supply chain management ensure on-time product delivery.

3. After-sales Service

We provide installation guidance, technical training, and troubleshooting services. Free repair and replacement of parts are offered during the warranty period, and lifetime technical support is provided after the warranty period.

Product Configuration and Ordering Instructions

1. Optional Configurations

- Operation Method: Manual + Electric Energy Storage (Standard);
- Protection Devices: Optional overcurrent, undervoltage/loss-of-voltage trip devices;
- Grounding Devices: Optional 650W, 800W, 1000W wide grounding solutions;
- Auxiliary Components: Optional anti-pumping relays, locking electromagnets, etc.

2. Ordering Information Orders must specify

Product model, installation method and quantity; rated parameters; optional configurations; secondary control voltage; spare parts and special requirements