Vacuum Circuit Breaker

How to Choose Liyond Vacuum Circuit Breaker Types

As a leading vacuum circuit breaker manufacturer, Liyond offers a truly comprehensive range of VCB breakers meticulously designed for optimal performance and safety in diverse indoor power distribution needs. Our extensive portfolio ensures you can select the perfect vacuum circuit breaker for your application. We provide various types of VCB breakers, each tailored to specific operational demands and technical requirements.

To help you understand the unique advantages of our extensive product lines and make an informed choice, here’s an overview of the different Liyond vacuum circuit breaker types and series we provide:

Key Considerations for Selecting and Ordering Vacuum Circuit Breakers

To ensure you choose the ideal Liyond VCB breaker for your project, consider these essential questions regarding your system’s requirements:

What are your electrical power demands?

Rated Voltage: Available common options include 12kV, 24kV, and 40.5kV.

Rated Current: Match the breaker’s rated current to your system’s maximum continuous current. Liyond offers options up to 4000A.

Breaking Capacity: Verify its short-circuit breaking capacity can safely interrupt potential fault levels. Capacities are available up to 50kA.

How will the VCB be physically integrated into your system?

Installation Type: Determine if you require a fixed or withdrawable type.

Mounting Options: Consider Liyond’s front-mounted or side-mounted designs. Side-mounted units offer specific upper or right outlet configurations for precise cabinet fit.

Pole Distance: Confirm the exact pole distance needed (e.g., 150mm, 210mm, 275mm). This ensures physical compatibility with your existing switchgear. Custom requirements can be discussed.

What are the environmental conditions and desired operational longevity?

Insulation Method: Select the appropriate insulation for your operating environment.

Embedded Pole: Ideal for harsh (dusty, humid) conditions.

Insulated Tube: Suitable for typical environments.

Operational Demands & Longevity: Evaluate key factors for long-term reliability:

Required frequency of switching.

Desired mechanical life (e.g., up to 10,000 operations for some models, or even 15,000+ operations for VSG Series).

Specific environmental conditions the breaker will face (e.g., temperature, altitude, pollution class).

Liyond’s comprehensive selection ensures you receive a precisely tailored VCB breaker solution. As a trusted vacuum circuit breaker supplier, we are dedicated to providing the ideal VCB for switchgear according to your specific requirements. Contact our technical team for personalized expert guidance.

Liyond Vacuum Circuit Breakers Video Introduction

VCB Vacuum Circuit Breaker Construction

The structures vary among different types of vacuum circuit breakers. In general, a vacuum type circuit breaker basically consists of a vacuum interrupter bottle, operating mechanism, insulation system, terminal connections, and auxiliary devices. These vacuum circuit breaker components work together to ensure reliable and safe operation of the VCB, making it a crucial component in modern power distribution systems. Liyond not only offers complete vacuum circuit breaker solutions, but also vacuum circuit breaker accessories and custom electrical switchgear.

Vacuum Circuit Breaker Working Principle

An electrical vacuum breaker works on the principle of arc quenching in a vacuum environment. When the power circuit breaker is working, an electric arc will be formed between the contacts due to the ionization of metal vapor. The arc is inside a sealed vacuum chamber where the vacuum environment has a high dielectric strength to withstand high voltages without breaking down. This efficient arc quenching mechanism enables vacuum type circuit breaker to reliably interrupt high currents, making them a popular choice for medium and high-voltage power distribution systems.