10kV Vacuum Circuit Breaker (VCB) for 650mm Switchgear Panel – Indoor Medium Voltage Solution

The 10kV vacuum circuit breaker (VCB) is designed for indoor medium voltage switchgear systems, especially suitable for 650mm wide panels such as KYN28.

It is used for switching load current, overload current, and short-circuit current in power distribution systems. With advanced vacuum interrupter technology, this VCB ensures high reliability, strong breaking capacity, and long service life.

The product adopts a compact structure, making it ideal for integration into standard switchgear cabinets.

Working Principle

The vacuum circuit breaker operates by extinguishing the arc in a vacuum environment. When the contacts separate, the arc generated is rapidly quenched at the current zero point inside the vacuum interrupter.

This ensures fast interruption, high dielectric recovery, and reliable protection for 10kV medium voltage systems.

Key Features

l Designed for 10kV medium voltage applications

l Optimized for 650mm switchgear panels

l Vacuum arc extinguishing technology

l High breaking reliability and insulation strength

l Compact and modular design

l Suitable for frequent switching operations

l Maintenance-free or low maintenance

l Environmentally friendly (no SF₆ gas, no oil)

Main Components

l Vacuum interrupter

l Fixed and moving contacts

l Insulation support structure

l Conductive system

l Operating mechanism

Technical Advantages

l Fast arc extinction and stable performance

l Long electrical and mechanical life

l High insulation strength

l Reduced maintenance cost

l Safe and reliable operation

Applications

This 10kV indoor vacuum circuit breaker for 650mm switchgear is widely used in:

l Medium voltage switchgear systems

l Power substations

l Industrial power distribution

l Renewable energy projects (solar & wind)

l Infrastructure and utility networks