Air Switch VS Vacuum Circuit Breaker

Air Switch

air switch VS vacuum circuit breaker

A Air Switch is a switch that automatically opens if the current in a circuit exceeds the rated current.

Air Switch is a crucial electrical device in low-voltage distribution networks and electric drive systems, integrating control and multiple protection functions.

In addition to contacting and disconnecting circuits, it also protects circuits and electrical equipment from short circuits, severe overloads, and undervoltages. It can also be used for infrequent motor starting.

Vacuum Circuit Breaker / vCB

vacuum circuit breaker vs air switch

A vacuum circuit breaker is compact, lightweight, suitable for frequent operation, and require no maintenance after arc extinguishing.

VCB is widely used in distribution networks. and it is indoor power distribution devices in 3-10 kV, 50 Hz three-phase AC systems.

Vacuum circuit breaker protecting and controlling electrical equipment in industrial and mining enterprises, power plants, and substations.

They are particularly suitable for applications requiring oil-free operation, minimal maintenance, and frequent operation.

VCB can be deployed in central cabinets, double-layer cabinets, and fixed cabinets to control and protect high-voltage electrical equipment.

air switches VS vacuum circuit breaker

1-Arc extinguishing media

Air switches: Air is used as the arc extinguishing medium, extinguishing the current by cooling the arc in the air.

Vacuum circuit breakers: A high vacuum environment is used as the arc extinguishing medium, interrupting the current by utilizing the insulating properties of the vacuum.

2-Application areas

Air switches: common used in homes, commercial, and light industrial settings.

Vacuum circuit breakers: commonly use in high-current applications such as substations and industrial distribution.

3- Breaking Capacities

Air switches : 4.5kA-10kA
Vacuum circuit breaker:10kA and above

4-Structures and Maintenance
Air switches have a simple structure and low cost, but require regular maintenance.
Vacuum circuit breakers have a small size, complex structure, long life, and require less frequent maintenance