Description

A vacuum contactor is a type of electrical switch used to control the flow of electricity in a circuit. It operates similarly to a circuit breaker but is optimized for repetitive operations in motor control, capacitor switching, and transformer switching.

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At the heart of a vacuum contactor is a vacuum interrupter, which consists of two or more contacts enclosed in a sealed vacuum bottle. When the contacts open, an arc is generated. However, because this arc occurs in a vacuum, it is quickly extinguished, preventing sustained electrical discharge and enabling rapid and clean interruption.