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The Miniature Circuit Breaker (MCB)

The Miniature Circuit Breaker (MCB)

The aim of this work is to present a basic introduction to the operation of the Miniature Circuit Breaker (MCB). This is a protection and switching element often used in electrical industrial installations. The paper intends to explain, in a very simple manner, the following aspects related to the MCB: Constituting elements and operation principles, Basic specifications, Characteristic curves, Types of MCB and Advantages/disadvantages. The work belongs to a collection that is devoted to describe basic switchgear devices used in Low Voltage electrical installations.

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