MCB: Definition, Working Principles, Functions and TypesKOMPAS.com - If we observe electrical installations at home, we will find an elongated box-shaped device with an ON and OFF switch in the middle.This device is called MCB.MCB (Miniature Circuit Breaker) or in Indonesian, namely Miniature Circuit Breaker is a device used to limit electric current and safety when there is an overload.MCB works automatically to cut off the electric current when the current through it exceeds the nominal current on the MCB.There are various nominal currents on the MCB, including 1A, 2A, 4A, 6A, 10A, 20A, 25A, 32A and others.The nominal current is determined from the amount of current that can be delivered by the MCB.Quoted from the book Electric Motor (2017) by Faikul Umam, basically the disconnection of electricity by MCB comes from two principles, namely the principle of heat and the principle of electromagnetic.The principle of heat is used when the MCB disconnects the current due to overload.While the electromagnetic principle is used when the MCB detects a short circuit.Also read: Types of Electronic Components and Their FunctionsTo find out more, the following explains the working principle of the MCB.Quoted from the book Basic Electricity Installation (2020) by Lauhil Mahfudz Hayusman, the working principles of MCB are as follows:From the explanation above, it can be concluded that the functions of the MCB are:Also read: Getting to know the components of an electric circuit, types, and examples of their applicationThe following are the types of MCB based on their trip characteristics (cutting current):Write your comments with the hashtag #JernihBerkomentar and win e-vouchers for 90 winners!Get information and insight selected by Kompas.com editorsDouble check and complete your data.Your data will be used for account verification when you need assistance or when unusual activity is found on your account.Immediately complete your data to join the #JernihBerkomentar program.