What is relay and CB ?

Question

Accepted Answer

A relay is an electrically operated switch that uses an electromagnet to mechanically control the switching action. CB stands for Circuit Breaker, which is an automatic electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

Relay is an electrically operated switch
It uses an electromagnet to control the switching action
CB is short for Circuit Breaker
Circuit Breaker protects electrical circuits from damage
It automatically interrupts the flow of current in case of overload or short circuit

Accepted Answer

The Relay is a switching and sensing device, but the Circuit breaker is an isolating or disconnecting device. Relays operate on low power input voltage. ... The Relay is used to control or select one among many circuits, whereas Circuit Breaker is one per circuit. Relay acts an electrical amplifier for discrete signal.

What is relay and CB ?

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