Relay Vs Circuit Breaker

In case of phase to ground faults high currents flow to the grounded neutral of the transformer.

Relay vs circuit breaker. The relay is a switching device which gives a signal to the circuit breaker as soon as the fault occurs in the power system. Therefore it can be put to use for satisfying requirements only. Relay vs circuit breaker. Difference between a battery and a capacitor a circuit breaker is a device which control make or break a circuit automatically manually or by remote control under normal and fault conditions like over current short circuit etc in circuit breaker electromechanical switch and relay mechanism trip the circuit when an unsafe value of current overload or short circuit attempts.

Power overloads and short circuits may cause equipment damage and sometime fire and human casualties. A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit. Relay is a protective device which senses the faulty conditions in a power system line and initiates the operation of circuit brea. Main differences between circuit breaker and relay.

Protective relays and circuit breakers must work together to isolate a fault. Earth fault relay senses these faults. Main difference relay vs. Relays and circuit breakers are devices used to stop currents flowing through circuits.

Relay is a device or switch that used to sense any fault in the power system and send the signal to the circuit breaker. A contactor energizes and de energizes a motor based on information from the motor starter control system. Fundamental difference is that relay is a sensing device where as circuit breaker is a fault interrupting equipment. A motor starter energizes and de energizes a motor using a contactor system of contactors or other means.

Usually the contacts of the earth fault relay are connected to the trip circuit of circuit breakers at the output side of the transformer. Its basic function is to interrupt current flow after a fault is detected or after it receives the signal from the relay. These relays are capable of sensing greater fault currents. A relay is a switch used as sensing and controlling device which makes and closes the contacts electronically or electromechanically.

Relay is also used as a protective device which sense the fault signal and sends to the circuit breaker which make decision to make or break the circuit based on the provided information by the relay. Whereas the circuit breaker is a device or switch that breaks the signal after the detection of any fault in the system. The main difference between relay and circuit breaker is that a relay is typically used as a switch in circuits with small currents whereas a circuit breaker is used to sense and stop large currents from flowing in circuits. However uncontrolled and unprotected electricity is very dangerous.

The detailed description of difference between relay and circuit breaker is described below. Circuit breaker breaks the circuit automatically when receives the signal from the relay.