What is Fault Current Limiter (FCL)?

What is Fault Current Limiter (FCL)?

A Fault Current Limiter (FCL) is a protective device used to limit excessive fault current during short circuit conditions without interrupting the normal operation of the system.

As power systems grow larger and more complex fault levels can exceed the withstand capacity of switchgear and other equipment.

Why FCL is used?

To keep fault current within safe limits and avoid damage to essential equipment like

circuit breakers,

transformers and

busbars.

Advantages of FCL

Reduces stress on electrical equipment.

Enhances system safety and reliability.

Minimizes damage during fault conditions.

Helps avoid costly upgrades of high-rated switchgear.

Improves overall protection coordination.