Circuit breaker in substation in Tanzania

What is a circuit breaker in a substation?

A circuit breaker in substation is a key component in electrical power systems, designed to interrupt the flow of electricity when a fault occurs, such as a short circuit or overload. Depending on system design, these devices can operate manually or automatically and come in various types, including air, vacuum, oil, and SF₆ gas.

What is a circuit breaker?

A circuit breaker is a device that is used to protect an electrical circuit from damage caused by overload or short-circuit. Circuit breakers are designed to interrupt the flow of current in an electrical circuit in the event of an overload or short-circuit.

What are the different types of circuit breaker?

The most common type is the air blast circuit breaker. These breakers use compressed air to extinguish an arc that has been created when the breaker is opened. Other types of circuit breakers include oil, vacuum, and solid state. There are different types of circuit breakers in substations.

What are the different types of MV circuit breaker?

There are three main types of medium voltage circuit breakers- air, oil, and SF6. Air circuit breakers use compressed air to extinguish the arc, while oil and SF6 circuit breakers use dielectric fluids to do the same. Oil circuit breakers have been around the longest, and were actually the first type of MV circuit breaker ever used.