What is the voltage range of a circuit breaker?

The range covers ratings from 800 to 6300 A in two different sizes. Circuit breakers automatically disconnect power when a short circuit fault is detected downstream or when the circuit becomes overloaded, exceeding the electrical cable current capacity.

What are the different types of circuit breaker sizes?

There are three types of circuit breaker sizes on a low voltage circuit starting with the smallest Miniature Circuit Breakers (MCB) to Moulded Case Circuit Breakers (MCCB) to Air Circuit Breakers (ACB) for large switchboards. Schneider Electric is the first choice for all your circuit breaker and equipment needs.

When do circuit breakers automatically disconnect power?

Circuit breakers also known as electric breakers automatically disconnect power when a short circuit fault is detected downstream or when the circuit becomes overloaded, exceeding the electrical cable current capacity.

What is a molded case circuit breaker?

Molded Case Circuit Breakers (MCCB) protect circuits between 16 amps to 3200 amps and are typically used as the main breaker in a switchboard or to power large equipment directly. Ideal for buildings or manufacturing sites where a higher demand for low voltage power is required.

What is a miniature circuit breaker (MCB)?

Miniature Circuit Breakers (MCB) protect circuits up to 125 amps and are used in the final distribution board for homes, offices, shops. They’re also used in larger switchboards where MCCBs or even ACBs are used.

What is an air circuit breaker (ACB)?

Air Circuit Breakers (ACB) protect circuits between 630 amps to 6300 amps and are typically used as the main breaker in a large switchboard or to power large equipment directly. Ideal for large buildings, manufacturing sites & infrastructure projects where a high demand for low voltage power is required.