What is a low voltage circuit breaker?

Low-voltage circuit breaker refers to the general term for circuit breakers mainly used to protect wiring and equipment in low-voltage circuits below AC600V and DC750V.

Low-voltage circuit breaker include: wiring circuit breakers (MCCB), earth leakage circuit breakers (ELCB), low-voltage air circuit breakers (ACB), and equipment circuit breakers (CBE).