What type of protection do circuit breakers provide?

Circuit breakers are crucial components in electrical systems, primarily designed to provide protection against overloads and short circuits. Overloads occur when electrical devices draw more current than what the circuits are rated for, which can lead to overheating and potentially cause fires. Circuit breakers are equipped with mechanisms that detect this excessive current and interrupt the circuit, thereby preventing damage.

In the case of a short circuit, which happens when there is a direct connection between the live conductors, leading to an unrestricted flow of current, circuit breakers respond by tripping almost instantaneously. This quick response is vital in safeguarding both the wiring and any devices connected to the circuit.

The other types of protection mentioned—low voltage protection, protection against electrical surges, and protection against electromagnetic interference—are not primary functions of circuit breakers. While they may involve related devices or systems, circuit breakers are specifically engineered to handle the risks associated with overloads and short circuits. This focused functionality is what makes them an essential safety feature in any electrical installation.