Fuses and circuit breakers are examples of which type of protective devices?

Fuses and circuit breakers are examples of which type of protective devices?

• A. Overcurrent protection devices
• B. Voltage regulation devices
• C. Ground fault protection devices
• D. Surge protection devices

Answer: (A)

Overcurrent protection is what fuses and circuit breakers provide. They are designed to interrupt current whenever it exceeds a safe level, protecting wiring and components from overheating and reducing fire risk. A fuse contains a metal element that melts open when the current is too high, while a circuit breaker trips on excessive current and can be reset after the fault is fixed. These devices specifically respond to overcurrent conditions, not to voltage regulation, ground-fault conditions, or voltage surges. Voltage regulation devices keep voltage within a range, ground fault protection devices detect leakage to ground to prevent shock, and surge protection devices clamp brief voltage spikes to protect equipment.

Overcurrent protection is what fuses and circuit breakers provide. They are designed to interrupt current whenever it exceeds a safe level, protecting wiring and components from overheating and reducing fire risk. A fuse contains a metal element that melts open when the current is too high, while a circuit breaker trips on excessive current and can be reset after the fault is fixed. These devices specifically respond to overcurrent conditions, not to voltage regulation, ground-fault conditions, or voltage surges. Voltage regulation devices keep voltage within a range, ground fault protection devices detect leakage to ground to prevent shock, and surge protection devices clamp brief voltage spikes to protect equipment.