Electrical Engineering · Circuit Protection
What is the key functional difference between an electrical fuse and a circuit breaker?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A fuse is a purely mechanical switch, while a circuit breaker is strictly an electronic solid-state device.
- 2A fuse can be easily reset after melting, while a tripped circuit breaker must always be replaced with a new unit.
- 3A fuse is a sacrificial, one-time-use device, while a circuit breaker can be reset and reused after tripping.✓
- 4A fuse is used strictly for high-voltage systems, while a circuit breaker is used only for low-voltage systems.
Correct answer
A fuse is a sacrificial, one-time-use device, while a circuit breaker can be reset and reused after tripping.
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