Fuse vs Circuit Breaker — Difference (with Table)
Fuse vs Circuit Breaker compared side by side — a 7-row comparison table and 4 key points. Class 10 Physics, free and no sign-up.
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TL;DR: Fuse vs Circuit Breaker compared side by side — a 7-row comparison table and 4 key points. Class 10 Physics, free and no sign-up.
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The main difference between Fuse and Circuit Breaker: Fuses and circuit breakers are safety devices that protect electrical circuits from overcurrent damage. A fuse works by melting when excess current flows,
Fuse vs Circuit Breaker — Comparison Table
| Basis | Fuse | Circuit Breaker |
|---|---|---|
| Operating Principle | Melts due to heat from overcurrent | Bimetallic strip bends due to heat or electromagnetic mechanism |
| Reusability | Must be replaced after each operation | Can be reset and reused multiple times |
| Response Time | Slower response to overcurrent | Faster automatic response |
| Cost | Cheaper per unit | More expensive initially |
| Maintenance | Requires frequent replacement | Requires occasional resetting |
| Safety | Visible when blown (easy to identify) | Needs testing to verify operation |
| Modern Usage | Older installations, still used in some places | Standard in modern buildings |
Key Points
- Fuse melts and breaks circuit; circuit breaker switches off automatically
- Fuse must be replaced; circuit breaker can be reset
- Circuit breaker is faster and more convenient but costlier
- Both provide protection against fire and electrical damage from overcurrent