Fuse and circuit breaker replacement: when and why to act
A blown fuse or a circuit breaker that will not reset requires prompt intervention. These protective elements are essential for the safety of your electrical installation.
Signs requiring replacement
- Blackened or melted fuse
- Circuit breaker that refuses to reset
- Frequent tripping without apparent overload
- Circuit breaker that is hot to the touch
- Abnormal buzzing in the electrical panel
Common causes
- Circuit overload: too many appliances connected simultaneously
- Short circuit downstream of the fuse or circuit breaker
- Age: end-of-life components (ceramic fuses are obsolete)
- Undersized rating: protection undersized relative to the circuit
- Internal fault: worn tripping mechanism
Our intervention
- Diagnosis of the cause of the malfunction
- Verification of the entire protected circuit
- Replacement of the fuse or circuit breaker with a compliant model
- Upgrading if necessary (switching from fuse to circuit breaker)
- Functional test and NFC 15-100 compliance check
Fuse or circuit breaker: which to choose?
Modular circuit breakers have replaced the old fuses in modern installations. They offer several advantages:
- Simple resetting without cartridge replacement
- Better tripping precision
- Longer service life
- Compliance with the current NFC 15-100 standard
Prevention
- Never replace a fuse with a higher-rated model
- Have your panel modernised if you still have fuse holders
- Label each circuit on your electrical panel
- Test your RCDs every month
For any questions or additional information, you can reach us at 06 95 62 24 33, Monday to Friday from 9am to 6pm. Outside these hours, this line is reserved for emergencies, available 24/7.