Close-up of electrical fusebox

Circuit Breakers / Safety Switches

3rd November 2016


Close-up of electrical fusebox

Fuses work on the principal of a large current melting the fuse wire. In some cases faults can occur in which the current may not be large enough to melt the fuse but enough to seriously harm the user of the electrical appliance. For protection against faults of this nature a circuit-breaker is used in place of a fuse.

Circuit-breakers offer the following advantages compared to fuses.

  • Circuit-breakers respond quicker than fuses.
  • Circuit-breakers are more reliable.
  • Circuit-breakers are more sensitive.
  • Unlike fuses which only operate once and need to be replaced a circuit-breaker can be reset.
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