Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

46578 Products showing for Fuses & Circuit Breakers

137 / 999+
  • RS Stock No. 186-3468
  • Mfr. Part No. 2CSS245102R0044 SN201 L C4-L
Each
MYR100.02
  • RS Stock No. 878-1583
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  • Mfr. Part No. FX0415
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MYR58.43
  • RS Stock No. 384-099
  • Mfr. Part No. 3101.0050
Each (In a Pack of 5)
MYR18.288
Better World
  • RS Stock No. 187-3287
  • Mfr. Part No. 5SV1316-7KK10
Each
MYR754.54
Better World
  • RS Stock No. 212-1613
  • Mfr. Part No. 2CDS251281R0204
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  • RS Stock No. 703-8471
  • Mfr. Part No. C22G80
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MYR21.539
  • RS Stock No. 123-606
  • Mfr. Part No. 170438 FRCMM-40/2/01-S/A
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MYR1,576.89
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  • Mfr. Part No. 278563 FAZ-C25/1
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MYR146.14
Better World
  • RS Stock No. 622-0109
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  • RS Stock No. 183-2856
  • Mfr. Part No. KV7109
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Better World
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  • Mfr. Part No. CEO40
Each
MYR187.42
Better World
  • RS Stock No. 791-3168
  • Mfr. Part No. A9F53120
Each
MYR195.25
  • RS Stock No. 123-652
  • Mfr. Part No. 170788 FRBMM-C16/2/003-A
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MYR652.88
  • RS Stock No. 314-4787
  • Mfr. Part No. 50-179-06/4A
Each (In a Pack of 5)
MYR44.256
Better World
  • RS Stock No. 221-0904
  • Mfr. Part No. GV2G472
Each
MYR171.45
  • RS Stock No. 769-0001
  • Mfr. Part No. 0215012.MXP
Each (In a Pack of 25)
MYR4.95
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