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
Fuses - PCB
Fuses - PCB

46580 Products showing for Fuses & Circuit Breakers

72 / 999+
  • RS Stock No. 210-6906
  • Mfr. Part No. 3NA6803-6
Each (In a Pack of 3)
MYR359.347
  • RS Stock No. 123-523
  • Mfr. Part No. 170217 FBSMV-40/3/003-A
Each
MYR488.46
  • RS Stock No. 130-442
  • Mfr. Part No. A9F75103
Each
MYR684.94
  • RS Stock No. 156-8759
  • Mfr. Part No. 10LCT
Each (In a Pack of 5)
MYR17.712
Better World
  • RS Stock No. 150-4181
  • Mfr. Part No. 5SU1354-6KK32
Each
MYR859.61
  • RS Stock No. 182-1743
  • Mfr. Part No. 50NHG01B
Each
MYR49.72
  • RS Stock No. 130-446
  • Mfr. Part No. A9D50220
Each
MYR3,232.40
  • RS Stock No. 521-2646
Each (In a Pack of 5)
MYR55.558
  • RS Stock No. 207-216
  • Mfr. Part No. EZ9E4MCU
Each
MYR601.81
  • RS Stock No. 188-1209
  • Mfr. Part No. 29370
Each
MYR168.07
Better World
  • RS Stock No. 124-7723
  • Mfr. Part No. 5SV3344-6KK12
Each
MYR855.92
Better World
  • RS Stock No. 188-4750
  • Mfr. Part No. GV5P150H
Each
MYR3,593.38
Better World
  • RS Stock No. 608-8214
  • Mfr. Part No. GV2G254
Each
MYR100.39
  • RS Stock No. 181-8910
  • Mfr. Part No. 20D27
Each
MYR13.24
  • RS Stock No. 521-4737
  • Mfr. Part No. 5SJ6110-6KS
Each
MYR91.50
  • RS Stock No. 266-3087
  • Mfr. Part No. 0 124 02
1 Box of 10
MYR154.77
  • RS Stock No. 152-949
  • Mfr. Part No. 3NA3244-4KK01
Each
MYR1,104.84
  • RS Stock No. 731-9449
  • Mfr. Part No. 4 067 71
Each
MYR276.58
  • RS Stock No. 254-6342
  • Mfr. Part No. C16F3
Each
MYR2,354.28
  • RS Stock No. 177-5091
  • Mfr. Part No. 2CSF204201R3630 F204 A S-63/0,3
Each
MYR1,686.34
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