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.

51028 Products showing for Fuses & Circuit Breakers

16 of 999+
  • RS Stock No. 265-0183
Each
£19.99(exc. VAT)
  • RS Stock No. 521-2567
Each (In a Pack of 5)
£4.594(exc. VAT)
Better World
  • RS Stock No. 231-9671
  • Mfr. Part No. 2CDS251001R1165 S201 B 16A - 10 KA
1 Box of 1
£16.38(exc. VAT)
  • RS Stock No. 426-3132
1 Pack of 5
£30.32(exc. VAT)
  • RS Stock No. 893-8543
Each
£144.51(exc. VAT)
  • RS Stock No. 668-6057
Each (In a Pack of 10)
£0.329(exc. VAT)
  • RS Stock No. 668-6048
Each (In a Pack of 10)
£0.321(exc. VAT)
  • RS Stock No. 700-0827
  • Mfr. Part No. EN25
Each (In a Pack of 4)
£7.355(exc. VAT)
  • RS Stock No. 265-0169
Each
£8.58(exc. VAT)
  • RS Stock No. 541-3445
  • Mfr. Part No. 0451005.MRL
Each (In a Pack of 10)
£0.70(exc. VAT)
  • RS Stock No. 413-484
  • Mfr. Part No. NSD6
1 Pack of 5
£39.44(exc. VAT)
  • RS Stock No. 849-6459
  • Mfr. Part No. EUC1P1B
Each
£7.91(exc. VAT)
  • RS Stock No. 412-554
  • Mfr. Part No. TDC180-2A
Each (In a Pack of 10)
£0.455(exc. VAT)
  • RS Stock No. 246-5128
  • Mfr. Part No. 3RV1915-1AB
Each
£8.82(exc. VAT)
  • RS Stock No. 864-4324
  • Mfr. Part No. 242209 PLSM-C32-MW
Each
£21.02(exc. VAT)
  • RS Stock No. 787-4136
  • Mfr. Part No. 0287020.PXCN
Each (In a Pack of 10)
£0.268(exc. VAT)
  • RS Stock No. 254-6253
  • Mfr. Part No. 188-K2C100
Each
£14.28(exc. VAT)
  • RS Stock No. 486-823
  • Mfr. Part No. 236101 PXL-D20/1
Each
£17.68(exc. VAT)
  • RS Stock No. 246-2480
  • Mfr. Part No. 2CCS571001R0205 S401M-B20
Each
£23.13(exc. VAT)
  • RS Stock No. 563-435
Each (In a Pack of 10)
£0.278(exc. VAT)
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