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.

50914 Products showing for Fuses & Circuit Breakers

178 of 999+
Better World
  • RS Stock No. 202-7251
  • Mfr. Part No. 5SL4110-6
Each
£17.98(exc. VAT)
  • RS Stock No. 769-4719
  • Mfr. Part No. 239100 FAZ6-C6/2
Each
£57.20(exc. VAT)
Better World
  • RS Stock No. 187-3281
  • Mfr. Part No. 5SV1316-6KK10
Each
£101.90(exc. VAT)
  • RS Stock No. 787-4423
  • Mfr. Part No. 03453LS1H
Each
£2.59(exc. VAT)
  • RS Stock No. 337-7993
  • Mfr. Part No. 155.0892.6301
Each
£9.85(exc. VAT)
  • RS Stock No. 167-7112
  • Mfr. Part No. 70103450
Each (In a Pack of 10)
£1.301(exc. VAT)
  • RS Stock No. 769-3214
  • Mfr. Part No. SR-5-2-5A-BK
Each (In a Pack of 10)
£0.467(exc. VAT)
  • RS Stock No. 535-6033
  • Mfr. Part No. 2CDS271001R0405 S201M-B40
Each
£19.86(exc. VAT)
  • RS Stock No. 769-3750
  • Mfr. Part No. 05710007L
Each
£17.45(exc. VAT)
  • RS Stock No. 231-9933
  • Mfr. Part No. 2CSR255151R1164 DSE201 C16 A30
Each
£62.73(exc. VAT)
  • RS Stock No. 228-936
  • Mfr. Part No. CH141DU 1P 14x51 Fuse Holder
1 Pack of 6
£66.47(exc. VAT)
  • RS Stock No. 122-9303
  • Mfr. Part No. 3400-P10-H-SI-10A
Each
£45.84(exc. VAT)
  • RS Stock No. 413-816
Each (In a Pack of 10)
£4.373(exc. VAT)
  • RS Stock No. 182-1749
  • Mfr. Part No. SMD16
Each
£4.39(exc. VAT)
  • RS Stock No. 354-385
1 Pack of 5
£140.87(exc. VAT)
  • RS Stock No. 288-7711
  • Mfr. Part No. ESX10-S127-DC24V-1A-10A
Each
£115.77(exc. VAT)
  • RS Stock No. 259-4005
  • Mfr. Part No. 1SDA072064R1
Each
£2,111.36(exc. VAT)
  • RS Stock No. 123-6692
  • Mfr. Part No. 9000-41042-0100400
Each
£79.62(exc. VAT)
  • RS Stock No. 831-9169
  • Mfr. Part No. 1SDA067411R1 XT1N 160 TMD 32-450 3p F F
Each
£226.10(exc. VAT)
  • RS Stock No. 232-0122
  • Mfr. Part No. 1SDA054971R1 PB100 T4-T5-T7
Each
£37.92(exc. VAT)
Results per page