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.

50907 Products showing for Fuses & Circuit Breakers

548 of 999+
  • RS Stock No. 183-3654
  • Mfr. Part No. 2CSB204001R3250
Each
£95.15(exc. VAT)
  • RS Stock No. 254-470
  • Mfr. Part No. 25NHG01BI NH FUSE 25A 500V GL/GG SIZE 01
1 Pack of 3
£19.42(exc. VAT)
Better World
  • RS Stock No. 237-3252
  • Mfr. Part No. 2CDS253103R0014
Each
£107.04(exc. VAT)
  • RS Stock No. 245-025
  • Mfr. Part No. A9D06840
Each
£167.75(exc. VAT)
  • RS Stock No. 375-9604
  • Mfr. Part No. Y216543
Each (In a Pack of 3)
£6.60(exc. VAT)
  • RS Stock No. 246-829
  • Mfr. Part No. 190837 FAZ-D16/4-NA
Each
£202.38(exc. VAT)
  • RS Stock No. 250-8605
  • Mfr. Part No. LF312M
Each (In a Pack of 10)
£2.355(exc. VAT)
  • RS Stock No. 282-6215
  • Mfr. Part No. PV-400A-3L-15
Each
£309.21(exc. VAT)
Better World
  • RS Stock No. 157-319
  • Mfr. Part No. 3VA2225-7HN42-0AA0
Each
£1,425.80(exc. VAT)
  • RS Stock No. 735-2800
  • Mfr. Part No. 3TX6546-3B
Each
£91.45(exc. VAT)
  • RS Stock No. 182-1364
  • Mfr. Part No. LPJ-90SP
Each
£253.48(exc. VAT)
  • RS Stock No. 178-1013
  • Mfr. Part No. S1019238 / BTIA55V2
Each (In a Pack of 10)
£6.591(exc. VAT)
Better World
  • RS Stock No. 806-7313
  • Mfr. Part No. A9R20225
Each
£308.70(exc. VAT)
  • RS Stock No. 825-5769
  • Mfr. Part No. P1MB2PD16
Each
£44.14(exc. VAT)
Better World
  • RS Stock No. 211-9632
  • Mfr. Part No. 5SV3316-3
Each
£573.00(exc. VAT)
  • RS Stock No. 250-4149
  • Mfr. Part No. 1SDA054420R1
Each
£3,311.58(exc. VAT)
  • RS Stock No. 287-9632
  • Mfr. Part No. 1250A-3S-230
Each (In a Box of 48)
£288.202(exc. VAT)
  • RS Stock No. 654-697
  • Mfr. Part No. EZ9EFLKIT16
Each
£41.85(exc. VAT)
  • RS Stock No. 169-9452
  • Mfr. Part No. S500-315-R
1 Bag of 1000
£189.88(exc. VAT)
  • RS Stock No. 260-8026
  • Mfr. Part No. C25V4TM125
Each
£2,560.13(exc. VAT)
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