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.

50973 Products showing for Fuses & Circuit Breakers

659 of 999+
Better World
  • RS Stock No. 239-9979
  • Mfr. Part No. A9PA2316
Each
£147.88
  • RS Stock No. 169-9448
  • Mfr. Part No. BK/S506-1.25-R
1 Bag of 1000
£136.49
  • RS Stock No. 174-0837
  • Mfr. Part No. RF1182-000
Each (In a Pack of 20)
£0.191
  • RS Stock No. 181-8511
  • Mfr. Part No. 15KR85
1 Box of 20
£125.82
  • RS Stock No. 647-8241
  • Mfr. Part No. MF-NSMF012-2
Each (In a Pack of 10)
£0.256
  • RS Stock No. 229-221
  • Mfr. Part No. FNQ-8/10
1 Pack of 10
£421.28
Better World
  • RS Stock No. 211-9596
  • Mfr. Part No. 5SU1154-7KK06
Each
£142.54
  • RS Stock No. 256-100
  • Mfr. Part No. 266657 NZM2-XSR-R
Each
£168.37
  • RS Stock No. 506-999
  • Mfr. Part No. RGEF250
Each (In a Pack of 5)
£0.388
  • RS Stock No. 261-664
  • Mfr. Part No. MB-300178 AFDD-6/2/C/003-F
Each
£196.43
  • RS Stock No. 782-0909
  • Mfr. Part No. W28-XQ1A-2
Each
£6.56
  • RS Stock No. 854-8989
  • Mfr. Part No. LPJ-5SP
Each
£34.32
  • RS Stock No. 768-3750
  • Mfr. Part No. T331056
Each
£15.45
Better World
  • RS Stock No. 216-4784
  • Mfr. Part No. 5SY4604-7
Each
£146.03
  • RS Stock No. 703-2767
  • Mfr. Part No. 3404.2420.22
Each (In a Bag of 10)
£1.031
  • RS Stock No. 647-8572
  • Mfr. Part No. MF-R300
Each (In a Pack of 10)
£0.281
  • RS Stock No. 170-420
  • Mfr. Part No. 0912021
1 Pack of 10
£102.10
  • RS Stock No. 299-876
  • Mfr. Part No. 5SD7498-3
Each
£52.20
  • RS Stock No. 255-933
  • Mfr. Part No. 265919 NZMN4-4-AE1600/1000
Each
£10,147.96
Better World
  • RS Stock No. 245-640
  • Mfr. Part No. 3VA6210-6JT41-0AA0
Each
£2,061.00
Results per page