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

60 of 999+
  • RS Stock No. 225-5920
  • Mfr. Part No. 2CCF019601R0001 S802PV-SP25 - 5 kA
Each
£184.52
  • RS Stock No. 825-5668
  • Mfr. Part No. P1MB2PB01
Each
£50.99
  • RS Stock No. 167-7538
  • Mfr. Part No. 0034.3111
Each (In a Pack of 10)
£0.381
  • RS Stock No. 630-876
  • Mfr. Part No. R090543Q
1 Box of 10
£5.33
  • RS Stock No. 847-3425
  • Mfr. Part No. 278755 FAZ-C8/2
Each
£63.55
  • RS Stock No. 232-0184
  • Mfr. Part No. 1SDA066433R1 AUX-C 2Q+1SY 250V XT1..XT4
Each
£85.30
  • RS Stock No. 624-0355
  • Mfr. Part No. 278561 FAZ-C16/1
Each
£22.85
  • RS Stock No. 458-8661
  • Mfr. Part No. 1180-01-0.5A
Each
£11.27
Better World
  • RS Stock No. 850-8644
  • Mfr. Part No. EZ9D16810
Each
£28.84
  • RS Stock No. 413-743
  • Mfr. Part No. 2313401
Each (In a Pack of 5)
£1.184
  • RS Stock No. 486-930
  • Mfr. Part No. 236053 PXL-C6/1
Each
£19.37
  • RS Stock No. 221-3711
1 Bag of 5
£34.73
  • RS Stock No. 847-3608
  • Mfr. Part No. 278775 FAZ-D4/2
Each
£74.76
  • RS Stock No. 219-6153
  • Mfr. Part No. 0154007.DR
Each (In a Pack of 10)
£1.001
  • RS Stock No. 228-629
  • Mfr. Part No. 25D27 FUSE-D2 25A T GL/GG 500VAC E27
1 Pack of 5
£4.56
Better World
  • RS Stock No. 539-8352
  • Mfr. Part No. 2CDS213001R0164 SH203-C16
Each
£55.91
  • RS Stock No. 188-7296
  • Mfr. Part No. L200754
Each (In a Pack of 10)
£2.263
  • RS Stock No. 270-3041
  • Mfr. Part No. G090534
Each (In a Box of 10)
£0.584
Better World
  • RS Stock No. 219-9052
  • Mfr. Part No. DF2CN04
Each (In a Pack of 10)
£8.504
  • RS Stock No. 541-4230A
  • Mfr. Part No. 0218.500MXP
Each (In a Pack of 100)
£0.231
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