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

59 of 999+
  • RS Stock No. 182-1831
  • Mfr. Part No. 80LR85
Each
£9.93
Better World
  • RS Stock No. 791-3455
  • Mfr. Part No. A9F55102
Each
£34.14
Better World
  • RS Stock No. 214-2067
  • Mfr. Part No. M9F11220
Each
£81.16
  • RS Stock No. 412-914
  • Mfr. Part No. TDC10-4A
Each (In a Pack of 10)
£0.383
  • RS Stock No. 535-869
  • Mfr. Part No. 1388391
Each
£30.92
  • RS Stock No. 230-1095
  • Mfr. Part No. 264690 PLG6-C2/1N
Each
£15.37
  • RS Stock No. 563-520A
Each (In a Pack of 100)
£0.28
  • RS Stock No. 122-3327
  • Mfr. Part No. 0034.9856
Each
£121.89
  • RS Stock No. 630-820
  • Mfr. Part No. J095573Q
1 Box of 10
£8.80
  • RS Stock No. 252-2194
Each (In a Pack of 50)
£0.149
  • RS Stock No. 204-7483
  • Mfr. Part No. Q82 A 140 05 100
Each
£4.35
Better World
  • RS Stock No. 790-9222
  • Mfr. Part No. A9D31832
Each
£148.47
  • RS Stock No. 207-2731
  • Mfr. Part No. 2906798
Each
£74.65
  • RS Stock No. 825-5558
  • Mfr. Part No. P1MB1PB16
Each
£16.72
Better World
  • RS Stock No. 187-3284
  • Mfr. Part No. 5SV1316-7KK02
Each
£140.63
  • RS Stock No. 240-6395
  • Mfr. Part No. CCPBR1010AC
Each
£34.64
  • RS Stock No. 409-867
  • Mfr. Part No. 1610-21-6A
Each
£10.82
  • RS Stock No. 377-0314
  • Mfr. Part No. C201873
Each (In a Pack of 5)
£2.16
  • RS Stock No. 783-3396
  • Mfr. Part No. 70-059-60/16A
Each (In a Pack of 10)
£0.573
  • RS Stock No. 225-5920
  • Mfr. Part No. 2CCF019601R0001 S802PV-SP25 - 5 kA
Each
£184.52
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