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.

50958 Products showing for Fuses & Circuit Breakers

127 of 999+
  • RS Stock No. 779-9962
  • Mfr. Part No. OFAF000H50 1SCA022627R1210
Each
£5.07
Better World
  • RS Stock No. 221-1168
  • Mfr. Part No. LV429268
Each
£24.23
  • RS Stock No. 865-7370
  • Mfr. Part No. 0034.2516
Each (In a Pack of 10)
£0.866
  • RS Stock No. 701-8499
  • Mfr. Part No. 2CCA703152R0001 E215-16-11D
Each
£15.47
  • RS Stock No. 787-4362
  • Mfr. Part No. 0508.315MXP
Each
£6.72
  • RS Stock No. 177-8012
1 Box of 1000
£242.71
  • RS Stock No. 542-1244
  • Mfr. Part No. 02181.25MXP
Each (In a Pack of 10)
£0.938
  • RS Stock No. 228-599
  • Mfr. Part No. C14M32 CYLINDRICAL FUSE 14 x 51 32A AM 500V AC
1 Pack of 10
£15.37
  • RS Stock No. 782-7975
  • Mfr. Part No. W54-XB1A4A10-15
Each
£4.59
  • RS Stock No. 202-7105
  • Mfr. Part No. 5SJ4102-7HG41
Each
£62.38
  • RS Stock No. 541-4561
  • Mfr. Part No. 0216010.MXP
Each (In a Pack of 10)
£0.998
Better World
  • RS Stock No. 211-2327
  • Mfr. Part No. M9F21102
Each
£32.48
  • RS Stock No. 252-2153
Each (In a Pack of 50)
£0.263
Better World
  • RS Stock No. 221-1223
  • Mfr. Part No. LV431563
Each
£48.51
  • RS Stock No. 265-0182
Each
£21.28
  • RS Stock No. 783-3217
  • Mfr. Part No. 70-007-33/0.25A
Each (In a Pack of 10)
£0.804
  • RS Stock No. 226-0800
  • Mfr. Part No. 3951100000
Each (In a Pack of 10)
£1.151
  • RS Stock No. 221-3701
1 Bag of 5
£40.12
  • RS Stock No. 182-1491
  • Mfr. Part No. 250LMT
Each
£31.19
  • RS Stock No. 218-8795
  • Mfr. Part No. 1492-SPM2C050
Each
£44.09
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