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.

51057 Products showing for Fuses & Circuit Breakers

575 of 999+
  • RS Stock No. 253-795
  • Mfr. Part No. 269221 NZMN2-A50-NA
Each
£518.71
  • RS Stock No. 218-8905
  • Mfr. Part No. 1694-PM11
Each (In a Pack of 4)
£49.46
  • RS Stock No. 212-8791
  • Mfr. Part No. 2800863
Each
£39.56
  • RS Stock No. 261-887
  • Mfr. Part No. EBV0023TV0
Each
£79.76
  • RS Stock No. 260-9385
  • Mfr. Part No. C104TM025
Each
£167.45
  • RS Stock No. 187-5180
  • Mfr. Part No. 5ST3653
Each
£23.99
  • RS Stock No. 272-2356
  • Mfr. Part No. 281944 CI-PKZ01-SVB-V
Each
£34.60
  • RS Stock No. 248-9891
  • Mfr. Part No. PIMT49
Each
£2,008.68
  • RS Stock No. 277-0720
  • Mfr. Part No. 3WA9111-0AD12
Each
£187.50
  • RS Stock No. 277-0922
  • Mfr. Part No. 3WA9111-0EK13
1 Set
£102.97
  • RS Stock No. 232-0251
  • Mfr. Part No. 1SDA067398R1 XT1C 160 TMD 125A FF
Each
£268.80
  • RS Stock No. 261-686
  • Mfr. Part No. TLM800
Each
£341.84
  • RS Stock No. 188-1623
  • Mfr. Part No. FB02A2P
Each
£32.60
  • RS Stock No. 893-7076
  • Mfr. Part No. FX0385/BK
Each (In a Pack of 5)
£10.662
  • RS Stock No. 261-901
  • Mfr. Part No. FNQ-R-8/10
1 Pack of 10
£446.79
  • RS Stock No. 328-445
  • Mfr. Part No. 5SM3318-6KK
Each
£266.14
  • RS Stock No. 251-348
  • Mfr. Part No. 20NHM000B-690
1 Pack of 3
£20.26
  • RS Stock No. 191-4577
  • Mfr. Part No. SF-2410FP016T-2
Each (On a Tape of 10)
£2.863
Better World
  • RS Stock No. 219-8416
  • Mfr. Part No. LV481001
Each
£650.50
  • RS Stock No. 237-3380
  • Mfr. Part No. 2CSR252001R1134
Each
£190.16
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