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

648 of 999+
  • RS Stock No. 277-5063
  • Mfr. Part No. P1RE1NC40AC030
Each
£100.03
  • RS Stock No. 253-680
  • Mfr. Part No. 269202 NZMH2-AF125-NA
Each
£1,128.40
  • RS Stock No. 738-2983
  • Mfr. Part No. 045202.5MRL
Each (In a Pack of 10)
£1.559
Better World
  • RS Stock No. 269-7080
  • Mfr. Part No. 3VA9133-0JB11
Each (In a Pack of 3)
£7.00
  • RS Stock No. 267-3436
  • Mfr. Part No. 70-010-04/5A
Each (In a Pack of 5)
£4.234
  • RS Stock No. 608-657
  • Mfr. Part No. 3NE8236-3MK
1 Pack of 3
£313.23
  • RS Stock No. 207-396
  • Mfr. Part No. A9D06820
Each
£166.42
  • RS Stock No. 125-1424
  • Mfr. Part No. 1492-SPM1B160
Each
£16.59
Better World
  • RS Stock No. 219-9077
  • Mfr. Part No. DF2FA80
Each (In a Pack of 10)
£25.745
  • RS Stock No. 140-608
  • Mfr. Part No. 2CCS892001R0081
Each
£125.07
Better World
  • RS Stock No. 236-7463
  • Mfr. Part No. 1SDA067731R1 XT2N 160 TMG 40A FF
Each
£337.89
  • RS Stock No. 210-2133
  • Mfr. Part No. ESX10-TB-101-DC24V-3A-E
Each
£82.11
  • RS Stock No. 250-8605
  • Mfr. Part No. LF312M
Each (In a Pack of 10)
£2.355
  • RS Stock No. 236-6638
  • Mfr. Part No. 1SDA068186R1 XT1 P FP HR
Each
£292.60
  • RS Stock No. 125-1450
  • Mfr. Part No. 1492-SPM3B630
Each
£92.24
  • RS Stock No. 227-0751
  • Mfr. Part No. 264310 PFGM-63/4/01-S
Each
£336.03
  • RS Stock No. 267-9378
  • Mfr. Part No. HAW569-DA2B
Each
£149.37
  • RS Stock No. 279-1650
  • Mfr. Part No. 811-314
Each
£21.32
  • RS Stock No. 213-2576
  • Mfr. Part No. 5ST3710-0HG
Each
£122.84
  • RS Stock No. 233-0590
  • Mfr. Part No. BK2-HTJ-608I
1 Box of 2000
£4,563.71
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