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.

50915 Products showing for Fuses & Circuit Breakers

285 of 999+
  • RS Stock No. 815-3278
  • Mfr. Part No. SDSA3650
Each
£387.35(exc. VAT)
  • RS Stock No. 258-6383
  • Mfr. Part No. P-TCO-N450/12-2
Each (On a Reel of 3500)
£0.346(exc. VAT)
  • RS Stock No. 187-5231
  • Mfr. Part No. 5ST3777-0
Each
£182.30(exc. VAT)
Better World
  • RS Stock No. 790-8879
  • Mfr. Part No. A9F44163
Each
£28.92(exc. VAT)
  • RS Stock No. 267-3420
  • Mfr. Part No. 70-010-04/6.3A
Each (In a Pack of 5)
£4.28(exc. VAT)
  • RS Stock No. 703-3934
  • Mfr. Part No. 12TXLEJ200
Each
£525.96(exc. VAT)
  • RS Stock No. 825-5753
  • Mfr. Part No. P1MB2PD04
Each
£50.99(exc. VAT)
  • RS Stock No. 665-7374
  • Mfr. Part No. 3413.0214.22
Each (In a Pack of 10)
£0.442(exc. VAT)
  • RS Stock No. 191-4549
  • Mfr. Part No. SF-2410FP0062T-2
Each (On a Tape of 10)
£4.11(exc. VAT)
  • RS Stock No. 273-2274
  • Mfr. Part No. 140MT-C-AFAR01A10
Each
£14.05(exc. VAT)
  • RS Stock No. 237-6211
  • Mfr. Part No. 1SDA067013R1 XT2N 160 TMD 32A FF
Each
£274.60(exc. VAT)
  • RS Stock No. 273-2405
  • Mfr. Part No. 140UT-D7D2-B50
Each
£137.04(exc. VAT)
  • RS Stock No. 339-304
  • Mfr. Part No. SE10B120
Each
£24.02(exc. VAT)
  • RS Stock No. 769-0010
  • Mfr. Part No. 021501.6MXP
Each (In a Pack of 25)
£1.534(exc. VAT)
  • RS Stock No. 284-6376
  • Mfr. Part No. C6RG2-16
1 Box of 6
£25.99(exc. VAT)
  • RS Stock No. 226-0368
  • Mfr. Part No. 7542000
Each
£99.56(exc. VAT)
  • RS Stock No. 729-2708
  • Mfr. Part No. 1410-G111-P2F1-S01-1.5A
Each
£10.82(exc. VAT)
  • RS Stock No. 220-4753
  • Mfr. Part No. 1492-SPM3B320
Each
£62.75(exc. VAT)
  • RS Stock No. 167-4470
  • Mfr. Part No. MF-PSMF010X-2
Each (On a Reel of 3000)
£0.254(exc. VAT)
Better World
  • RS Stock No. 746-7801
  • Mfr. Part No. 2CDS254001R0164 S204-C16
Each
£155.20(exc. VAT)
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