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.

50907 Products showing for Fuses & Circuit Breakers

596 of 999+
Better World
  • RS Stock No. 268-422
  • Mfr. Part No. 3VA6140-5JP41-0AA0
Each
£1,098.69(exc. VAT)
  • RS Stock No. 517-6859
  • Mfr. Part No. RUEF600
Each (In a Pack of 10)
£0.687(exc. VAT)
  • RS Stock No. 173-9840
  • Mfr. Part No. 4400.0025
Each (In a Box of 100)
£5.617(exc. VAT)
  • RS Stock No. 253-124
  • Mfr. Part No. 194711 KLV-PW-48-1PXL-1SPD-2PXF-16PLI
Each
£3,322.50(exc. VAT)
  • RS Stock No. 156-9061
  • Mfr. Part No. 200FM
Each
£49.91(exc. VAT)
  • RS Stock No. 341-549
  • Mfr. Part No. A9D27220
Each
£464.28(exc. VAT)
  • RS Stock No. 260-7759
  • Mfr. Part No. C16F3TM100
Each
£731.58(exc. VAT)
  • RS Stock No. 255-2313
  • Mfr. Part No. 401003
Each
£188.02(exc. VAT)
  • RS Stock No. 174-0693
  • Mfr. Part No. 1206L150/12SLYR
Each (In a Pack of 20)
£1.598(exc. VAT)
  • RS Stock No. 212-325
  • Mfr. Part No. KBC16DCF216
1 Pack of 10
£365.22(exc. VAT)
  • RS Stock No. 255-587
  • Mfr. Part No. 265769 NZMN4-VE800
Each
£3,874.15(exc. VAT)
  • RS Stock No. 174-0718
  • Mfr. Part No. 1206L050/15YR
Each (In a Pack of 20)
£0.327(exc. VAT)
  • RS Stock No. 212-225
  • Mfr. Part No. KBC16DCF226
1 Pack of 10
£365.22(exc. VAT)
  • RS Stock No. 627-120
  • Mfr. Part No. 8GK9601-4KK31
1 Pack of 10
£887.88(exc. VAT)
Better World
  • RS Stock No. 231-9666
  • Mfr. Part No. 2CDS251001R0405 S201 B 40A - 10 KA
1 Box of 1
£16.38(exc. VAT)
  • RS Stock No. 140-351
  • Mfr. Part No. 2CCS572001R0105
Each
£58.32(exc. VAT)
  • RS Stock No. 610-3414
  • Mfr. Part No. 2CSB203101R4250 - DDA203A-25/0,5
Each
£99.94(exc. VAT)
  • RS Stock No. 692-5071
  • Mfr. Part No. SF-1206S700-2
Each (In a Pack of 10)
£0.313(exc. VAT)
  • RS Stock No. 655-033
  • Mfr. Part No. LV833662SP
Each
£286.57(exc. VAT)
  • RS Stock No. 250-4131
  • Mfr. Part No. 1SDA054397R1
Each
£1,959.54(exc. VAT)
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