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.

50914 Products showing for Fuses & Circuit Breakers

316 of 999+
  • RS Stock No. 240-561
  • Mfr. Part No. 101340 PLI-C10/3N
Each
£140.31(exc. VAT)
Better World
  • RS Stock No. 772-1414
  • Mfr. Part No. 5SY4506-7
Each
£59.16(exc. VAT)
  • RS Stock No. 541-3647
  • Mfr. Part No. 0452003.MRL
Each (In a Pack of 10)
£1.685(exc. VAT)
  • RS Stock No. 191-4170
  • Mfr. Part No. SF-2410FP0375T-2
Each (On a Reel of 1000)
£0.694(exc. VAT)
  • RS Stock No. 122-9280
  • Mfr. Part No. 3400-P10-H-SI-2A
Each
£45.84(exc. VAT)
Better World
  • RS Stock No. 212-8888
  • Mfr. Part No. 5SY5120-7
Each
£37.82(exc. VAT)
  • RS Stock No. 922-6942
  • Mfr. Part No. 132680 FAZ-B6/1-NA
Each
£35.18(exc. VAT)
  • RS Stock No. 230-0960
  • Mfr. Part No. 177468 FAZ6-C15/3N
Each
£43.74(exc. VAT)
  • RS Stock No. 237-5092
  • Mfr. Part No. 2CSR253101R1635
Each
£350.54(exc. VAT)
  • RS Stock No. 269-8048
  • Mfr. Part No. 1157285
Each
£43.07(exc. VAT)
  • RS Stock No. 552-991
  • Mfr. Part No. 0324020.MXP
1 Bag of 100
£101.95(exc. VAT)
Better World
  • RS Stock No. 746-7942
  • Mfr. Part No. 2CDS254001R0631 S204-D63
Each
£207.94(exc. VAT)
  • RS Stock No. 221-3705
1 Bag of 5
£36.72(exc. VAT)
  • RS Stock No. 175-0365
  • Mfr. Part No. REX12-TA1-107-DC24V-3A
Each
£30.40(exc. VAT)
  • RS Stock No. 169-9387
  • Mfr. Part No. S500-8-R
1 Bag of 1000
£161.34(exc. VAT)
Better World
  • RS Stock No. 231-9771
  • Mfr. Part No. 2CDS274001R0204 S204M C 20A - 15 KA
1 Box of 1
£131.63(exc. VAT)
  • RS Stock No. 201-030
  • Mfr. Part No. 2CDS272337R0044
Each
£104.14(exc. VAT)
  • RS Stock No. 221-3655
Each
£14.64(exc. VAT)
  • RS Stock No. 202-7055
  • Mfr. Part No. 5SG5302
Each (In a Pack of 5)
£22.362(exc. VAT)
  • RS Stock No. 731-9679
  • Mfr. Part No. 4 076 92
Each
£114.48(exc. VAT)
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