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

496 of 999+
  • RS Stock No. 654-744
  • Mfr. Part No. A9TDFD616
Each
£429.96(exc. VAT)
  • RS Stock No. 181-8471
  • Mfr. Part No. AD20
1 Box of 20
£265.91(exc. VAT)
  • RS Stock No. 357-936
  • Mfr. Part No. BDL46045LU
Each
£497.19(exc. VAT)
  • RS Stock No. 746-8131
  • Mfr. Part No. 2CDS271001R0101 S201M-D10
Each
£20.27(exc. VAT)
  • RS Stock No. 120-720
  • Mfr. Part No. 169026 NZML2-ME140-SVE
Each
£1,492.83(exc. VAT)
  • RS Stock No. 177-5067
  • Mfr. Part No. 2CSF202199R1800 F202 A-80/0,03 110V
Each
£204.93(exc. VAT)
  • RS Stock No. 630-832
  • Mfr. Part No. N090540Q
1 Box of 10
£5.59(exc. VAT)
  • RS Stock No. 246-2454
  • Mfr. Part No. 2CCS561001R1024
Each
£63.93(exc. VAT)
  • RS Stock No. 782-3706
  • Mfr. Part No. FX0327
Each
£5.48(exc. VAT)
  • RS Stock No. 229-069
  • Mfr. Part No. 15.5CAVH1E
1 Pack of 5
£900.03(exc. VAT)
  • RS Stock No. 230-1210
  • Mfr. Part No. 15624
Each
£15.06(exc. VAT)
  • RS Stock No. 732-0083
  • Mfr. Part No. 4 115 55
Each
£128.21(exc. VAT)
  • RS Stock No. 275-0220
  • Mfr. Part No. IEGZX11-1-62-15.0-AG-G3-V
1 Box of 5
£367.36(exc. VAT)
  • RS Stock No. 275-0416
  • Mfr. Part No. M39019/02-218
1 Box of 3
£2,204.64(exc. VAT)
  • RS Stock No. 255-927
  • Mfr. Part No. 265877 NZMH2-4-A250
Each
£1,845.24(exc. VAT)
  • RS Stock No. 246-2628
  • Mfr. Part No. 2CCS573001R0014
Each
£136.48(exc. VAT)
  • RS Stock No. 255-1659
  • Mfr. Part No. 140G-H-TC3H
Each
£45.26(exc. VAT)
  • RS Stock No. 272-0741
  • Mfr. Part No. 174578 XMPIX2X16W-C-H500W1000
Each
£54.71(exc. VAT)
  • RS Stock No. 236-6564
  • Mfr. Part No. 1SDA068041R1 DCL EKIP G-LS/I IN=160A XT
Each
£476.37(exc. VAT)
  • RS Stock No. 498-155
  • Mfr. Part No. 1137053
Each
£427.06(exc. VAT)
Results per page