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

341 of 999+
  • RS Stock No. 769-4615
  • Mfr. Part No. 239105 FAZ6-C25/2
Each
£52.94(exc. VAT)
  • RS Stock No. 893-8528
  • Mfr. Part No. 50-140-06/80A
Each
£25.53(exc. VAT)
  • RS Stock No. 229-187
  • Mfr. Part No. C14G16S CYL FUSE >STR >14 x 51 16A GG 500V AC
1 Pack of 10
£57.58(exc. VAT)
  • RS Stock No. 277-6238
  • Mfr. Part No. EEB08C506D0A
Each
£209.92(exc. VAT)
  • RS Stock No. 147-559
  • Mfr. Part No. 3VA5170-6EC31-1AA0
Each
£297.01(exc. VAT)
  • RS Stock No. 123-307
  • Mfr. Part No. 170803 FRBMM-B10/2/01-A
Each
£109.44(exc. VAT)
  • RS Stock No. 211-961
  • Mfr. Part No. A9N18492
Each
£92.73(exc. VAT)
  • RS Stock No. 117-311
  • Mfr. Part No. KV PC 9336
Each
£201.15(exc. VAT)
  • RS Stock No. 541-3287
  • Mfr. Part No. 251002.NRT1L
Each (In a Pack of 10)
£0.814(exc. VAT)
  • RS Stock No. 346-792
  • Mfr. Part No. BDF36045
Each
£575.44(exc. VAT)
  • RS Stock No. 490-024
  • Mfr. Part No. 236420 PXL-C6/3
Each
£82.41(exc. VAT)
  • RS Stock No. 176-9622
  • Mfr. Part No. 2CSF204592R4630 F204 B-63/0,5
Each
£1,094.19(exc. VAT)
  • RS Stock No. 288-7181
  • Mfr. Part No. C166TM125
Each
£213.79(exc. VAT)
  • RS Stock No. 275-3895
  • Mfr. Part No. 3NX1016
Each
£178.01(exc. VAT)
  • RS Stock No. 181-8562
  • Mfr. Part No. 35NZ02
Each (In a Box of 10)
£2.632(exc. VAT)
  • RS Stock No. 769-0026
  • Mfr. Part No. 0234002.MXP
Each (In a Pack of 25)
£0.934(exc. VAT)
  • RS Stock No. 448-3437
  • Mfr. Part No. K320169
Each
£38.46(exc. VAT)
  • RS Stock No. 229-271
  • Mfr. Part No. C14G10S CYL FUSE >STRIKER >14 x 51 10A GG 500V A
1 Pack of 10
£57.58(exc. VAT)
Better World
  • RS Stock No. 131-905
  • Mfr. Part No. 2CDS272001R0404 S202M-C40
Each
£57.58(exc. VAT)
Better World
  • RS Stock No. 210-3362
  • Mfr. Part No. 5SL4301-6
Each
£87.64(exc. VAT)
Results per page