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

440 of 999+
  • RS Stock No. 237-5061
  • Mfr. Part No. 2CSR253001R1065
Each
£248.30(exc. VAT)
Better World
  • RS Stock No. 221-1272
  • Mfr. Part No. LV432621
Each
£264.89(exc. VAT)
  • RS Stock No. 117-315
  • Mfr. Part No. FP 1100
Each
£245.18(exc. VAT)
Better World
  • RS Stock No. 156-855
  • Mfr. Part No. 3VA2325-7HM32-0AA0
Each
£1,483.65(exc. VAT)
Better World
  • RS Stock No. 160-709
  • Mfr. Part No. 3RV2321-1CC20
Each
£67.61(exc. VAT)
Better World
  • RS Stock No. 270-3599
  • Mfr. Part No. 3VA2010-8HL36-0AA0
Each
£661.72(exc. VAT)
  • RS Stock No. 259-4498
  • Mfr. Part No. 1SDA072710R1
Each
£8,091.24(exc. VAT)
  • RS Stock No. 123-293
  • Mfr. Part No. 170746 FRBMM-C20/3/01-A
Each
£160.74(exc. VAT)
  • RS Stock No. 299-785
  • Mfr. Part No. 5SJ4315-7HG41
Each
£278.36(exc. VAT)
Better World
  • RS Stock No. 260-579
  • Mfr. Part No. 3VA6340-5JP41-0AA0
Each
£2,303.47(exc. VAT)
  • RS Stock No. 275-0288
  • Mfr. Part No. IUGN66-1-61-10.0
1 Box of 5
£460.44(exc. VAT)
  • RS Stock No. 203-1995
  • Mfr. Part No. 3NA3830-6
Each (In a Pack of 3)
£26.463(exc. VAT)
Better World
  • RS Stock No. 248-3695
  • Mfr. Part No. A9R15263
Each
£308.87(exc. VAT)
  • RS Stock No. 289-1617
  • Mfr. Part No. 2CSB202001R3400
Each
£85.25(exc. VAT)
  • RS Stock No. 225-6100
  • Mfr. Part No. 2CSF202101R0160 F202 A-16/0.01
Each
£160.10(exc. VAT)
  • RS Stock No. 270-3018
  • Mfr. Part No. C228461
Each
£15.25(exc. VAT)
  • RS Stock No. 782-3721
  • Mfr. Part No. 3402.0040.11
Each (In a Pack of 10)
£0.729(exc. VAT)
  • RS Stock No. 216-4816
  • Mfr. Part No. 8GK4501-0KK22
Each
£90.36(exc. VAT)
  • RS Stock No. 435-370
  • Mfr. Part No. 2CCG001221R0001
Each
£289.81(exc. VAT)
  • RS Stock No. 183-3656
  • Mfr. Part No. 2CSB204001R3630
Each
£139.35(exc. VAT)
Results per page