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

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  • RS Stock No. 218-8896
  • Mfr. Part No. 1694-DM2L2
Each
£29.00(exc. VAT)
  • RS Stock No. 249-119
  • Mfr. Part No. 3VA6610-6HM32-0AA0
Each
£4,417.48(exc. VAT)
  • RS Stock No. 200-015
  • Mfr. Part No. 2CDS271001R0488
Each
£33.25(exc. VAT)
Better World
  • RS Stock No. 219-8909
  • Mfr. Part No. KSA160ED4306
Each
£565.86(exc. VAT)
  • RS Stock No. 260-9363
  • Mfr. Part No. C103TM080
Each
£179.53(exc. VAT)
  • RS Stock No. 229-011
  • Mfr. Part No. CD33 FUSE CARRIER D3 E33 63A 500V
1 Pack of 30
£93.55(exc. VAT)
  • RS Stock No. 213-2566
  • Mfr. Part No. 5ST3665-1HG
Each (In a Pack of 10)
£26.068(exc. VAT)
  • RS Stock No. 218-8750
  • Mfr. Part No. 1492-SPM1C400-N
Each
£45.34(exc. VAT)
Better World
  • RS Stock No. 178-7875
  • Mfr. Part No. LV426912
Each
£25.32(exc. VAT)
  • RS Stock No. 125-094
  • Mfr. Part No. 178826 KLV-36HWS-F
Each
£148.77(exc. VAT)
  • RS Stock No. 852-7049
  • Mfr. Part No. MDA-12-R
Each
£1.19(exc. VAT)
Better World
  • RS Stock No. 211-0423
  • Mfr. Part No. KNB160ZFKP1
Each (In a Pack of 4)
£53.893(exc. VAT)
Better World
  • RS Stock No. 260-305
  • Mfr. Part No. 3VA6340-8KL41-0AA0
Each
£3,167.25(exc. VAT)
  • RS Stock No. 132-401
  • Mfr. Part No. 184189 IZMX-SH403-1
Each
£324.05(exc. VAT)
Better World
  • RS Stock No. 776-3492
  • Mfr. Part No. A9F74304
Each
£203.15(exc. VAT)
  • RS Stock No. 629-244
  • Mfr. Part No. 8GK4501-4KK21
Each
£44.12(exc. VAT)
  • RS Stock No. 237-5117
  • Mfr. Part No. 2CSR254101R1164
Each
£335.13(exc. VAT)
  • RS Stock No. 275-8816
  • Mfr. Part No. R9EXV
Each
£8.12(exc. VAT)
  • RS Stock No. 250-4204
  • Mfr. Part No. 1SDA054491R1
Each
£3,787.89(exc. VAT)
  • RS Stock No. 256-763
  • Mfr. Part No. 271425 NZMC2-M160
Each
£878.40(exc. VAT)
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