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

450 of 999+
  • RS Stock No. 225-5962
  • Mfr. Part No. 2CCF019642R0001 S804PV-SD125
Each
£599.69(exc. VAT)
  • RS Stock No. 259-3903
  • Mfr. Part No. 1SDA071932R1
Each
£44,159.43(exc. VAT)
  • RS Stock No. 246-952
  • Mfr. Part No. 073147 U-PKZ0(480V60HZ)
Each
£38.10(exc. VAT)
  • RS Stock No. 738-2898
  • Mfr. Part No. 0154.375DRT
Each (In a Pack of 10)
£3.287(exc. VAT)
  • RS Stock No. 177-8041
1 Box of 1000
£254.82(exc. VAT)
  • RS Stock No. 246-015
  • Mfr. Part No. 12BFGHA90
1 Pack of 3
£1,215.60(exc. VAT)
  • RS Stock No. 358-260
  • Mfr. Part No. KSB32CP15D
Each
£379.70(exc. VAT)
  • RS Stock No. 260-7787
  • Mfr. Part No. C16H42D160
Each
£1,543.18(exc. VAT)
Better World
  • RS Stock No. 236-6836
  • Mfr. Part No. 1SDA068586R1 XT4L 160 Ekip LSIG 40A FF
Each
£2,723.44(exc. VAT)
  • RS Stock No. 227-0724
  • Mfr. Part No. 267457 PFGM-40/4/003-A
Each
£93.59(exc. VAT)
  • RS Stock No. 221-5663
  • Mfr. Part No. 8040.2002.01
Each (In a Pack of 5)
£0.414(exc. VAT)
  • RS Stock No. 230-054
  • Mfr. Part No. 110877 NZMN3-4-VE630-AVE
Each
£4,043.37(exc. VAT)
  • RS Stock No. 148-548
  • Mfr. Part No. 3VA5125-6ED31-1AA0
Each
£263.68(exc. VAT)
  • RS Stock No. 242-939
  • Mfr. Part No. 187378 FRCMM-25/2/03-G/F
Each
£163.27(exc. VAT)
  • RS Stock No. 627-030
  • Mfr. Part No. 3NB1234-3KK20
1 Pack of 2
£178.87(exc. VAT)
  • RS Stock No. 262-976
  • Mfr. Part No. 32CML
1 Pack of 10
£39.17(exc. VAT)
  • RS Stock No. 258-302
  • Mfr. Part No. 281570 NZMN1-A20-NA
Each
£414.12(exc. VAT)
  • RS Stock No. 444-232
  • Mfr. Part No. BJL26035LU
Each
£350.97(exc. VAT)
  • RS Stock No. 286-4974
  • Mfr. Part No. 1SLM004100A1901
Each
£11.36(exc. VAT)
  • RS Stock No. 211-391
  • Mfr. Part No. 3164
Each
£100.89(exc. VAT)
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