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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Better World
  • RS Stock No. 622-0317
  • Mfr. Part No. 5SY7301-7
Each
£115.00(exc. VAT)
  • RS Stock No. 218-2896
  • Mfr. Part No. 3RT1966-4EA2
Each
£15.94(exc. VAT)
  • RS Stock No. 123-685
  • Mfr. Part No. 170850 FRBM6-B40/2/03-A
Each
£140.22(exc. VAT)
  • RS Stock No. 240-6385
  • Mfr. Part No. CCPBR0620AB
Each
£23.70(exc. VAT)
Better World
  • RS Stock No. 236-7549
  • Mfr. Part No. 1SDA067898R1 XT2H 160 Ekip I 63A FF
Each
£737.98(exc. VAT)
  • RS Stock No. 272-0178
  • Mfr. Part No. 3VA1563-7EF32-0AA0
Each
£1,835.26(exc. VAT)
  • RS Stock No. 232-0218
  • Mfr. Part No. 1SDA066818R1 XT1B 160 TMD 100A FF
Each
£318.49(exc. VAT)
  • RS Stock No. 123-590
  • Mfr. Part No. 170332 FRCMM-25/4/003-A
Each
£100.89(exc. VAT)
  • RS Stock No. 782-6597
  • Mfr. Part No. W28-XQ1A-4
Each
£3.79(exc. VAT)
  • RS Stock No. 377-0178
  • Mfr. Part No. J322169
Each
£36.71(exc. VAT)
Better World
  • RS Stock No. 236-6613
  • Mfr. Part No. 1SDA068142R1 XT4N 160 Ekip LS/I 40A FF
Each
£974.43(exc. VAT)
  • RS Stock No. 396-386
  • Mfr. Part No. 3NE1022-0
Each (In a Pack of 3)
£70.11(exc. VAT)
Better World
  • RS Stock No. 124-7740
  • Mfr. Part No. 5SV3642-6KL
Each
£120.57(exc. VAT)
  • RS Stock No. 201-6963
  • Mfr. Part No. 2CSR275180R1104 DS201 M C10 A30
Each
£133.31(exc. VAT)
Better World
  • RS Stock No. 211-6005
  • Mfr. Part No. 3VA1125-5EF42-0AA0
Each
£294.48(exc. VAT)
Better World
  • RS Stock No. 209-7448
  • Mfr. Part No. 5SL4232-6
Each
£52.43(exc. VAT)
  • RS Stock No. 131-305
  • Mfr. Part No. 0903041
Each (In a Pack of 6)
£90.42(exc. VAT)
  • RS Stock No. 245-083
  • Mfr. Part No. A9D05810
Each
£155.78(exc. VAT)
  • RS Stock No. 228-765
  • Mfr. Part No. C22G50 CYLINDRICAL FUSE 22 x 58 50A GG 690V AC
1 Pack of 10
£27.01(exc. VAT)
Better World
  • RS Stock No. 254-6284
  • Mfr. Part No. C10F32D100
Each
£622.65(exc. VAT)
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