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. 746-7829
  • Mfr. Part No. 2CDS254001R0634 S204-C63
Each
£155.91(exc. VAT)
  • RS Stock No. 254-4152
  • Mfr. Part No. PF-FB2-350
Each (In a Box of 10)
£106.48(exc. VAT)
  • RS Stock No. 173-8126
  • Mfr. Part No. 3404.2419.22
1 Reel of 1000
£895.77(exc. VAT)
  • RS Stock No. 246-2639
  • Mfr. Part No. 2CCS573001R0164
Each
£91.88(exc. VAT)
  • RS Stock No. 335-402
  • Mfr. Part No. SEA9PNI2504
Each
£870.73(exc. VAT)
  • RS Stock No. 277-3919
Each (In a Bag of 1000)
£0.893(exc. VAT)
  • RS Stock No. 405-9129
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-2.5A
Each
£23.00(exc. VAT)
  • RS Stock No. 260-8114
  • Mfr. Part No. C40H4
Each
£1,374.90(exc. VAT)
Better World
  • RS Stock No. 124-3154
  • Mfr. Part No. 5SY4140-8
Each
£42.52(exc. VAT)
  • RS Stock No. 177-8094
Each (In a Pack of 50)
£0.23(exc. VAT)
Better World
  • RS Stock No. 482-544
  • Mfr. Part No. DF83
Each
£24.30(exc. VAT)
  • RS Stock No. 266-1303
  • Mfr. Part No. 406295
Each
£644.29(exc. VAT)
  • RS Stock No. 223-7627
  • Mfr. Part No. 5TT4417-5
Each
£57.68(exc. VAT)
  • RS Stock No. 277-3908
Each (In a Bag of 1000)
£1.723(exc. VAT)
  • RS Stock No. 237-5953
  • Mfr. Part No. 1SDA051369R1 AUX 3Q 1SY 250V T1-6
Each
£90.47(exc. VAT)
Better World
  • RS Stock No. 271-9762
  • Mfr. Part No. 3VA1116-3GE42-0AA0
Each
£522.01(exc. VAT)
  • RS Stock No. 361-8159
  • Mfr. Part No. 171530.0,5
Each (In a Pack of 10)
£1.394(exc. VAT)
  • RS Stock No. 874-4534
  • Mfr. Part No. 3VA9988-0AA11
Each
£25.84(exc. VAT)
  • RS Stock No. 738-3276
  • Mfr. Part No. 0468001.NR
Each (In a Pack of 10)
£1.099(exc. VAT)
  • RS Stock No. 141-150
  • Mfr. Part No. 2CCS883001R0255
Each
£133.02(exc. VAT)
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