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. 240-6397
  • Mfr. Part No. CCPBR1016AC
Each
£34.64(exc. VAT)
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Each
£157.58(exc. VAT)
  • RS Stock No. 517-7262P
  • Mfr. Part No. MICROSMD110F-2
Each (Supplied on a Reel)
£0.312(exc. VAT)
  • RS Stock No. 357-947
  • Mfr. Part No. BJL46090LU
Each
£768.34(exc. VAT)
Better World
  • RS Stock No. 254-6289
  • Mfr. Part No. C10F4TM025
Each
£609.78(exc. VAT)
  • RS Stock No. 246-634
  • Mfr. Part No. 187416 FRCMM-63/4/01-G/F
Each
£365.65(exc. VAT)
  • RS Stock No. 922-7071
  • Mfr. Part No. 278664 FAZ-C3/1N
Each
£35.80(exc. VAT)
  • RS Stock No. 140-916
  • Mfr. Part No. 2CCS883001R0577
Each
£172.94(exc. VAT)
  • RS Stock No. 254-891
  • Mfr. Part No. 250NHG1B-690 NH FUSE 250A 690V gG SIZE 1
1 Pack of 3
£25.77(exc. VAT)
  • RS Stock No. 162-013
  • Mfr. Part No. 3VA9167-0KT00
Each
£35.29(exc. VAT)
  • RS Stock No. 251-2078
  • Mfr. Part No. NFN101
Each
£47.22(exc. VAT)
Better World
  • RS Stock No. 211-3807
  • Mfr. Part No. 3VA2440-5KP32-0AA0
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£2,212.64(exc. VAT)
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  • Mfr. Part No. 3VA5460-5GC41-0AA0
Each
£2,121.60(exc. VAT)
  • RS Stock No. 204-309
  • Mfr. Part No. 2CDS271061R0014
Each
£87.71(exc. VAT)
  • RS Stock No. 655-448
  • Mfr. Part No. A9Z61263
Each
£932.73(exc. VAT)
  • RS Stock No. 231-9296
  • Mfr. Part No. 1SDA066913R1 FC Cu XT3 3PCS
Each
£17.13(exc. VAT)
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  • Mfr. Part No. 2800881
Each
£76.04(exc. VAT)
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  • Mfr. Part No. 5SM2625-0
Each
£134.06(exc. VAT)
  • RS Stock No. 269-3859
  • Mfr. Part No. 7010.3530
Each
£0.54(exc. VAT)
  • RS Stock No. 769-0045
  • Mfr. Part No. 0234010.MXP
Each (In a Pack of 25)
£0.889(exc. VAT)
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