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.

50907 Products showing for Fuses & Circuit Breakers

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Better World
  • RS Stock No. 271-9801
  • Mfr. Part No. 3VA1116-6FF42-0AA0
Each
£692.68(exc. VAT)
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  • Mfr. Part No. 1492-FB3J60-L
Each (In a Pack of 2)
£123.47(exc. VAT)
Better World
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  • Mfr. Part No. KSA400AF1
Each
£71.89(exc. VAT)
  • RS Stock No. 231-9887
  • Mfr. Part No. 2CSB202001R1400 DDA202 AC-40/0.03
Each
£123.16(exc. VAT)
Better World
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  • Mfr. Part No. M9A26476
Each
£58.57(exc. VAT)
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  • Mfr. Part No. JF 6-150 M6
Each
£3.34(exc. VAT)
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  • Mfr. Part No. LVR005NK
Each (In a Pack of 5)
£0.566(exc. VAT)
Better World
  • RS Stock No. 231-9773
  • Mfr. Part No. 2CDS274001R0254 S204M C 25A - 15 KA
1 Box of 1
£131.63(exc. VAT)
Better World
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  • Mfr. Part No. 5SL4308-6
Each
£77.12(exc. VAT)
  • RS Stock No. 210-2060
  • Mfr. Part No. 3120-N32V-H7T1-SGRX-15A-U0000M
Each
£54.81(exc. VAT)
Better World
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  • Mfr. Part No. 2CDS272001R0205 S202M-B20
Each
£52.80(exc. VAT)
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Each (In a Pack of 10)
£44.221(exc. VAT)
  • RS Stock No. 250-9757
  • Mfr. Part No. 142423 NZMN2-ME200-BT-NA
Each
£2,008.25(exc. VAT)
Better World
  • RS Stock No. 270-4700
  • Mfr. Part No. 3VA2163-0KQ32-0AA0
Each
£1,292.91(exc. VAT)
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  • Mfr. Part No. 3140-F230-P7T1-SGRX-16A
Each
£59.55(exc. VAT)
  • RS Stock No. 231-385
  • Mfr. Part No. 113016 NZMB2-4-AF250-BT-NA
Each
£1,879.25(exc. VAT)
  • RS Stock No. 560-340
  • Mfr. Part No. 0ZCF0110FF2C
Each
£0.21(exc. VAT)
  • RS Stock No. 257-342
  • Mfr. Part No. 3VA5440-0MU31-0AA0
Each
£1,197.18(exc. VAT)
  • RS Stock No. 136-0532
  • Mfr. Part No. HP10M6
Each (In a Box of 10)
£9.943(exc. VAT)
Better World
  • RS Stock No. 209-5975
  • Mfr. Part No. 5SL4325-7
Each
£81.11(exc. VAT)
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