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. 541-2975A
  • Mfr. Part No. 02133.15MXP
Each (In a Pack of 100)
£0.289(exc. VAT)
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Each
£20.44(exc. VAT)
  • RS Stock No. 246-2543
  • Mfr. Part No. 2CCS571103R8467
Each
£73.08(exc. VAT)
  • RS Stock No. 276-8740
  • Mfr. Part No. A9R31463
Each
£389.90(exc. VAT)
Better World
  • RS Stock No. 221-1181
  • Mfr. Part No. LV429289
Each
£299.91(exc. VAT)
  • RS Stock No. 181-8753
  • Mfr. Part No. SMD32
Each
£3.61(exc. VAT)
  • RS Stock No. 210-2135
  • Mfr. Part No. ESX10-TB-101-DC24V-6A-E
Each
£82.11(exc. VAT)
  • RS Stock No. 144-4708
  • Mfr. Part No. NFN202
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£99.94(exc. VAT)
  • RS Stock No. 124-3141
  • Mfr. Part No. 5ST3705
Each
£72.64(exc. VAT)
  • RS Stock No. 212-136
  • Mfr. Part No. R9D01632
Each
£112.44(exc. VAT)
  • RS Stock No. 878-3520
  • Mfr. Part No. 05710007LXP
Each
£17.58(exc. VAT)
  • RS Stock No. 211-3846
  • Mfr. Part No. 8US1213-4AU01
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£117.28(exc. VAT)
Better World
  • RS Stock No. 874-4275
  • Mfr. Part No. 3VA1163-4EF36-0AA0
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£228.19(exc. VAT)
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  • Mfr. Part No. 2CSR255180R1165 DS201 B16 A30
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£166.85(exc. VAT)
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  • Mfr. Part No. KV9118M
Each
£137.11(exc. VAT)
Better World
  • RS Stock No. 238-3475
  • Mfr. Part No. A9R77763
Each
£391.38(exc. VAT)
  • RS Stock No. 521-2747
Each
£32.99(exc. VAT)
Better World
  • RS Stock No. 256-6775
  • Mfr. Part No. M9F23416
Each
£191.87(exc. VAT)
Better World
  • RS Stock No. 248-3709
  • Mfr. Part No. A9XMC1D3
Each
£134.04(exc. VAT)
Better World
  • RS Stock No. 806-7216
  • Mfr. Part No. A9XPH257
Each
£116.29(exc. VAT)
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