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. 209-6630
  • Mfr. Part No. 5SL4310-7
Each
£81.11(exc. VAT)
Better World
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  • Mfr. Part No. 3VA10402ED320AA0
Each
£146.14(exc. VAT)
  • RS Stock No. 774-0171
  • Mfr. Part No. 121726 PKE-XTU-32
Each
£139.56(exc. VAT)
Better World
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  • Mfr. Part No. LV438337
Each
£290.35(exc. VAT)
  • RS Stock No. 721-1588
Each (In a Pack of 10)
£1.02(exc. VAT)
Better World
  • RS Stock No. 224-7780
  • Mfr. Part No. 3VA1102-5MG36-0AA0
Each
£233.13(exc. VAT)
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  • Mfr. Part No. 1492-SPM1C200
Each
£19.09(exc. VAT)
  • RS Stock No. 147-249
  • Mfr. Part No. 3VA5211-7EC41-0AA0
Each
£1,180.92(exc. VAT)
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  • Mfr. Part No. 67220250
Each (In a Pack of 3)
£22.197(exc. VAT)
Better World
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  • Mfr. Part No. 3VA6140-6KL31-0AA0
Each
£1,174.45(exc. VAT)
Better World
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  • Mfr. Part No. 3VA1150-6ED42-0AA0
Each
£275.32(exc. VAT)
  • RS Stock No. 254-4234
  • Mfr. Part No. PF-NT5-80
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£20.713(exc. VAT)
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  • Mfr. Part No. RF2637-000
1 Box of 10000
£2,415.82(exc. VAT)
  • RS Stock No. 120-989
  • Mfr. Part No. 168272 FRBDM-C25/1N/003-G/A
Each
£147.92(exc. VAT)
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  • Mfr. Part No. 1SDA067506R1 Ekip I In=160A XT4 3p
Each
£452.55(exc. VAT)
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  • Mfr. Part No. SF-1206SA050M-2
Each (On a Tape of 10)
£0.515(exc. VAT)
  • RS Stock No. 610-3521
  • Mfr. Part No. 2CSB204101R4630 - DDA204 A-63/0,5
Each
£170.47(exc. VAT)
Better World
  • RS Stock No. 209-6641
  • Mfr. Part No. 5SL4504-7
Each
£59.55(exc. VAT)
  • RS Stock No. 169-9511
  • Mfr. Part No. SR-5F-1A-BK
Each (In a Bag of 200)
£1.233(exc. VAT)
  • RS Stock No. 248-5618
  • Mfr. Part No. P1MB1MC25
Each
£47.49(exc. VAT)
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