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.

50915 Products showing for Fuses & Circuit Breakers

186 of 999+
  • RS Stock No. 125-1501
  • Mfr. Part No. 1492-SPM1D160
Each
£20.90(exc. VAT)
  • RS Stock No. 230-2967
  • Mfr. Part No. 3NA6832-4
Each (In a Pack of 3)
£9.787(exc. VAT)
Better World
  • RS Stock No. 236-6777
  • Mfr. Part No. 1SDA068500R1 XT4S 250 Ekip I 250A FF
Each
£1,020.12(exc. VAT)
  • RS Stock No. 825-5554
  • Mfr. Part No. P1MB1PB10
Each
£16.72(exc. VAT)
  • RS Stock No. 182-1649
  • Mfr. Part No. 100NHM00B-690
Each
£11.75(exc. VAT)
  • RS Stock No. 769-3214
  • Mfr. Part No. SR-5-2-5A-BK
Each (In a Pack of 10)
£0.467(exc. VAT)
Better World
  • RS Stock No. 772-1300
  • Mfr. Part No. 5SY4210-6
Each
£54.31(exc. VAT)
  • RS Stock No. 396-348
  • Mfr. Part No. 3NE8022-1
Each (In a Pack of 3)
£64.407(exc. VAT)
  • RS Stock No. 848-3905
  • Mfr. Part No. KTK-R-2
Each
£37.48(exc. VAT)
  • RS Stock No. 697-225
  • Mfr. Part No. RND 170-00065
1 Pack of 25
£1.45(exc. VAT)
  • RS Stock No. 541-4151
  • Mfr. Part No. 0218.080MXP
Each (In a Pack of 10)
£2.069(exc. VAT)
  • RS Stock No. 721-1594
Each (In a Pack of 10)
£1.082(exc. VAT)
  • RS Stock No. 287-7621
  • Mfr. Part No. 1115670
Each
£66.35(exc. VAT)
  • RS Stock No. 266-1312
  • Mfr. Part No. 406876
Each
£39.85(exc. VAT)
  • RS Stock No. 203-2024
  • Mfr. Part No. 3NA6230
Each (In a Pack of 3)
£21.847(exc. VAT)
  • RS Stock No. 865-7376
  • Mfr. Part No. 0034.2515
Each (In a Pack of 10)
£0.598(exc. VAT)
  • RS Stock No. 100-093
  • Mfr. Part No. 2CDS253103R0404
1 Box of 1
£115.86(exc. VAT)
Better World
  • RS Stock No. 219-8276
  • Mfr. Part No. A9L40281
Each
£163.12(exc. VAT)
  • RS Stock No. 287-6385
  • Mfr. Part No. 2CCS883001R0324
Each
£112.03(exc. VAT)
  • RS Stock No. 144-1803
  • Mfr. Part No. 8020.5022.G
1 Box of 1000
£592.90(exc. VAT)
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