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

583 of 999+
  • RS Stock No. 212-025
  • Mfr. Part No. R9F23310
Each
£38.84(exc. VAT)
  • RS Stock No. 281-6001
  • Mfr. Part No. FB243480Q1
Each
£67.14(exc. VAT)
Better World
  • RS Stock No. 231-9694
  • Mfr. Part No. 2CDS271001R0277 S201M K 2A - 15 KA
1 Box of 1
£32.19(exc. VAT)
  • RS Stock No. 229-597
  • Mfr. Part No. 107637 NZMN2-AF45-BT-NA
Each
£559.52(exc. VAT)
  • RS Stock No. 275-0356
  • Mfr. Part No. LEL1-1-62-10.0-AF-01-V
1 Box of 5
£206.95(exc. VAT)
  • RS Stock No. 435-471
  • Mfr. Part No. 2CCS863001R0635 S803S-B63
Each
£225.03(exc. VAT)
  • RS Stock No. 201-6969
  • Mfr. Part No. 2CSR255080R1254 DS201 C25 AC30
Each
£134.78(exc. VAT)
  • RS Stock No. 541-3401P
  • Mfr. Part No. 0451002.MRL
Each (Supplied on a Reel)
£0.933(exc. VAT)
  • RS Stock No. 236-6860
  • Mfr. Part No. 1SDA069061R1 RHS R XT2-XT4 F/P EMERG
Each
£150.33(exc. VAT)
  • RS Stock No. 260-9452
  • Mfr. Part No. C10H32M100
Each
£610.60(exc. VAT)
  • RS Stock No. 182-1449
  • Mfr. Part No. 100LR85
Each (In a Box of 20)
£8.484(exc. VAT)
Better World
  • RS Stock No. 746-8002
  • Mfr. Part No. 2CDS252001R0517 S202-K25
Each
£67.79(exc. VAT)
Better World
  • RS Stock No. 219-9050
  • Mfr. Part No. DF2CA32
Each (In a Pack of 10)
£8.504(exc. VAT)
  • RS Stock No. 218-8759
  • Mfr. Part No. 1492-SPM1D040-N
Each
£42.96(exc. VAT)
  • RS Stock No. 284-6101
  • Mfr. Part No. 4410.0106
Each
£18.80(exc. VAT)
  • RS Stock No. 225-5923
  • Mfr. Part No. 2CCF019603R0001 S802PV-SP40 - 5 kA
Each
£206.07(exc. VAT)
  • RS Stock No. 223-7616
  • Mfr. Part No. 5TT4132-3
Each
£76.32(exc. VAT)
  • RS Stock No. 654-561
  • Mfr. Part No. A9R41263
Each
£247.27(exc. VAT)
  • RS Stock No. 703-2650
  • Mfr. Part No. 8020.0605.PT
Each (In a Pack of 10)
£1.07(exc. VAT)
  • RS Stock No. 538-3833
  • Mfr. Part No. 2CDE283001R0100 E203/100R
Each
£66.20(exc. VAT)
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