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

298 of 999+
  • RS Stock No. 240-8963
  • Mfr. Part No. 4-1393249-4
Each
£10.48(exc. VAT)
  • RS Stock No. 246-2577
  • Mfr. Part No. 2CCS572001R0317
Each
£78.23(exc. VAT)
  • RS Stock No. 231-9585
  • Mfr. Part No. 2CCS893001R0164 S803N C 16A - 36 KA
Each
£183.14(exc. VAT)
  • RS Stock No. 787-4261
  • Mfr. Part No. 2920L150DR
Each (In a Pack of 5)
£0.54(exc. VAT)
  • RS Stock No. 210-6881
  • Mfr. Part No. 3NA3124-6
Each (In a Pack of 3)
£49.44(exc. VAT)
  • RS Stock No. 489-4512
  • Mfr. Part No. C10M25
Each (In a Pack of 10)
£1.316(exc. VAT)
  • RS Stock No. 435-380
  • Mfr. Part No. 2CCS893001R0631 S803N-D63
Each
£217.09(exc. VAT)
  • RS Stock No. 100-091
  • Mfr. Part No. 2CDS272061R0165
1 Box of 1
£148.24(exc. VAT)
Better World
  • RS Stock No. 214-2067
  • Mfr. Part No. M9F11220
Each
£81.16(exc. VAT)
  • RS Stock No. 746-8179
  • Mfr. Part No. 2CDS273001R0101 S203M-D10
Each
£87.60(exc. VAT)
  • RS Stock No. 729-2815
  • Mfr. Part No. 3130-F130-P7T1-W02Q-16A
Each
£41.10(exc. VAT)
  • RS Stock No. 136-7797
  • Mfr. Part No. 2CSR275051R1325 DSE201 M B32 AC30 - N Blue
Each
£116.27(exc. VAT)
  • RS Stock No. 259-3951
  • Mfr. Part No. 1SDA071995R1
Each
£36,437.02(exc. VAT)
  • RS Stock No. 237-6025
  • Mfr. Part No. 1SDA063010R1 T7S-M 1600A PR231-LS/I FF
Each
£5,177.84(exc. VAT)
  • RS Stock No. 210-2134
  • Mfr. Part No. ESX10-TB-101-DC24V-4A-E
Each
£82.11(exc. VAT)
  • RS Stock No. 201-6894
  • Mfr. Part No. 2CSR255180R2105 DS201 B10 A100
Each
£211.05(exc. VAT)
Better World
  • RS Stock No. 132-138
  • Mfr. Part No. 2CDS272001R0134 S202M-C13
Each
£52.80(exc. VAT)
  • RS Stock No. 232-0128
  • Mfr. Part No. 1SDA060210R1 T6N630 FF TMA 630A
Each
£2,249.90(exc. VAT)
  • RS Stock No. 541-4369A
  • Mfr. Part No. 0217.800MXP
Each (In a Pack of 100)
£0.141(exc. VAT)
  • RS Stock No. 191-9458
  • Mfr. Part No. 2CDS251001R0064 S201-C6
Each
£19.11(exc. VAT)
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