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

520 of 999+
  • RS Stock No. 275-8762
  • Mfr. Part No. ENN12819
Each
£10.31(exc. VAT)
  • RS Stock No. 266-3720
  • Mfr. Part No. 405207
1 Box of 10
£104.37(exc. VAT)
  • RS Stock No. 230-1064
  • Mfr. Part No. 109272 PFGCM-40/2/003
Each
£46.08(exc. VAT)
  • RS Stock No. 252-5319
  • Mfr. Part No. 60320125
Each (In a Pack of 10)
£3.202(exc. VAT)
  • RS Stock No. 272-1428
  • Mfr. Part No. 206740 C-PKZ0-K
Each
£6.52(exc. VAT)
  • RS Stock No. 250-4767
  • Mfr. Part No. 2CDL340001R1022
Each
£21.82(exc. VAT)
  • RS Stock No. 260-9468
  • Mfr. Part No. C10H3TM080
Each
£684.96(exc. VAT)
  • RS Stock No. 266-1392
  • Mfr. Part No. 417345
Each
£98.84(exc. VAT)
  • RS Stock No. 218-2906
  • Mfr. Part No. 3RV2928-1A
Each
£40.37(exc. VAT)
  • RS Stock No. 140-680
  • Mfr. Part No. 2CCS862001R0135
Each
£139.61(exc. VAT)
  • RS Stock No. 233-0625
  • Mfr. Part No. BK-S-8203-1X-DIN
1 Box of 198
£789.52(exc. VAT)
  • RS Stock No. 203-727
  • Mfr. Part No. 2CDS254001R0015
Each
£156.91(exc. VAT)
Better World
  • RS Stock No. 270-3598
  • Mfr. Part No. 3VA2010-8HL32-0AA0
Each
£646.00(exc. VAT)
  • RS Stock No. 738-3153
  • Mfr. Part No. 0KLK002.T
Each
£25.88(exc. VAT)
  • RS Stock No. 736-2627P
  • Mfr. Part No. 160000.0,63
Each (Supplied in a Bag)
£0.824(exc. VAT)
  • RS Stock No. 207-2808
  • Mfr. Part No. 2910501
Each
£57.93(exc. VAT)
  • RS Stock No. 707-6852
  • Mfr. Part No. F1206B2R00FSTR
Each (In a Pack of 10)
£0.577(exc. VAT)
  • RS Stock No. 258-6395
  • Mfr. Part No. SA82SB0
Each (In a Bag of 5000)
£0.353(exc. VAT)
  • RS Stock No. 275-0186
  • Mfr. Part No. CPP11-52-20.0A-OB-V
Each
£18.36(exc. VAT)
  • RS Stock No. 288-1515
  • Mfr. Part No. LV833857SP
Each
£108.76(exc. VAT)
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