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.

50973 Products showing for Fuses & Circuit Breakers

666 of 999+
  • RS Stock No. 851-1719
  • Mfr. Part No. HKP-CC
Each (In a Pack of 10)
£4.777
  • RS Stock No. 282-6190
  • Mfr. Part No. BSF-400G-NH310-B
Each
£413.69
  • RS Stock No. 233-0775
  • Mfr. Part No. MF-PSMF110X-2
Each (On a Tape of 10)
£0.266
  • RS Stock No. 205-300
  • Mfr. Part No. C11E34V025B
Each
£853.08
  • RS Stock No. 256-182
  • Mfr. Part No. 240826 FAZT-B12/2
Each
£105.44
Better World
  • RS Stock No. 212-0226
  • Mfr. Part No. LV429043
Each
£103.46
  • RS Stock No. 254-810
  • Mfr. Part No. 263963 ZV-KSBI-3TE/S
Each
£2.92
Better World
  • RS Stock No. 248-3828
  • Mfr. Part No. LV848406
Each
£2,803.09
Better World
  • RS Stock No. 211-2676
  • Mfr. Part No. M9F44108
Each
£34.53
  • RS Stock No. 825-5851
  • Mfr. Part No. P1MB3PC50
Each
£80.04
  • RS Stock No. 254-4214
  • Mfr. Part No. PF-MB1-60
Each
£48.36
  • RS Stock No. 257-508
  • Mfr. Part No. 3VA5570-6EC36-0AA0
Each
£3,073.67
  • RS Stock No. 783-3267
  • Mfr. Part No. 70-007-33/10A
1 Pack of 10
£5.68
  • RS Stock No. 229-149
  • Mfr. Part No. OSD80
1 Pack of 20
£583.09
  • RS Stock No. 210-4745
  • Mfr. Part No. EUR125.100/2A
Each
£41.50
  • RS Stock No. 144-4736
  • Mfr. Part No. NFT701
Each
£91.00
  • RS Stock No. 177-8034
Each (In a Box of 500)
£0.287
  • RS Stock No. 223-7770
  • Mfr. Part No. 7P.24.8.275.1020
Each
£142.71
  • RS Stock No. 260-7996
  • Mfr. Part No. C25V32D100
Each
£2,244.56
  • RS Stock No. 237-5996
  • Mfr. Part No. 1SDA060407R1 RHD W T6
Each
£137.50
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