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.

51028 Products showing for Fuses & Circuit Breakers

631 of 999+
  • RS Stock No. 147-693
  • Mfr. Part No. 3VA5180-1MU31-0AA0
Each
£300.82
  • RS Stock No. 627-063
  • Mfr. Part No. 3NE1225-4D
1 Pack of 2
£226.60
  • RS Stock No. 120-636
  • Mfr. Part No. 168889 NZMH3-4-A320-SVE
Each
£2,905.29
  • RS Stock No. 252-764
  • Mfr. Part No. 193522 FRBmM-B32/1N/01-F
Each
£180.36
  • RS Stock No. 229-025
  • Mfr. Part No. CM32F
1 Pack of 10
£192.06
  • RS Stock No. 825-6125
  • Mfr. Part No. P1X9033
Each
£70.27
  • RS Stock No. 261-693
  • Mfr. Part No. TPS-70
1 Pack of 10
£301.87
  • RS Stock No. 518-985
  • Mfr. Part No. 1464486
Each
£22.13
  • RS Stock No. 783-3276
  • Mfr. Part No. 70-007-65/0.2A
Each (In a Pack of 10)
£0.56
  • RS Stock No. 692-5071P
  • Mfr. Part No. SF-1206S700-2
Each (Supplied on a Reel)
£0.313
Better World
  • RS Stock No. 806-7411
  • Mfr. Part No. SEA9BN16PEV
Each
£535.32
  • RS Stock No. 178-825
  • Mfr. Part No. 2CCS553001R0255 - S403EB25
Each
£80.44
  • RS Stock No. 178-213
  • Mfr. Part No. 2CCS551001R0205 - S401EB20
Each
£14.79
  • RS Stock No. 653-823
  • Mfr. Part No. LVS04716
Each
£6,808.27
  • RS Stock No. 847-3358
  • Mfr. Part No. 102174 FAZ-C32/2-NA
Each
£88.38
  • RS Stock No. 176-835
  • Mfr. Part No. 2CCS551001R0065 - S401EB6
Each
£19.80
  • RS Stock No. 120-980
  • Mfr. Part No. 168204 FRBDM-C16/2/003-G/A
Each
£147.92
  • RS Stock No. 230-821
  • Mfr. Part No. 118988 NZM3-XHB-DA
Each
£386.05
  • RS Stock No. 506-961P
  • Mfr. Part No. RGEF1000
Each (Supplied in a Bag)
£0.876
  • RS Stock No. 169-9412
  • Mfr. Part No. S500-160-R
1 Bag of 1000
£296.94
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