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

594 of 999+
Better World
  • RS Stock No. 175-1432
  • Mfr. Part No. GV4L115N
Each
£477.41(exc. VAT)
Better World
  • RS Stock No. 211-2337
  • Mfr. Part No. M9F21140
Each
£30.93(exc. VAT)
  • RS Stock No. 225-6129
  • Mfr. Part No. 2CSF204101R2400 F204 A-40/0,1
Each
£152.75(exc. VAT)
  • RS Stock No. 223-2830
  • Mfr. Part No. 60530016
Each (In a Pack of 10)
£4.265(exc. VAT)
  • RS Stock No. 260-7798
  • Mfr. Part No. C16N32D160
Each
£1,100.09(exc. VAT)
Better World
  • RS Stock No. 225-5988
  • Mfr. Part No. 2CDS251001R0164 S201 C 16A - 6 KA
Each
£16.45(exc. VAT)
  • RS Stock No. 260-9419
  • Mfr. Part No. C10B4TM100
Each
£647.76(exc. VAT)
  • RS Stock No. 230-0926
  • Mfr. Part No. 177589 FAZ6-C0,16/3
Each
£97.45(exc. VAT)
  • RS Stock No. 120-999
  • Mfr. Part No. 168267 FRBDM-C6/1N/003-G/A
Each
£137.66(exc. VAT)
  • RS Stock No. 192-0906
  • Mfr. Part No. 1SDA066420R1
Each
£88.27(exc. VAT)
  • RS Stock No. 852-7244
  • Mfr. Part No. TR-3216FF1-R
Each
£0.47(exc. VAT)
  • RS Stock No. 269-3853
  • Mfr. Part No. 7010.3410
Each
£0.57(exc. VAT)
  • RS Stock No. 353-137
  • Mfr. Part No. F-130
Each (In a Pack of 5)
£3.89(exc. VAT)
  • RS Stock No. 259-601
  • Mfr. Part No. 278714 FAZ-K25/1N
Each
£85.03(exc. VAT)
  • RS Stock No. 204-416
  • Mfr. Part No. 2CDS274061R0087
Each
£430.83(exc. VAT)
  • RS Stock No. 245-9221P
  • Mfr. Part No. SF-1206F350M-2
Each (Supplied on a Reel)
£0.392(exc. VAT)
Better World
  • RS Stock No. 270-3500
  • Mfr. Part No. 3VA1450-4EF32-0AA0
Each
£1,200.19(exc. VAT)
Better World
  • RS Stock No. 218-3909
  • Mfr. Part No. A9Z51440
Each
£792.40(exc. VAT)
  • RS Stock No. 654-836
  • Mfr. Part No. A9D19232
Each
£326.09(exc. VAT)
  • RS Stock No. 229-086
  • Mfr. Part No. 7.2WFNHO125 7.2KV 125A 3" MOTOR START FUSE
1 Pack of 3
£1,588.41(exc. VAT)
Results per page