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

521 of 999+
Better World
  • RS Stock No. 260-523
  • Mfr. Part No. 3VA6225-7JP41-0AA0
Each
£2,159.47(exc. VAT)
Better World
  • RS Stock No. 209-5032
  • Mfr. Part No. 3VA1180-3EE32-0AA0
Each
£187.52(exc. VAT)
  • RS Stock No. 288-7115
  • Mfr. Part No. A9N18347
Each
£399.74(exc. VAT)
  • RS Stock No. 230-2200
  • Mfr. Part No. 8WH9130-0PA00
Each (In a Pack of 10)
£9.368(exc. VAT)
  • RS Stock No. 847-3273
  • Mfr. Part No. FAZ-C15/3-NA
Each
£93.22(exc. VAT)
  • RS Stock No. 852-7294
  • Mfr. Part No. S505-1-6-R
Each (In a Pack of 5)
£1.428(exc. VAT)
  • RS Stock No. 254-4109
  • Mfr. Part No. PF-FB1-125
Each (In a Box of 20)
£75.252(exc. VAT)
  • RS Stock No. 608-823
  • Mfr. Part No. 3NH5423
1 Pack of 3
£81.04(exc. VAT)
Better World
  • RS Stock No. 219-9113
  • Mfr. Part No. M9F21310
Each
£119.69(exc. VAT)
  • RS Stock No. 611-9021
Each (In a Pack of 10)
£0.677(exc. VAT)
  • RS Stock No. 254-401
  • Mfr. Part No. 236114 PXL-B6/1N
Each
£42.60(exc. VAT)
  • RS Stock No. 266-3125
  • Mfr. Part No. 0 141 25
1 Box of 10
£94.13(exc. VAT)
  • RS Stock No. 276-8940
  • Mfr. Part No. R9ECT620
Each
£41.22(exc. VAT)
  • RS Stock No. 228-935
  • Mfr. Part No. CEO80
1 Pack of 10
£323.13(exc. VAT)
Better World
  • RS Stock No. 539-8374
  • Mfr. Part No. 2CDS213001R0324 SH203-C32
Each
£55.91(exc. VAT)
Better World
  • RS Stock No. 209-6556
  • Mfr. Part No. 5SL6013-7
Each
£36.53(exc. VAT)
  • RS Stock No. 233-0629
  • Mfr. Part No. BK-S-8301-1X-DIN
Each (In a Pack of 10)
£6.065(exc. VAT)
  • RS Stock No. 119-510
  • Mfr. Part No. LV432467
Each
£2,142.70(exc. VAT)
  • RS Stock No. 300-031
  • Mfr. Part No. 3NW7162
Each
£100.80(exc. VAT)
  • RS Stock No. 847-3484
  • Mfr. Part No. 278779 FAZ-D10/2
Each
£61.53(exc. VAT)
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