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.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

50804 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8530
Each
£70.38(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 32A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3398
  • Mfr. Part No. A9F54332
Each
£106.92(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 16A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3382
  • Mfr. Part No. A9F54316
Each
£106.92(exc. VAT)
In Stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8537
Each
£91.21(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 6A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3290
  • Mfr. Part No. A9F54106
Each
£27.19(exc. VAT)
In Stock
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9556
  • Mfr. Part No. 00940957XXN
Each
£45.04(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 2A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3326
  • Mfr. Part No. A9F54202
Each
£92.21(exc. VAT)
In Stock
RS PRO MCB, 1P, 6A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0204
Each
£8.57(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 16A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3297
  • Mfr. Part No. A9F54116
Each
£24.20(exc. VAT)
In Stock
RS PRO MCB, 3P, 32A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0208
Each
£29.93(exc. VAT)
In Stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8543
Each
£171.57(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 63A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3405
  • Mfr. Part No. A9F54363
Each
£140.31(exc. VAT)
In Stock
Rittal Earth Bar L. 450mm x W. 15mm x H. 5mm
  • RS Stock No. 826-2868
  • Mfr. Part No. 7113000
Each
£36.33(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 10A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3341
  • Mfr. Part No. A9F54210
Each
£73.51(exc. VAT)
In Stock
Eaton 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 489-4405
  • Mfr. Part No. C10G2
1 Pack of 10
£11.12(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 6A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3332
  • Mfr. Part No. A9F54206
Each
£80.18(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 4A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3338
  • Mfr. Part No. A9F54204
Each
£86.87(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti 9 Range
  • RS Stock No. 790-9193
  • Mfr. Part No. A9D31806
Each
£148.47(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Each
£64.47(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 25A Current Rating
  • RS Stock No. 406-9491
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-25A
Each
£23.00(exc. VAT)
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