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

4 of 999+
Better World
  • RS Stock No. 790-9305
  • Mfr. Part No. A9D11820
Each
£148.47
  • RS Stock No. 212-239
  • Mfr. Part No. GVAE1TQ
Each
£8.47
Better World
  • RS Stock No. 791-3408
  • Mfr. Part No. A9F54340
Each
£116.29
  • RS Stock No. 537-1341
  • Mfr. Part No. S506-2-R
1 Pack of 10
£1.77
  • RS Stock No. 288-4617
  • Mfr. Part No. JF 25-200 M10
Each
£6.46
Better World
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Each
£64.47
  • RS Stock No. 247-9212
  • Mfr. Part No. NITD32
Each (In a Pack of 5)
£5.18
  • RS Stock No. 265-0195
Each
£9.00
  • RS Stock No. 265-0206
Each
£28.37
Better World
  • RS Stock No. 790-9193
  • Mfr. Part No. A9D31806
Each
£148.47
Better World
  • RS Stock No. 221-1181
  • Mfr. Part No. LV429289
Each
£299.91
  • RS Stock No. 703-8386
  • Mfr. Part No. C10G10
1 Pack of 10
£11.01
Better World
  • RS Stock No. 219-9119
  • Mfr. Part No. M9F22110
Each
£28.01
  • RS Stock No. 186-3460
  • Mfr. Part No. 2CSF202102R1630
Each
£83.22
  • RS Stock No. 415-222
  • Mfr. Part No. TIS63
Each
£18.49
Better World
  • RS Stock No. 791-3297
  • Mfr. Part No. A9F54116
Each
£24.20
  • RS Stock No. 240-6406
  • Mfr. Part No. CPR100030A
Each
£90.86
  • RS Stock No. 628-8054
  • Mfr. Part No. 265725 NZMN2-M200
1 Box of 1
£723.87
  • RS Stock No. 413-901
  • Mfr. Part No. RS20H
Each
£17.91
  • RS Stock No. 250-6314
  • Mfr. Part No. 03500417TXN
Each
£17.98
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