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.

50973 Products showing for Fuses & Circuit Breakers

657 of 999+
  • RS Stock No. 288-7179
  • Mfr. Part No. C106TM063
Each
£136.82
  • RS Stock No. 141-246
  • Mfr. Part No. 2CCS863017R0517
Each
£258.27
  • RS Stock No. 260-7894
  • Mfr. Part No. C25F44V250
Each
£3,884.69
  • RS Stock No. 823-4670
  • Mfr. Part No. 4 067 86
Each
£31.13
Better World
  • RS Stock No. 200-6014
  • Mfr. Part No. 5SV3344-4
Each
£640.00
  • RS Stock No. 200-228
  • Mfr. Part No. 2CDS274001R0278
Each
£173.57
  • RS Stock No. 246-2510
  • Mfr. Part No. 2CCS571001R1138
Each
£55.74
  • RS Stock No. 647-8190
  • Mfr. Part No. MF-MSMF075-2
Each (In a Pack of 10)
£0.209
  • RS Stock No. 628-843
  • Mfr. Part No. 8GK6430-4KK13
Each
£153.24
  • RS Stock No. 517-6950
  • Mfr. Part No. RGEF700
Each (In a Pack of 5)
£0.594
  • RS Stock No. 188-1659
  • Mfr. Part No. P1MBUH3PC16
Each
£158.50
  • RS Stock No. 177-8131
Each (In a Pack of 50)
£0.349
  • RS Stock No. 746-8131
  • Mfr. Part No. 2CDS271001R0101 S201M-D10
Each
£20.27
  • RS Stock No. 218-8530
  • Mfr. Part No. 1492-D1C020
Each (In a Pack of 2)
£53.85
  • RS Stock No. 201-138
  • Mfr. Part No. 2CDS271103R0205
Each
£42.87
  • RS Stock No. 521-4838
  • Mfr. Part No. 5SJ6120-7KS
Each
£15.75
Better World
  • RS Stock No. 191-6076
  • Mfr. Part No. A9DA6616
Each
£266.95
  • RS Stock No. 225-8238
  • Mfr. Part No. PTSLR12066V075
1 Reel of 5000
£1,680.00
  • RS Stock No. 279-6758
Each (In a Pack of 100)
£0.32
  • RS Stock No. 231-9358
  • Mfr. Part No. 1SDA104738R1 ES XT5 3pcs
Each
£60.16
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