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.

51811 Products showing for Fuses & Circuit Breakers

1 of 999+
Temporarily out of stock
  • RS Stock No. 211-2540
  • Mfr. Part No. GVAPL01
Subtotal (1 unit)
£75.52(exc. VAT)
£75.52/unit
Stocked by manufacturer
  • RS Stock No. 219-8847
  • Mfr. Part No. KBA25ED2302W
Subtotal (1 pack of 6 units)
£431.592(exc. VAT)
£71.932/unit
Stocked by manufacturer
  • RS Stock No. 192-0821
  • Mfr. Part No. 1SDA067417R1
Subtotal (1 unit)
£326.04(exc. VAT)
£326.04/unit
In Stock
RS Better World
  • RS Stock No. 125-1415
  • Mfr. Part No. SEA9BN24PEV
Subtotal (1 unit)
£789.72(exc. VAT)
£789.72/unit
In Stock
  • RS Stock No. 232-0095
  • Mfr. Part No. 1SDA054437R1 T5N400 FF TMA 400A
Subtotal (1 unit)
£1,156.32(exc. VAT)
£1,156.32/unit
Currently unavailable
  • RS Stock No. 850-8622
  • Mfr. Part No. EZ9F66116
Subtotal (1 unit)
£2.02(exc. VAT)
£2.02/unit
In Stock
RS Better World
  • RS Stock No. 806-7304
  • Mfr. Part No. SEA9TB1254
Subtotal (1 unit)
£48.85(exc. VAT)
£48.85/unit
In Stock
  • RS Stock No. 264-9403
  • Mfr. Part No. 1489-M1C040
Subtotal (1 unit)
£46.67(exc. VAT)
£46.67/unit
In Stock
  • RS Stock No. 210-4747
  • Mfr. Part No. EUR125.30/2A
Subtotal (1 unit)
£42.60(exc. VAT)
£42.60/unit
Temporarily out of stock
  • RS Stock No. 825-5558
  • Mfr. Part No. P1MB1PB16
Subtotal (1 unit)
£17.39(exc. VAT)
£17.39/unit
In Stock
  • RS Stock No. 863-7776
  • Mfr. Part No. 4 115 07
Subtotal (1 unit)
£71.99(exc. VAT)
£71.99/unit
Currently unavailable
  • RS Stock No. 850-8628
  • Mfr. Part No. EZ9F66110
Subtotal (1 unit)
£2.02(exc. VAT)
£2.02/unit
In Stock
  • RS Stock No. 541-3120
  • Mfr. Part No. 0217010.MXP
Subtotal (1 pack of 10 units)
£3.20(exc. VAT)
£0.32/unit
In Stock
RS Better World
  • RS Stock No. 254-6286
  • Mfr. Part No. C10F3TM100
Subtotal (1 unit)
£529.13(exc. VAT)
£529.13/unit
Temporarily out of stock
  • RS Stock No. 276-8728
  • Mfr. Part No. A9L16482
Subtotal (1 unit)
£1,301.34(exc. VAT)
£1,301.34/unit
In Stock
  • RS Stock No. 850-8662
  • Mfr. Part No. EZ9D16840
Subtotal (1 unit)
£28.84(exc. VAT)
£28.84/unit
In Stock
  • RS Stock No. 400-1990
  • Mfr. Part No. GV2G245
Subtotal (1 unit)
£12.18(exc. VAT)
£12.18/unit
In Stock
  • RS Stock No. 230-0961
  • Mfr. Part No. 239066 FAZ6-C16/1N
Subtotal (1 unit)
£28.71(exc. VAT)
£28.71/unit
In Stock
  • RS Stock No. 418-467
  • Mfr. Part No. CM32F
Subtotal (1 unit)
£21.06(exc. VAT)
£21.06/unit
In Stock
RS Better World
  • RS Stock No. 254-6352
  • Mfr. Part No. C25F3
Subtotal (1 unit)
£451.84(exc. VAT)
£451.84/unit
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