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+
In Stock
  • RS Stock No. 201-7936
  • Mfr. Part No. ECUBP
Subtotal (1 pair)
£4.01(exc. VAT)
£4.01/pair
In Stock
  • RS Stock No. 703-8392
  • Mfr. Part No. C10G20
Subtotal (1 pack of 10 units)
£11.01(exc. VAT)
£11.01/pack
In Stock
  • RS Stock No. 787-4126
  • Mfr. Part No. 0287002.PXCN
Subtotal (1 pack of 10 units)
£3.04(exc. VAT)
£0.304/unit
In Stock
  • RS Stock No. 219-9556
  • Mfr. Part No. 00940957XXN
Subtotal (1 unit)
£45.49(exc. VAT)
£45.49/unit
In Stock
  • RS Stock No. 787-4120
  • Mfr. Part No. 0287015.PXCN
Subtotal (1 pack of 10 units)
£2.54(exc. VAT)
£2.54/pack
In Stock
  • RS Stock No. 703-8443
  • Mfr. Part No. C14G50
Subtotal (1 pack of 10 units)
£20.89(exc. VAT)
£20.89/pack
Temporarily out of stock
  • RS Stock No. 756-196
Subtotal (1 unit)
£26.48(exc. VAT)
£26.48/unit
In Stock
  • RS Stock No. 101-741
Subtotal (1 unit)
£138.11(exc. VAT)
£138.11/unit
In Stock
  • RS Stock No. 528-983
Subtotal (1 unit)
£21.78(exc. VAT)
£21.78/unit
In Stock
  • RS Stock No. 521-2523
Subtotal (1 pack of 5 units)
£20.54(exc. VAT)
£20.54/pack
In Stock
  • RS Stock No. 413-377
  • Mfr. Part No. AAO32
Subtotal (1 pack of 5 units)
£33.16(exc. VAT)
£33.16/pack
In Stock
  • RS Stock No. 501-871
Subtotal (1 unit)
£9.75(exc. VAT)
£9.75/unit
In Stock
  • RS Stock No. 261-417
  • Mfr. Part No. TIA32
Subtotal (1 pack of 20 units)
£171.77(exc. VAT)
£171.77/pack
In Stock
  • RS Stock No. 123-6689
  • Mfr. Part No. 9000-41034-0100600
Subtotal (1 unit)
£138.63(exc. VAT)
£138.63/unit
In Stock
  • RS Stock No. 849-6581
  • Mfr. Part No. EUC3P10C
Subtotal (1 unit)
£22.40(exc. VAT)
£22.40/unit
In Stock
  • RS Stock No. 390-2448
Subtotal (1 pack of 10 units)
£17.55(exc. VAT)
£17.55/pack
In Stock
  • RS Stock No. 610-9765
Subtotal (1 pack of 10 units)
£4.79(exc. VAT)
£4.79/pack
In Stock
  • RS Stock No. 789-7808
  • Mfr. Part No. 0001.2516
Subtotal (1 bag of 10 units)
£5.67(exc. VAT)
£0.567/unit
In Stock
  • RS Stock No. 101-748
Subtotal (1 unit)
£23.38(exc. VAT)
£23.38/unit
In Stock
  • RS Stock No. 247-2725
  • Mfr. Part No. D217169 / FR10GG50V8
Subtotal (1 box of 10 units)
£14.28(exc. VAT)
£14.28/box
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