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.

50907 Products showing for Fuses & Circuit Breakers

642 of 999+
  • RS Stock No. 484-009
  • Mfr. Part No. 1117754
Each
£270.08(exc. VAT)
  • RS Stock No. 849-6272
  • Mfr. Part No. ECWBB8
Each
£5.15(exc. VAT)
  • RS Stock No. 140-848
  • Mfr. Part No. 2CCS861001R0204
Each
£62.70(exc. VAT)
  • RS Stock No. 223-7616
  • Mfr. Part No. 5TT4132-3
Each
£76.32(exc. VAT)
  • RS Stock No. 654-740
  • Mfr. Part No. A9R25240
Each
£348.76(exc. VAT)
  • RS Stock No. 221-3671
Each (In a Pack of 3)
£12.363(exc. VAT)
  • RS Stock No. 630-871
  • Mfr. Part No. F095570Q
1 Box of 10
£8.80(exc. VAT)
Better World
  • RS Stock No. 270-3500
  • Mfr. Part No. 3VA1450-4EF32-0AA0
Each
£1,200.19(exc. VAT)
Better World
  • RS Stock No. 210-1744
  • Mfr. Part No. 3VA2463-5HN42-0AA0
Each
£2,128.96(exc. VAT)
Better World
  • RS Stock No. 209-6764
  • Mfr. Part No. 3VA1116-5EF42-0AA0
Each
£652.93(exc. VAT)
  • RS Stock No. 254-4114
  • Mfr. Part No. PF-FB1-160
Each
£103.32(exc. VAT)
  • RS Stock No. 340-879
  • Mfr. Part No. C080B3WM
Each
£3,251.54(exc. VAT)
  • RS Stock No. 534-8981
  • Mfr. Part No. 12424 M124240000
Each
£6.91(exc. VAT)
  • RS Stock No. 257-829
  • Mfr. Part No. 280349 BC-O-2/24-ECO
Each
£77.72(exc. VAT)
  • RS Stock No. 738-2996
  • Mfr. Part No. 0473007.MRT1L
Each (In a Pack of 10)
£1.022(exc. VAT)
  • RS Stock No. 798-2224
  • Mfr. Part No. EUB150B
Each
£4.00(exc. VAT)
  • RS Stock No. 293-8137
  • Mfr. Part No. 0 116 10
Each (In a Pack of 10)
£1.447(exc. VAT)
  • RS Stock No. 204-392
  • Mfr. Part No. 2CDS273061R0608
Each
£542.32(exc. VAT)
  • RS Stock No. 262-264
  • Mfr. Part No. 63ENSFWHITE 63A 550V FUSE HOLDER WHITE
1 Pack of 5
£124.63(exc. VAT)
  • RS Stock No. 277-8527
Each
£7.49(exc. VAT)
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