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

668 of 999+
  • RS Stock No. 282-2340
  • Mfr. Part No. FB25288Q1
Each (In a Pack of 8)
£7.64
  • RS Stock No. 225-5905
  • Mfr. Part No. 1SL1946A00
Each
£4.53
  • RS Stock No. 179-2997
  • Mfr. Part No. 2080490000
Each
£26.54
  • RS Stock No. 247-1762
  • Mfr. Part No. 33241
Each
£1,876.90
  • RS Stock No. 116-963
  • Mfr. Part No. RK 0205 T
Each
£21.15
  • RS Stock No. 231-9707
  • Mfr. Part No. 2CDS271065R0457 S201MT-K15
1 Box of 1
£102.87
  • RS Stock No. 357-077
  • Mfr. Part No. BGL26100LU
Each
£470.88
  • RS Stock No. 259-932
  • Mfr. Part No. 271506 NZM3-XTVD-60
Each
£164.97
  • RS Stock No. 229-500
  • Mfr. Part No. 111659 NZMN3-VE400-BT
Each
£2,186.22
Better World
  • RS Stock No. 248-3726
  • Mfr. Part No. A9Z64480
Each
£2,016.27
  • RS Stock No. 627-018
  • Mfr. Part No. 3NW7531-3HG
1 Pack of 2
£128.84
  • RS Stock No. 254-4819
  • Mfr. Part No. 2882763
Each
£190.31
Better World
  • RS Stock No. 209-4920
  • Mfr. Part No. 3VA1116-4EF32-0AA0
Each
£453.76
  • RS Stock No. 260-7806
  • Mfr. Part No. C16N3TM125
Each
£842.04
  • RS Stock No. 246-516
  • Mfr. Part No. 184234 IZMX-KLP-SO-CASTELL-1
Each
£312.93
  • RS Stock No. 654-493
  • Mfr. Part No. C10M2TM050
Each
£298.23
  • RS Stock No. 257-075
  • Mfr. Part No. 281301 NZMH2-M32
Each
£438.78
  • RS Stock No. 266-3069
  • Mfr. Part No. 0 102 63
1 Box of 10
£13.06
  • RS Stock No. 782-7944
  • Mfr. Part No. W23-X1A1G-2
Each
£40.07
  • RS Stock No. 240-530
  • Mfr. Part No. 101254 PLI-C6/1
Each
£30.19
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