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.

50957 Products showing for Fuses & Circuit Breakers

689 of 999+
  • RS Stock No. 260-7793
  • Mfr. Part No. C16H4TM160
Each
£1,392.71
  • RS Stock No. 122-394
  • Mfr. Part No. LV510626
Each
£332.40
  • RS Stock No. 432-740
  • Mfr. Part No. 64930
Each
£312.38
  • RS Stock No. 341-481
  • Mfr. Part No. KSA630DLF4AM
Each
£2,525.94
  • RS Stock No. 260-7924
  • Mfr. Part No. C25H4TM125
Each
£1,601.11
  • RS Stock No. 357-953
  • Mfr. Part No. INS44217
Each
£168.84
  • RS Stock No. 260-8127
  • Mfr. Part No. C40N34V400
Each
£5,190.04
  • RS Stock No. 259-428
  • Mfr. Part No. 281306 NZMH2-M100
Each
£598.64
  • RS Stock No. 229-131
  • Mfr. Part No. FNQ-9
1 Pack of 10
£479.59
  • RS Stock No. 288-7707
  • Mfr. Part No. ESS30-S003-DC24V-8A
Each
£109.45
  • RS Stock No. 229-221
  • Mfr. Part No. FNQ-8/10
1 Pack of 10
£421.28
  • RS Stock No. 242-1134
Each (In a Pack of 5)
£3.708
  • RS Stock No. 260-8124
  • Mfr. Part No. C40N32D250
Each
£2,719.67
  • RS Stock No. 260-8150
  • Mfr. Part No. C40S4TM320D
Each
£2,326.61
  • RS Stock No. 731-9685
  • Mfr. Part No. 4 076 95
Each
£110.62
  • RS Stock No. 260-8028
  • Mfr. Part No. C25V4TM200
Each
£3,352.97
Better World
  • RS Stock No. 211-2450
  • Mfr. Part No. M9F43302
Each
£252.77
  • RS Stock No. 125-1538
  • Mfr. Part No. 1492-AAT2
Each
£7.75
Better World
  • RS Stock No. 211-0366
  • Mfr. Part No. KBA40EDA20W
Each
£61.73
  • RS Stock No. 361-610
  • Mfr. Part No. 44020401
Each
£134.50
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