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.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

47266 Products showing for Fuses & Circuit Breakers

19 of 999+
  • RS Stock No. 173-7932
  • Mfr. Part No. 8601.2000
Each (In a Box of 50)
HK$9.516
  • RS Stock No. 184-9033
  • Mfr. Part No. CPB1016D
Each
HK$44.90
  • RS Stock No. 412-914
  • Mfr. Part No. TDC10-4A
Each (In a Pack of 10)
HK$3.11
  • RS Stock No. 849-6531
  • Mfr. Part No. EUC2P2C
Each
HK$125.50
  • RS Stock No. 229-173
  • Mfr. Part No. BAO63
1 Pack of 20
HK$4,374.20
Better World
  • RS Stock No. 202-7129
  • Mfr. Part No. 5SL6332-7
Each
HK$561.70
  • RS Stock No. 541-3669
  • Mfr. Part No. 0452004.MRL
Each (In a Pack of 10)
HK$7.26
  • RS Stock No. 787-4186P
  • Mfr. Part No. 1206L012WR
Each (Supplied on a Reel)
HK$2.32
  • RS Stock No. 537-1004
  • Mfr. Part No. S506-10-R
Each (In a Pack of 10)
HK$4.17
  • RS Stock No. 246-606
  • Mfr. Part No. 187201 AFDD-16/2/B/001-A
Each
HK$2,092.66
Better World
  • RS Stock No. 181-2611
  • Mfr. Part No. DF2CA10
Each (In a Box of 10)
HK$50.71
Better World
  • RS Stock No. 209-7508
  • Mfr. Part No. 5SV6016-6GV06
Each (In a Pack of 12)
HK$1,553.933
Better World
  • RS Stock No. 482-689
  • Mfr. Part No. DF222
Each
HK$362.40
  • RS Stock No. 260-8122
  • Mfr. Part No. C40N31M320
Each
HK$27,616.84
  • RS Stock No. 865-7398
  • Mfr. Part No. 0034.2520
Each (In a Pack of 10)
HK$10.77
  • RS Stock No. 182-1581
  • Mfr. Part No. RS20FWH
Each
HK$1,314.10
  • RS Stock No. 177-8099
Each (In a Pack of 5)
HK$17.24
  • RS Stock No. 848-3857
  • Mfr. Part No. GMT-1A
Each
HK$175.70
  • RS Stock No. 267-3537
  • Mfr. Part No. 70-010-05/2A
Each (In a Pack of 5)
HK$47.60
  • RS Stock No. 852-7152
  • Mfr. Part No. MDL-4-R
Each
HK$42.00
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