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

47290 Products showing for Fuses & Circuit Breakers

9 of 999+
Schneider Electric IID RCCB, 40A, 4 Pole, 30mA, Type A, 380 → 415V ac
  • RS Stock No. 230-6688
  • Mfr. Part No. A9R51440
Each
HK$858.21(exc. GST)
Littelfuse SMD Non Resettable Fuse 500mA, 125V
  • RS Stock No. 738-2889
  • Mfr. Part No. 0154.500DRT
Each (In a Pack of 10)
HK$20.69(exc. GST)
Bourns 0.065A Resettable Fuse, 220V
  • RS Stock No. 692-6778
  • Mfr. Part No. CMF-RL50-0
Each (In a Pack of 5)
HK$3.46(exc. GST)
Littelfuse 440mA F Ceramic Cartridge Fuse, 10 x 35mm
  • RS Stock No. 738-3194
  • Mfr. Part No. 0FLU.440T
Each
HK$284.40(exc. GST)
Schurter PC Board Non Resettable Fuse, Radial 4A, 250V ac
  • RS Stock No. 173-9809
  • Mfr. Part No. 0034.6621
Each (In a Bag of 100)
HK$2.154(exc. GST)
Littelfuse 0.2A Resettable Fuse, 30V dc
  • RS Stock No. 517-7105
  • Mfr. Part No. MINISMDC020F-2
Each (In a Pack of 10)
HK$2.22(exc. GST)
Bourns 1.1A Resettable Fuse, 16V
  • RS Stock No. 647-8207
  • Mfr. Part No. MF-MSMF110/16-2
Each (In a Pack of 10)
HK$2.75(exc. GST)
RS PRO 4A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8144
Each (In a Pack of 20)
HK$7.295(exc. GST)
Wickmann 2.6A Resettable Fuse, 12V dc
  • RS Stock No. 174-0854
  • Mfr. Part No. RF1183-000
Each (In a Pack of 20)
HK$4.495(exc. GST)
Eaton 20A Rail Mount Fuse Holder for E1 Fuse, 1P, 550V ac
  • RS Stock No. 418-681
  • Mfr. Part No. SC20H
Each
HK$573.90(exc. GST)
RS PRO SMD Non-Resettable Surface Mount Fuse 20A, 63V
  • RS Stock No. 252-2161
Each (On a Tape of 4000)
HK$1.486(exc. GST)
Better World
Schneider Electric iID RCCB, 25A, 4 Pole, 30mA
  • RS Stock No. 734-9129
  • Mfr. Part No. A9R11425
Each
HK$2,235.70(exc. GST)
Better World
Schneider Electric iID RCCB, 63A, 4 Pole, 300mA, Type B-SI, 400V ac
  • RS Stock No. 248-3725
  • Mfr. Part No. A9Z64463
Each
HK$12,009.80(exc. GST)
Eaton 160A Rail Mount Fuse Holder for NH00 Fuse, 3P, 690V ac
  • RS Stock No. 182-1438
  • Mfr. Part No. TD00-DI
Each
HK$823.50(exc. GST)
Contactum 8 Way Steel Consumer Unit, 100A Defender
  • RS Stock No. 184-9140
  • Mfr. Part No. DS0818MS
Each
HK$1,039.72(exc. GST)
Better World
Schneider Electric 4A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 219-9052
  • Mfr. Part No. DF2CN04
Each (In a Pack of 10)
HK$63.01(exc. GST)
Eaton 63A Rail Mount Fuse Holder for A3 Fuse, 1P, 690V ac
  • RS Stock No. 413-923
  • Mfr. Part No. RS63H
Each
HK$1,135.20(exc. GST)
RS PRO 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8085
Each (In a Pack of 50)
HK$3.34(exc. GST)
RS PRO 2A British Standard Fuse, F1, 550V ac
  • RS Stock No. 521-2882
Each (In a Pack of 5)
HK$30.50(exc. GST)
Wickmann 500mA F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 174-0740
  • Mfr. Part No. 0508.500MXP
Each (In a Pack of 10)
HK$52.65(exc. GST)
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