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

6 of 999+
Bulgin 13A Base Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 213-7564
  • Mfr. Part No. FX0326
Each (In a Pack of 5)
HK$32.76(exc. GST)
Littelfuse SMD Non Resettable Fuse 500mA, 125V ac/dc
  • RS Stock No. 219-6074
  • Mfr. Part No. 0154.500DR
Each (In a Pack of 10)
HK$13.65(exc. GST)
Eaton 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 171-6779
  • Mfr. Part No. S505H-V-3-15-R
Each (In a Pack of 5)
HK$6.46(exc. GST)
Eaton 6A British Standard Fuse, E1, 240V ac
  • RS Stock No. 418-710
  • Mfr. Part No. SSD6
Each (In a Pack of 5)
HK$199.82(exc. GST)
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 100mA Trip Sensitivity, Type A, Acti 9 Range
  • RS Stock No. 790-9317
  • Mfr. Part No. A9D12820
Each
HK$1,372.10(exc. GST)
Better World
Siemens 5sV3 RCCB, 16A, 2 Pole, 30mA, Type A, 24-125V
  • RS Stock No. 211-9626
  • Mfr. Part No. 5SV3311-6KK12
Each
HK$1,492.80(exc. GST)
Eaton 13A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-605
  • Mfr. Part No. TDC180-13A
Each (In a Pack of 10)
HK$7.33(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 6A Curve C, 100 → 130V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9239
  • Mfr. Part No. A9F77206
Each
HK$932.50(exc. GST)
RS PRO 2A M Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 182-4154
Each (In a Pack of 5)
HK$38.40(exc. GST)
Hinode Electric Co Ltd 60A Cartridge Fuse, 11 x 38mm
  • RS Stock No. 103-4266
  • Mfr. Part No. 660KHK60
Each (In a Pack of 5)
HK$117.424(exc. GST)
Siemens SENTRON Control Wire Tap for use with 3VA1 100/160 3VA2 100/160/250
  • RS Stock No. 210-9312
  • Mfr. Part No. 3VA9200-0WB00
Each (In a Pack of 10)
HK$64.95(exc. GST)
Eaton xEffect RCCB, 25A, 4 Pole, 30mA, Type B, 456V ac
  • RS Stock No. 262-727
  • Mfr. Part No. 306415 FRCdM-25/4/003-G/Bfq-400
Each
HK$8,961.80(exc. GST)
Socomec 16A F Cartridge Fuse, 14 x 51mm
  • RS Stock No. 223-2830
  • Mfr. Part No. 60530016
Each (In a Pack of 10)
HK$88.509(exc. GST)
Mersen 25A Slow-Blow Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 247-2711
  • Mfr. Part No. C213603
1 Box of 10
HK$253.10(exc. GST)
RS PRO 5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-055
Each (In a Pack of 10)
HK$7.80(exc. GST)
RS PRO 8A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8050
Each (In a Box of 500)
HK$4.105(exc. GST)
Mersen 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 270-3097
  • Mfr. Part No. Q206071
Each (In a Box of 10)
HK$6.378(exc. GST)
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 2A Curve C, 277V AC
  • RS Stock No. 256-6795
  • Mfr. Part No. M9F52202
Each
HK$2,256.70(exc. GST)
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 10A Curve C, 277V AC, 227V DC
  • RS Stock No. 256-6799
  • Mfr. Part No. M9F52210
Each
HK$2,040.50(exc. GST)
Eaton xEffect - FRCmM RCCB, 25A, 2 Pole, 30mA, Type A, 110V
  • RS Stock No. 127-422
  • Mfr. Part No. 180605 FRCMM-25/2/003-A-110
Each
HK$1,214.00(exc. GST)
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