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

7 of 999+
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
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
Eaton 16A gG/gL Cartridge Fuse, 14 x 51mm
  • RS Stock No. 229-272
  • Mfr. Part No. C14G16
1 Pack of 10
HK$199.50
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
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
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
Eaton 16A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-265
  • Mfr. Part No. C10G16 CYLINDRICAL FUSE 10 x 38 16A GG 500V AC
1 Pack of 10
HK$98.00
Bourns Non Resettable Fuse 375mA, 125V ac
  • RS Stock No. 191-4605
  • Mfr. Part No. SF-2410FP0375T-2
Each (On a Tape of 10)
HK$11.86
Schneider Electric Linergy Busbar Support for use with Linergy BS
  • RS Stock No. 276-8806
  • Mfr. Part No. LVS04192
Each
HK$586.27
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 212-021
  • Mfr. Part No. R9D01606
Each
HK$1,265.47
Legrand 32A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 293-8250
  • Mfr. Part No. 0 133 32
Each (In a Pack of 10)
HK$16.56
Eaton 10A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 412-324
  • Mfr. Part No. TDC10-10A
Each (In a Pack of 10)
HK$12.62
RS PRO 16A M Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 182-4018P
Each (Supplied in a Box)
HK$31.84
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 3P, 20A Curve C, 277V AC
  • RS Stock No. 256-6808
  • Mfr. Part No. M9F52320
Each
HK$2,934.40
Mersen 10A 5SF Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 816-8933
  • Mfr. Part No. X090525
Each (In a Pack of 10)
HK$5.04
Carling Technologies Thermal Circuit Breaker - E Single Pole 600V Voltage Rating Panel Mount, 5A Current Rating
  • RS Stock No. 881-1261
  • Mfr. Part No. EA1-B0-26-450-32E-FB
Each
HK$342.80
Europa RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, EUBLMC Range
  • RS Stock No. 210-4734
  • Mfr. Part No. EUBLMC40B30A
Each
HK$637.20
Better World
Siemens, SENTRON MCCB 3P 32A, Breaking Capacity 16 kA
  • RS Stock No. 209-6956
  • Mfr. Part No. 3VA1032-2ED32-0AA0
Each
HK$2,566.30
Siemens SENTRON 5SJ4 MCB, 3P, 16A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 212-8860
  • Mfr. Part No. 5SJ4316-7HG42
Each
HK$1,631.40
Better World
Schneider Electric RCBO, 40A Current Rating, 3P Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3302
  • Mfr. Part No. A9DK5740
Each
HK$3,564.10
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