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 產品顯示為 Fuses & Circuit Breakers

16 of 999+
Selco Thermal Fuse +109°C 10 A, 250V ac
  • RS Stock No. 111-7804
  • Mfr. Part No. SWTC-228-3535
Each (In a Pack of 10)
HK$13.99
WJ Furse Copper Earth Clamp Max. Conductor Size 25 x 3mm 25mm
  • RS Stock No. 153-2964
  • Mfr. Part No. 7TCA083610R0010 CT105-H
Each (In a Pack of 10)
HK$103.592
Mersen 20A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 230-3474
  • Mfr. Part No. D211028
Each (In a Pack of 10)
HK$13.76
RS PRO Non Resettable Fuse 1A, 250V ac
  • RS Stock No. 139-952
1 Bag of 10
HK$149.06
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 32A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 232-0244
  • Mfr. Part No. 1SDA067392R1 XT1C 160 TMD 32A FF
Each
HK$2,380.20
Schneider Electric Thermal Circuit Breaker - GB2 2 Pole 277V ac Voltage Rating DIN Rail Mount, 3A Current Rating
  • RS Stock No. 312-3796
  • Mfr. Part No. GB2DB08
Each
HK$495.30
Schneider Electric Acti9 3 Phase Distribution Board, 12 Way, 250 A
  • RS Stock No. 207-336
  • Mfr. Part No. SE36B250
Each
HK$4,911.83
RS PRO Single Phase Industrial Surge Protector, 40kA, 0.9kV, DIN Rail Mount
  • RS Stock No. 101-798
Each
HK$706.70
ABB System Pro M Compact S200 M UC MCB, 1P, 10A Curve K, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-821
  • Mfr. Part No. 2CDS271061R0427
Each
HK$966.04
Eaton 25A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7421
  • Mfr. Part No. ABC-25-R
Each
HK$22.10
ABB SMISSLINE TP MCB, 1P, 20A, Type Z, 220V AC
  • RS Stock No. 246-2513
  • Mfr. Part No. 2CCS571001R1208
Each
HK$804.20
Eaton 100A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 703-8475
  • Mfr. Part No. C22G100
Each (In a Pack of 10)
HK$30.91
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 10A Curve B, 440V AC, 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2118
  • Mfr. Part No. A9F06210
Each
HK$489.10
Better World
Siemens Sentron 5SY4 MCB, 2P, 6A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1290
  • Mfr. Part No. 5SY4206-8
Each
HK$819.80
Better World
Schneider Electric Busbar Tap-Off Unit with Circuit Breaker, Canalis KS Series
  • RS Stock No. 211-0513
  • Mfr. Part No. KSB63SM48
Each
HK$1,331.20
Eaton 4A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 412-914
  • Mfr. Part No. TDC10-4A
Each (In a Pack of 10)
HK$3.11
Better World
Schneider Electric NSX Motor Mechanism for use with ComPact NSX250
  • RS Stock No. 213-1346
  • Mfr. Part No. LV431546
Each
HK$12,200.98
Siemens 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 3P, 690V
  • RS Stock No. 225-5422
  • Mfr. Part No. 3NW7034
Each
HK$579.10
Better World
ABB System Pro M Compact S200M MCB, 2P, 6A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-015
  • Mfr. Part No. 2CDS272001R0064 S202M-C6
Each
HK$590.60
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
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