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

2 of 999+
Eaton 6A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-268
  • Mfr. Part No. C10G6 CYLINDRICAL FUSE 10 x 38 6A GG 500V AC
1 Pack of 10
HK$98.00
Better World
ABB System Pro M Compact S200 MCB, 2P, 1.6A Curve C, 440V AC, 125V DC, 20 kA Breaking Capacity
  • RS Stock No. 231-9678
  • Mfr. Part No. 2CDS252001R0974 S202-C 1,6
1 Box of 1
HK$605.80
Better World
Schneider Electric Busbar End Feed Unit, Canalis KS Series
  • RS Stock No. 211-0475
  • Mfr. Part No. KSA630ABG4
Each
HK$15,452.20
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 4A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3376
  • Mfr. Part No. A9F54304
Each
HK$943.70
Eaton 400mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 849-6020
  • Mfr. Part No. GDA-400MA
Each (In a Pack of 5)
HK$51.12
Wickmann Fuse Block
  • RS Stock No. 174-0730
  • Mfr. Part No. 01550900M
Each (In a Pack of 5)
HK$14.46
RS PRO 8A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 721-1585
Each (In a Pack of 10)
HK$7.09
Phoenix Contact Mounting Base for use with PT Series
  • RS Stock No. 768-1195
  • Mfr. Part No. 2839363
Each
HK$880.80
Mersen 315mA FA Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 188-6546
  • Mfr. Part No. Z084018
Each (In a Pack of 10)
HK$29.50
Better World
Schneider Electric Linergy Busbar, 690V, 45mm Pitch
  • RS Stock No. 400-2000
  • Mfr. Part No. GV2G445
Each
HK$177.60
Better World
Siemens Sentron 5SY4 MCB, 1P, 1.6A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 622-0064
  • Mfr. Part No. 5SY4115-7
Each
HK$375.10
RS PRO 20A Solid Link for A1 Fuses
  • RS Stock No. 242-1049
Each (In a Pack of 5)
HK$25.24
Schurter 30A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 703-2675
  • Mfr. Part No. 8020.0607.G
Each (In a Pack of 10)
HK$9.24
Littelfuse 1.6A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 738-2794
  • Mfr. Part No. 021801.6MXP
Each (In a Pack of 10)
HK$3.84
Eaton 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 2P, 690V ac
  • RS Stock No. 765-2945
  • Mfr. Part No. CHM2DU
Each
HK$98.90
Better World
Schneider Electric Acti 9 C60-PV MCB, 2P, 20A Curve B, 800V DC, 3 kA Breaking Capacity
  • RS Stock No. 776-3622
  • Mfr. Part No. A9N61652
Each
HK$2,388.70
Eaton 2A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4147
  • Mfr. Part No. LP-CC-2
Each
HK$564.30
Eaton 2A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 415-109
  • Mfr. Part No. NIT2
Each (In a Pack of 5)
HK$64.04
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
Littelfuse SMD Non Resettable Fuse 750mA, 125V
  • RS Stock No. 738-2882P
  • Mfr. Part No. 0154.750DRT
Each (Supplied on a Reel)
HK$21.44
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