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 的 999+
暫時缺貨
Better World
Schneider Electric Acti 9 C60-PV MCB, 2P, 25A Curve B, 800V DC, 3 kA Breaking Capacity
  • RS庫存編號 776-3626
  • 製造零件編號 A9N61660
个
HK$2,939.00
有庫存
Better World
ABB System Pro M Compact S200 MCB, 2P, 6A Curve D, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS庫存編號 746-7854
  • 製造零件編號 2CDS252001R0061 S202-D6
个
HK$537.30
暫時缺貨
Lovato RCBO, 40A Current Rating, 1P + N Poles, 30mA Trip Sensitivity, Type A, P1RE1NC Range
  • RS庫存編號 276-5687
  • 製造零件編號 P1RE1NC40A030
个
HK$1,455.85
有庫存
RS PRO PC Board Non Resettable Fuse, Radial 2.5A, 250V
  • RS庫存編號 767-5159
个（每托盘 10 ）
HK$1.88
有庫存
Eaton 1A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS庫存編號 537-1442
  • 製造零件編號 S501-1-R
个（每托盘 10 ）
HK$4.28
有庫存
Siemens 25A NH Fuse, NH000, 500V ac
  • RS庫存編號 397-379
  • 製造零件編號 3NA3810
个（每托盘 3 ）
HK$60.667
暫時缺貨
Wurth Elektronik 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS庫存編號 893-0586
  • 製造零件編號 696106003002
个（每托盘 10 ）
HK$4.38
有庫存
SIBA 200A Centred Tag Fuse, NH1, 500V ac
  • RS庫存編號 421-788
  • 製造零件編號 20-003-13/200A
个
HK$218.20
有庫存
Bourns Non Resettable Fuse 750mA, 125V ac
  • RS庫存編號 191-4617
  • 製造零件編號 SF-2410FP075T-2
个
HK$4.28
有庫存
Better World
ABB System Pro M Compact S200M MCB, 2P, 32A Curve D
  • RS庫存編號 231-9727
  • 製造零件編號 2CDS272001R0321 S202M D 32A - 15 KA
毎盒：1 个
HK$455.30
有庫存
Better World
Siemens SENTRON 5SV6016 Fire Safety Circuit Breaker, 2P, 16A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS庫存編號 189-3186
  • 製造零件編號 5SV6016-7KK16
个
HK$1,366.70
有庫存
Eaton 25A Slow-Blow Cartridge Fuse, 14 x 51mm
  • RS庫存編號 228-676
  • 製造零件編號 C14M25 CYLINDRICAL FUSE 14 x 51 25A AM 690V AC
1 包 10 套
HK$220.90
有庫存
SIBA 10A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS庫存編號 783-3330
  • 製造零件編號 70-007-65/10A
个（每托盘 10 ）
HK$4.87
有庫存
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 63A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS庫存編號 791-3543
  • 製造零件編號 A9F55263
个
HK$869.90
有庫存
RS PRO 16A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS庫存編號 209-9311
个（每托盘 10 ）
HK$10.21
有庫存
Better World
Siemens Sentron 5SY4 MCB, 2P, 10A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS庫存編號 772-1303
  • 製造零件編號 5SY4210-7
个
HK$720.70
有庫存
RS PRO 3A T Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 911-3405
个（每托盘 10 ）
HK$3.39
正在逐步停售
RS PRO 1A T Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 563-558
个（每托盘 10 ）
HK$3.07
暫時缺貨
ABB 800A Tag Fuse, NH3, 500V
  • RS庫存編號 251-3493
  • 製造零件編號 1SCA022627R7240
个
HK$918.43
有庫存
ETA Thermal Circuit Breaker - 3120-N 2 Pole 50 V DC, 240 V AC Voltage Rating, 20A Current Rating
  • RS庫存編號 210-2071
  • 製造零件編號 3120-N521-H7T1-W01D-20A
个
HK$383.70
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