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

47265 產品顯示為 Fuses & Circuit Breakers

5 的 999+
有庫存
Legrand 20A F Ceramic Cartridge Fuse, 8.5 x 32mm
  • RS庫存編號 293-8222
  • 製造零件編號 0 123 20
个（每托盘 10 ）
HK$15.22
暫時缺貨
Eaton 250mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS庫存編號 169-9371
  • 製造零件編號 TDC11-250MA
毎包：1000 个
HK$21,526.60
有庫存
Siemens SIRIUS 3 Phase Busbar Protector, 690V
  • RS庫存編號 755-2971
  • 製造零件編號 3RV2925-5EB
个
HK$362.20
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
Eaton RCBO, 16A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS庫存編號 123-284
  • 製造零件編號 170740 FRBMM-C16/3/003-A
个
HK$1,627.03
有庫存
Eaton RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, PXK Range
  • RS庫存編號 183-3545
  • 製造零件編號 236964 PXK-C16/1N/003-A
个
HK$595.40
有庫存
Eaton 32A British Standard Fuse, A2, 500V, 73.5mm
  • RS庫存編號 156-8608
  • 製造零件編號 AAO32M50
个（每托盘 5 ）
HK$44.44
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
有庫存
Eaton 250mA F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 537-1262
  • 製造零件編號 S500-250-R
个（每托盘 10 ）
HK$23.98
有庫存
Sato Parts 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS庫存編號 372-1047
  • 製造零件編號 F-100
个（每托盘 5 ）
HK$13.84
有庫存
RS PRO 5A F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 610-9721
个（每托盘 10 ）
HK$2.80
正在逐步停售
RS PRO 250mA F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 563-469
个（每托盘 10 ）
HK$2.22
有庫存
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 13A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS庫存編號 776-3200
  • 製造零件編號 A9N61529
个
HK$1,511.40
有庫存
Littelfuse 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 541-4410
  • 製造零件編號 0217002.MXP
个（每托盘 10 ）
HK$2.78
暫時缺貨
Better World
Siemens SENTRON 5SY6 MCB, 2P, 32A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS庫存編號 209-6017
  • 製造零件編號 5SY6232-7
个
HK$821.70
有庫存
ABB RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS庫存編號 201-6943
  • 製造零件編號 2CSR255080R1405 DS201 B40 AC30
个
HK$1,034.00
有限的庫存
ETA Thermal Magnetic Circuit Breaker - 201 Single Pole, 15A Current Rating
  • RS庫存編號 333-287
  • 製造零件編號 201-15A
个
HK$311.60
有庫存
Better World
Siemens Sentron 5SY4 MCB, 3P, 3A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS庫存編號 622-0092
  • 製造零件編號 5SY4303-7
个
HK$786.60
有庫存
Eaton 125A Bolted Tag Fuse, B2, 415V ac, 133mm
  • RS庫存編號 181-8525
  • 製造零件編號 EFS125
个
HK$1,330.10
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