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

47282 產品顯示為 Fuses & Circuit Breakers

29 的 999+
Carling Technologies Thermal Circuit Breaker - CLB Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS庫存編號 881-1079
  • 製造零件編號 CLB-153-11A3N-B-A
个（每托盘 10 ）
HK$29.66
Limitor Thermal Fuse +80°C 2.5 A, 250V ac
  • RS庫存編號 204-7427
  • 製造零件編號 Q82 A 80 05 100
个
HK$37.50
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V Voltage Rating DIN Rail Mount, 25A Current
  • RS庫存編號 272-814
  • 製造零件編號 GV3L25
个
HK$1,348.10
Better World
Schneider Electric Multi 9 C60N MCB, 3P, 10A Curve D, 10 kA Breaking Capacity
  • RS庫存編號 214-2078
  • 製造零件編號 M9F12310
个
HK$1,195.80
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 4P 400A, Fixed Mount
  • RS庫存編號 231-9342
  • 製造零件編號 1SDA100455R1 XT5S400 TMA400-4000 4pFF N
个
HK$14,738.79
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 4P 400A, Fixed Mount
  • RS庫存編號 231-9344
  • 製造零件編號 1SDA100466R1 XT5S 400 EkipDip LS/I 400
个
HK$15,719.07
Selco Thermal Fuse +109°C 10 A, 250V ac
  • RS庫存編號 111-7804
  • 製造零件編號 SWTC-228-3535
个（每托盘 10 ）
HK$13.99
RS PRO 100mA T Glass Cartridge Fuse, 5 x 20mm
  • RS庫存編號 610-9850
个（每托盘 10 ）
HK$5.024
Eaton 630A Centred Tag Fuse, NH3, 500V ac
  • RS庫存編號 703-8768
  • 製造零件編號 630NHG3B
个
HK$2,226.70
Siemens 250A Centred Tag Fuse, NH1, 690V
  • RS庫存編號 210-6958
  • 製造零件編號 3NE1227-2
个（每托盘 3 ）
HK$2,277.367
Better World
Siemens 3VA9 RCD, 250A, 4 Pole, Type A
  • RS庫存編號 210-3524
  • 製造零件編號 3VA9214-0RL20
个
HK$9,283.60
ABB RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS庫存編號 231-9939
  • 製造零件編號 2CSR255151R1324 DSE201 C32 A30
个
HK$681.20
Mersen 63A NH Fuse, NH000, 500V ac
  • RS庫存編號 270-3138
  • 製造零件編號 X232504
个
HK$90.20
ABB 200A Centred Tag Fuse, NH1, 500V
  • RS庫存編號 779-9996
  • 製造零件編號 OFAF1H200 1SCA022627R4490
个
HK$125.38
Eaton 315A British Standard Fuse, FM, 690 V ac, 500V dc, 80 → 85mm
  • RS庫存編號 156-9106
  • 製造零件編號 315FM
个
HK$3,356.90
Eaton 100A Centred Tag Fuse, NH1, 690V ac
  • RS庫存編號 182-1471
  • 製造零件編號 170M3812D
个 (以毎盒：6)
HK$2,992.183
Eaton 200A British Standard Fuse, A4, 415V ac, 93.7mm
  • RS庫存編號 139-978
  • 製造零件編號 DEO200
个
HK$266.00
Eaton 400A British Standard Fuse, B4, 415V ac, 110mm
  • RS庫存編號 161-060
  • 製造零件編號 ED400
个
HK$268.10
Eaton 16A British Standard Fuse, A2, 660V ac, 73mm
  • RS庫存編號 415-143
  • 製造零件編號 TIA16
个（每托盘 5 ）
HK$106.38
TE Connectivity Thermal Magnetic Circuit Breakers - Potter & Brumfield W54 Single Pole 250V ac Voltage Rating Panel
  • RS庫存編號 240-8954
  • 製造零件編號 3-1393250-2
个 (以毎袋：100)
HK$51.169
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