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

35 的 999+
RS PRO Residential RCCBs, 40A, 4 Pole, 30mA, Type B, 400V
  • RS庫存編號 284-2376
个
HK$6,804.40
RS PRO 3A Violet Blade Car Fuse, 32V dc
  • RS庫存編號 563-740
个（每托盘 10 ）
HK$5.03
Wickmann 100A Black Bolt Down Car Fuse, 32V dc
  • RS庫存編號 174-0672
  • 製造零件編號 0498100.M
个（每托盘 10 ）
HK$14.12
Littelfuse 300A Grey Time Delay Car Fuse, 32V dc
  • RS庫存編號 878-1296
  • 製造零件編號 0298300.ZXH
个
HK$85.90
Littelfuse SMD Non Resettable Fuse 30A, 125V ac
  • RS庫存編號 769-3741
  • 製造零件編號 0456030.ER
个（每托盘 5 ）
HK$28.04
Better World
Schneider Electric, ComPacT NSX MCCB 3P 250A, Fixed Mount
  • RS庫存編號 254-6359
  • 製造零件編號 C25H3TM250
个
HK$19,063.60
Schneider Electric, ComPacT MCCB 4P 320A, Fixed Mount
  • RS庫存編號 260-8104
  • 製造零件編號 C40F4TM320D
个
HK$38,418.54
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS庫存編號 260-7938
  • 製造零件編號 C25N34V250
个
HK$36,428.48
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS庫存編號 260-7944
  • 製造零件編號 C25N4
个
HK$13,113.49
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS庫存編號 260-7975
  • 製造零件編號 C25R3TM250
个
HK$23,301.34
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 55 kA, Fixed Mount
  • RS庫存編號 270-3490
  • 製造零件編號 3VA1340-5EF42-0AA0
个
HK$37,072.20
Better World
Schneider Electric, PowerPact MCCB 3P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS庫存編號 219-8427
  • 製造零件編號 NLJF36600U31XTW
个
HK$60,644.53
Better World
ABB, XT4H MCCB 3P 50A, Fixed Mount
  • RS庫存編號 236-6701
  • 製造零件編號 1SDA068337R1 XT4H 160 TMA 50A FF
个
HK$5,730.70
Better World
ABB, XT2H MCCB 4P 160A, Fixed Mount
  • RS庫存編號 236-7551
  • 製造零件編號 1SDA067901R1 XT2H 160 Ekip I 160A FF
个
HK$9,187.39
Better World
Schneider Electric, ComPacT NSX MCCB 3P 40A, Fixed Mount
  • RS庫存編號 254-6282
  • 製造零件編號 C10F32D040
个
HK$7,211.75
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS庫存編號 250-4248
  • 製造零件編號 1SDA054546R1
个
HK$48,911.44
Schurter 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 1kV
  • RS庫存編號 712-4793
  • 製造零件編號 0091.0001
个
HK$119.40
Better World
Siemens, Sentron Circuit breaker 3P 630A, Breaking Capacity 150 kA, DIN Rail Mount
  • RS庫存編號 196-3579
  • 製造零件編號 3VA24637HM320AA0
个
HK$24,980.30
Schneider Electric, Compact MCCB 4P 1kA, Breaking Capacity 100 kA, Fixed Mount
  • RS庫存編號 340-927
  • 製造零件編號 C100L4FM
个
HK$57,692.24
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 10 kA, Fixed Mount
  • RS庫存編號 257-634
  • 製造零件編號 3VA5560-0MH32-0AA0
个
HK$26,116.40
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