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

47290 產品顯示為 Fuses & Circuit Breakers

2356 的 999+
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS庫存編號 270-4030
  • 製造零件編號 3VA2110-8HN46-0AA0
个
HK$13,367.40
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS庫存編號 270-4112
  • 製造零件編號 3VA2116-7KP46-0AA0
个
HK$25,866.80
Better World
ABB, Tmax XT MCCB 4P 160A, Fixed Mount
  • RS庫存編號 236-6675
  • 製造零件編號 1SDA068295R1 XT4S 160 BLOC FF
个
HK$5,229.20
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 200 kA, Fixed Mount
  • RS庫存編號 270-4068
  • 製造零件編號 3VA2116-0KQ36-0AA0
个
HK$27,067.40
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS庫存編號 270-4037
  • 製造零件編號 3VA2110-8JQ36-0AA0
个
HK$19,371.40
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS庫存編號 270-4647
  • 製造零件編號 3VA2140-7HK46-0AA0
个
HK$10,490.30
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS庫存編號 270-4521
  • 製造零件編號 3VA2125-0MS36-0AA0
个
HK$8,779.40
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS庫存編號 270-4034
  • 製造零件編號 3VA2110-8JP46-0AA0
个
HK$18,895.10
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS庫存編號 270-4027
  • 製造零件編號 3VA2110-8HN36-0AA0
个
HK$10,807.60
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS庫存編號 270-4100
  • 製造零件編號 3VA2116-7JP32-0AA0
个
HK$19,520.80
ABB, XT2S MCCB 4P 2A, Fixed Mount
  • RS庫存編號 236-7359
  • 製造零件編號 1SDA067562R1 XT2S 160 TMD 2A FF
个
HK$3,666.70
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 200 kA, Fixed Mount
  • RS庫存編號 270-4605
  • 製造零件編號 3VA2140-0KP32-0AA0
个
HK$18,904.90
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS庫存編號 270-4046
  • 製造零件編號 3VA2110-8KQ36-0AA0
个
HK$20,706.20
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS庫存編號 270-4520
  • 製造零件編號 3VA2125-0MS32-0AA0
个
HK$8,392.00
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 200 kA, Fixed Mount
  • RS庫存編號 270-4059
  • 製造零件編號 3VA2116-0HN36-0AA0
个
HK$16,816.00
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 200 kA, Fixed Mount
  • RS庫存編號 270-4067
  • 製造零件編號 3VA2116-0KQ32-0AA0
个
HK$26,491.90
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS庫存編號 270-4532
  • 製造零件編號 3VA2125-6HM42-0AA0
个
HK$12,863.70
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 200 kA, Fixed Mount
  • RS庫存編號 270-4070
  • 製造零件編號 3VA2116-0KQ46-0AA0
个
HK$31,026.50
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS庫存編號 270-4077
  • 製造零件編號 3VA2116-6JP42-0AA0
个
HK$21,565.60
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 200 kA, Fixed Mount
  • RS庫存編號 270-4607
  • 製造零件編號 3VA2140-0KP42-0AA0
个
HK$22,060.80
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