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

21 的 999+
ABB DDA203 RCD, 63A, 3 Pole, 100mA
  • RS庫存編號 231-9891
  • 製造零件編號 2CSB203001R2630 DDA203 AC-63/0.1
个
HK$1,572.51
ABB RCBO, 16A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type C
  • RS庫存編號 231-9957
  • 製造零件編號 2CSR256140R1164 DS203NC C16 A30
个
HK$1,811.70
Europa EUC1P EUB MCB, 1P, 20A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS庫存編號 849-6471
  • 製造零件編號 EUC1P20B
个
HK$62.00
Europa EUC1P EUB MCB, 1P, 4A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS庫存編號 849-6456
  • 製造零件編號 EUC1P4B
个
HK$72.90
Europa EUC3P EUC MCB, 3P, 25A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS庫存編號 849-6597
  • 製造零件編號 EUC3P25C
个
HK$151.30
Eaton xPole MCB, 3P, 63A Curve C, 400V AC, 48V DC, 10 kA Breaking Capacity
  • RS庫存編號 864-4415
  • 製造零件編號 242480 PLSM-C63/3-MW
个
HK$872.90
Eaton xEffect MCB, 1P, 3A Curve C, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS庫存編號 922-7002
  • 製造零件編號 278551 FAZ-C3/1
个
HK$237.50
Eaton xEffect MCB, 1P, 1A Curve D, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS庫存編號 922-7024
  • 製造零件編號 278569 FAZ-D1/1
个
HK$249.20
Eaton xEffect MCB, 1P, 16A Curve C, 240 → 415V AC, 48V DC, 10 kA Breaking Capacity
  • RS庫存編號 922-6905
  • 製造零件編號 102090 FAZ-C16/1-NA
个
HK$346.20
Eaton xEffect MCB, 1P, 6A Curve D, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS庫存編號 922-7033
  • 製造零件編號 278578 FAZ-D6/1
个
HK$251.70
Schneider Electric, ComPacT NSX Circuit breaker 2P 160A, Breaking Capacity 25 KA
  • RS庫存編號 119-398
  • 製造零件編號 C16M2TM160
个
HK$12,589.32
Eaton xEffect MCB, 1P, 10A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS庫存編號 769-4536
  • 製造零件編號 239035 FAZ6-C10/1
个
HK$160.70
Eaton xEffect MCB, 2P, 6A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS庫存編號 769-4700
  • 製造零件編號 239059 FAZ6-C6/1N
个
HK$579.60
Better World
ABB System Pro M Compact S200 MCB, 3P, 4A Curve C, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS庫存編號 746-7753
  • 製造零件編號 2CDS253001R0044 S203-C4
个
HK$734.64
Better World
ABB System Pro M Compact S200 MCB, 3P, 63A Curve K, 400V AC, 10 kA Breaking Capacity
  • RS庫存編號 746-8043
  • 製造零件編號 2CDS253001R0607 S203-K63
个
HK$1,258.90
Better World
ABB System Pro M Compact S200 MCB, 1P, 50A Curve B, 230V AC, 72V DC, 6 kA Breaking Capacity
  • RS庫存編號 746-7551
  • 製造零件編號 2CDS251001R0505 S201-B50
个
HK$143.80
Better World
Siemens Sentron 5SY4 MCB, 2P, 6A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS庫存編號 772-1290
  • 製造零件編號 5SY4206-8
个
HK$819.80
Eaton xEffect MCB, 1P, 2A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS庫存編號 769-4570
  • 製造零件編號 239031 FAZ6-C2/1
个
HK$242.40
Eaton xEffect MCB, 2P, 32A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS庫存編號 769-4643
  • 製造零件編號 239106 FAZ6-C32/2
个
HK$365.80
Eaton xEffect MCB, 1P, 32A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS庫存編號 769-4797
  • 製造零件編號 168066 FAZ6-D32/1
个
HK$185.70
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