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

24 的 999+
RS PRO 3A Resettable Fuse, 24V dc
  • RS庫存編號 279-6768
个（每托盘 10 ）
HK$6.074
Littelfuse 5A Resettable Fuse, 30V dc
  • RS庫存編號 517-6843
  • 製造零件編號 RUEF500
个（每托盘 10 ）
HK$4.42
Bourns 0.065A Resettable Fuse, 220V
  • RS庫存編號 692-6778
  • 製造零件編號 CMF-RL50-0
个（每托盘 5 ）
HK$3.46
Littelfuse 0.25A Resettable Fuse, 240V ac/dc
  • RS庫存編號 869-7362
  • 製造零件編號 LVR025K-2
个 (以毎袋：10)
HK$4.61
Lovato ModuLo P1MB MCB, 1P, 16A Curve D, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS庫存編號 825-5637
  • 製造零件編號 P1MB1PD16
个
HK$139.40
Better World
Schneider Electric Vigi RCD, 63A, 2 Pole, 100mA
  • RS庫存編號 806-7206
  • 製造零件編號 A9V03663
个
HK$2,036.10
Better World
Schneider Electric iDPN RCD, 6A, 1+N Pole, 300mA, Type C
  • RS庫存編號 790-9507
  • 製造零件編號 A9D42606
个
HK$1,505.30
Eaton RCD, 16A, 2 Pole, 10mA, Type AC
  • RS庫存編號 922-8591
  • 製造零件編號 235389 PFIM-16/2/001-MW
个
HK$1,178.60
Hager CDC RCD Switch, 63A, 2 Pole, 30mA, Type AC, 230V
  • RS庫存編號 599-828
  • 製造零件編號 CDC163F
个
HK$3,165.50
Better World
Siemens 5SV3 RCCB, 40A, 2 Pole, 30mA, Type A
  • RS庫存編號 124-7730
  • 製造零件編號 5SV3314-6KK12
个
HK$1,566.30
Schneider Electric Load Centre KQ II B RCCB, 160A, 3P+N Pole
  • RS庫存編號 654-706
  • 製造零件編號 SE160QRCD
个
HK$16,756.00
Better World
Schneider Electric Vigi iTG40 RCD, 40A, 1+N Pole, 30mA
  • RS庫存編號 191-6134
  • 製造零件編號 A9Y12640
个
HK$2,351.16
ABB F200 RCCB, 63A, 2 Pole, 100mA, Type A, 230/400V ac
  • RS庫存編號 177-5076
  • 製造零件編號 2CSF202201R2630 F202 A S-63/0,1
个
HK$2,231.16
Better World
Siemens 5SV3 RCCB, 40A, 2 Pole, 30mA, Type F, 230V ac
  • RS庫存編號 209-6567
  • 製造零件編號 5SV3314-3
个
HK$3,574.70
Better World
Schneider Electric iID RCCB, 63A, 4 Pole, 30mA, Type B-SI, 400V ac
  • RS庫存編號 248-3720
  • 製造零件編號 A9Z61463
个
HK$15,008.80
Better World
Siemens SENTRON 5SV3xxx RCCB, 63A, 4 Pole, 500mA, Type B, 400V ac
  • RS庫存編號 241-4449
  • 製造零件編號 5SV3746-4
个
HK$7,938.00
Better World
Schneider Electric RCD, 25A, 2 Pole
  • RS庫存編號 219-9171
  • 製造零件編號 M9R81225
个
HK$2,436.80
ABB F200 RCCB, 25A, 4 Pole, 300mA, Type A, 230V ac
  • RS庫存編號 225-6131
  • 製造零件編號 2CSF204101R3250 F204 A-25/0,3
个
HK$1,586.70
Better World
Schneider Electric Acti9 iIG40 RCCB, 40A, 3 Pole, 30mA, 380 → 415V ac
  • RS庫存編號 218-3908
  • 製造零件編號 A9R87740
个
HK$4,911.60
Better World
Siemens 5SV4316 RCCB, 63A, 2 Pole, 30mA, Type AC, 230V ac
  • RS庫存編號 231-8389
  • 製造零件編號 5SV4316-0
个
HK$2,073.10
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