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

47266 產品顯示為 Fuses & Circuit Breakers

8 of 999+
Better World
Schneider Electric Acti 9 2 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2720
  • Mfr. Part No. A9XPH212
Each
HK$192.90
Schurter Thermal Magnetic Circuit Breaker - Single Pole 240 V ac, 32V dc Voltage Rating, 5A Current Rating
  • RS Stock No. 539-3701
  • Mfr. Part No. 4404.0007
Each
HK$27.10
Eaton 10A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 412-324
  • Mfr. Part No. TDC10-10A
Each (In a Pack of 10)
HK$12.62
Bourns 1.5A Resettable Fuse, 15V
  • RS Stock No. 245-9142
  • Mfr. Part No. MF-LSMF150X-2
Each (On a Tape of 10)
HK$4.37
Bourns 1.25A Resettable Fuse, 15V
  • RS Stock No. 245-9136
  • Mfr. Part No. MF-LSMF125X-2
Each (On a Reel of 3000)
HK$2.477
RS PRO 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-334
Each (In a Pack of 10)
HK$2.58
Bourns SMD Non Resettable Fuse 3A, 32V dc
  • RS Stock No. 692-5003P
  • Mfr. Part No. SF-0603S300-2
Each (Supplied on a Reel)
HK$3.64
Eaton PC Board Non Resettable Fuse, Radial 1A, 250V ac
  • RS Stock No. 769-3261
  • Mfr. Part No. SR-5F-1A-BK
Each (In a Pack of 5)
HK$18.86
Hager RCBO, 20A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type AC
  • RS Stock No. 251-2018
  • Mfr. Part No. ADC720F
Each
HK$2,222.67
Littelfuse Inline Fuse Holder for ATO Fuse, 32V dc
  • RS Stock No. 787-4350
  • Mfr. Part No. 277.6106.0002
Each
HK$29.10
Better World
Schneider Electric Acti 9 Acti9 iDT40K MCB, 3P, 32A Curve C, 400V AC
  • RS Stock No. 239-9977
  • Mfr. Part No. A9P71732
Each
HK$1,136.60
Better World
Siemens, SENTRON Circuit breaker 4P 160A, DIN Rail Mount
  • RS Stock No. 224-7905
  • Mfr. Part No. 3VA1216-5GF42-0AA0
Each
HK$11,352.60
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4678
  • Mfr. Part No. 3VA2140-7MP32-0AA0
Each
HK$11,072.30
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2711
  • Mfr. Part No. A9XPH106
Each
HK$89.10
RS PRO 3A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-6007
Each (In a Pack of 10)
HK$3.29
Better World
Siemens SENTRON 5SY MCB, 1P, 2A, Type A
  • RS Stock No. 232-2282
  • Mfr. Part No. 5SY4102-5
Each
HK$385.00
Eaton 200A Cartridge Fuse, 22 x 42mm
  • RS Stock No. 182-1445
  • Mfr. Part No. JJS-200
Each
HK$1,509.80
Wickmann 0.5A Resettable Fuse, 72 V dc, 72V ac
  • RS Stock No. 174-0806
  • Mfr. Part No. RF2630-000
Each (In a Pack of 10)
HK$3.53
Bulgin 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 782-3683
  • Mfr. Part No. FX0430/48
Each
HK$69.20
Littelfuse 60A Inline Fuse Holder for Maxi Fuse, 32V dc
  • RS Stock No. 250-6285
  • Mfr. Part No. 01520001TXN
Each
HK$111.20
Results per page
1
8
2364