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

32 的 999+
Littelfuse SMD Non Resettable Fuse 3A, 125V ac
  • RS庫存編號 769-3731
  • 製造零件編號 0452003.NRL
个（每托盘 10 ）
HK$13.63
ABB F200 RCCB, 40A, 2 Pole, 30mA, Type AC, 230V ac
  • RS庫存編號 537-7361
  • 製造零件編號 2CSF202001R1400 F202 AC-40/0,03
个
HK$859.40
Eaton xEffect - FRCmM RCCB, 16A, 4 Pole, 30mA, Type A, 240/415V ac
  • RS庫存編號 123-227
  • 製造零件編號 170285 FRCMM-16/4/003-A
个
HK$1,665.09
ABB RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS庫存編號 201-6892
  • 製造零件編號 2CSR275180R1105 DS201 M B10 A30
个
HK$1,174.90
ABB RCBO, 25A Current Rating, 2P Poles, 300mA Trip Sensitivity, System Pro M Compact Range
  • RS庫存編號 201-6922
  • 製造零件編號 2CSR255180R3255
个
HK$2,161.18
ABB RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity
  • RS庫存編號 231-9921
  • 製造零件編號 2CSR255080R1064 DS201 C6 AC30
毎盒：1 个
HK$1,443.00
Better World
Siemens RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS庫存編號 243-6190
  • 製造零件編號 5SU1326-6FP16
个
HK$1,222.00
Littelfuse PC Board Non Resettable Fuse, Axial 2A, 125V ac/dc
  • RS庫存編號 541-3170
  • 製造零件編號 0473002.HAT1L
个（每托盘 10 ）
HK$10.80
Schneider Electric Vigi iC60 RCD, 63A, 3 Pole, 30mA
  • RS庫存編號 230-6695
  • 製造零件編號 A9V54363
个
HK$5,378.84
Better World
Siemens SENTRON 5SY4 MCB, 3+N, 63A Curve B
  • RS庫存編號 216-6018
  • 製造零件編號 5SY4663-6
个
HK$2,021.70
Limitor Thermal Fuse +73°C 15 A, 250V ac
  • RS庫存編號 797-6046
  • 製造零件編號 SF 070 R
个（每托盘 10 ）
HK$9.27
Mersen 10A Ceramic Cartridge Fuse, 8 x 32mm
  • RS庫存編號 230-2982
  • 製造零件編號 A214613
个（每托盘 10 ）
HK$12.07
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
630A NH Fuse, 71 x 54 x 150mm, 400V ac
  • RS庫存編號 262-262
  • 製造零件編號 630NHG2B-400 NH FUSE 630A 400V GG/GL SIZE 2
1 包 3 套
HK$908.70
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
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 S200M MCB, 4P, 63A Curve D, 400V AC, 15 kA Breaking Capacity
  • RS庫存編號 231-9778
  • 製造零件編號 2CDS274001R0631 S204M D 63A - 15 KA
毎盒：1 个
HK$1,721.23
Siemens 5SY41 5SY MCB Mini Circuit Breaker, 1P, 6A, Type A, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS庫存編號 266-9592
  • 製造零件編號 5SY4115-5
个
HK$415.30
Mersen 100A size 30 FF Square Body Fuse, aR, 700V
  • RS庫存編號 304-1969
  • 製造零件編號 T300052
个
HK$1,018.20
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