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

4 of 999+
Littelfuse SMD Non Resettable Fuse 375mA, 125V
  • RS Stock No. 738-2898P
  • Mfr. Part No. 0154.375DRT
Each (Supplied on a Reel)
HK$24.59
RS PRO 10A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8111
Each (In a Pack of 20)
HK$2.69
Legrand 8A Ceramic Cartridge Fuse, 8 x 32mm
  • RS Stock No. 266-3090
  • Mfr. Part No. 0 124 08
1 Box of 10
HK$374.70
Eaton Earthing Strap
  • RS Stock No. 244-794
  • Mfr. Part No. 141845 XNAE4-42
1 Pack of 20
HK$1,202.90
RS PRO 10A Slotted Tag Fuse, A1, 250 V dc, 415V ac, 44.5mm
  • RS Stock No. 221-3691
Each (In a Pack of 10)
HK$27.31
Siemens SENTRON 5SM2xxx RCCB, 40A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 241-4428
  • Mfr. Part No. 5SM2342-6
Each
HK$887.50
Mersen 25A Slow-Blow Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 247-2711
  • Mfr. Part No. C213603
1 Box of 10
HK$253.10
Better World
Siemens SENTRON MCB, 1P, 16A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 189-3191
  • Mfr. Part No. 5SL6116-7
Each
HK$100.90
Better World
Schneider Electric RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 790-9248
  • Mfr. Part No. A9D11210
Each
HK$1,925.50
Bulgin 13A Base Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 213-7564
  • Mfr. Part No. FX0326
Each (In a Pack of 5)
HK$32.76
ABB FH200 RCCB, 63A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 186-3457
  • Mfr. Part No. 2CSF202002R1630
Each
HK$742.30
Littelfuse 60A Inline Fuse Holder for Maxi Fuse
  • RS Stock No. 787-4375
  • Mfr. Part No. 01520001TXN940
Each
HK$99.00
Legrand 10A F Ceramic Cartridge Fuse, 8.5 x 32mm
  • RS Stock No. 293-8193
  • Mfr. Part No. 0 123 10
Each (In a Pack of 10)
HK$28.82
Eaton 16A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-265
  • Mfr. Part No. C10G16 CYLINDRICAL FUSE 10 x 38 16A GG 500V AC
1 Pack of 10
HK$98.00
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 135-805
  • Mfr. Part No. 2798530
Each (In a Pack of 10)
HK$985.74
ETI 63A Bottle Fuse Holder, 1P, 400V ac
  • RS Stock No. 289-8843
  • Mfr. Part No. 2232003
Each
HK$14.70
RS PRO 5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6045
Each (In a Pack of 10)
HK$3.283
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 806-7228
  • Mfr. Part No. A9XPH112
Each
HK$165.10
Littelfuse 0.2A Resettable Fuse, 30V dc
  • RS Stock No. 517-7105
  • Mfr. Part No. MINISMDC020F-2
Each (In a Pack of 10)
HK$2.22
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 6A Curve C, 100 → 130V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9239
  • Mfr. Part No. A9F77206
Each
HK$932.50
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