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 Products showing for Fuses & Circuit Breakers

4 of 999+
Eaton 2A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4147
  • Mfr. Part No. LP-CC-2
Each
HK$564.30(exc. GST)
Littelfuse SMD Non Resettable Fuse 125mA, 125V
  • RS Stock No. 738-2905
  • Mfr. Part No. 0154.125DR
Each (In a Pack of 10)
HK$15.28(exc. GST)
RS PRO 2A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 521-2466
Each (In a Pack of 5)
HK$32.874(exc. GST)
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 16A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8603
  • Mfr. Part No. EZ9F16116
Each
HK$105.10(exc. GST)
Better World
Schneider Electric Multi 9 C60SP MCB, 3P, 32A Curve D, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2405
  • Mfr. Part No. M9F23332
Each
HK$560.50(exc. GST)
Spelsberg Consumer Unit Ake 03
  • RS Stock No. 475-1320
  • Mfr. Part No. 73550301
Each
HK$351.40(exc. GST)
Limitor Thermal Fuse +133°C 15 A, 250V ac
  • RS Stock No. 797-6055
  • Mfr. Part No. SF 129 R
Each (In a Pack of 10)
HK$7.88(exc. GST)
RS PRO Earthing Strap Metal 12 → 32mm Diameter
  • RS Stock No. 390-2448
Each (In a Pack of 10)
HK$13.08(exc. GST)
Eaton, xEnergy MCCB 3P 160A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 628-8032
  • Mfr. Part No. 259092 NZMN2-A160
1 Box of 1
HK$5,443.30(exc. GST)
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(exc. GST)
Wickmann Inline Fuse Holder
  • RS Stock No. 174-0667
  • Mfr. Part No. 01550120ZXU
Each (In a Pack of 5)
HK$7.06(exc. GST)
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(exc. GST)
RS PRO 10A British Standard Fuse, E1, 240V ac
  • RS Stock No. 521-2854
Each (In a Pack of 5)
HK$25.32(exc. GST)
Lovato ModuLo P1MB MCB, 3P, 2A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 825-5867
  • Mfr. Part No. P1MB3PD02
Each
HK$734.10(exc. GST)
RS PRO 3.15A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9377
Each (In a Pack of 10)
HK$13.38(exc. GST)
Eaton MCCB 1P 100A, Breaking Capacity 80 kA, Fixed Mount
  • RS Stock No. 628-8060
  • Mfr. Part No. 259141 PN1-100
1 Box of 1
HK$2,867.00(exc. GST)
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 400V ac
  • RS Stock No. 867-4365
  • Mfr. Part No. 3101.0215
Each (In a Pack of 10)
HK$30.92(exc. GST)
Eaton 10A British Standard Fuse, E1, 240V ac
  • RS Stock No. 418-726
  • Mfr. Part No. SSD10
Each (In a Pack of 5)
HK$24.72(exc. GST)
Littelfuse 60A Inline Fuse Holder for Maxi Fuse
  • RS Stock No. 787-4375
  • Mfr. Part No. 01520001TXN940
Each
HK$96.80(exc. GST)
ABB 16 Way Steel Consumer Unit, 100A, IP30 Housemaster
  • RS Stock No. 453-996
  • Mfr. Part No. 1SKB118142C6001
Each
HK$2,425.80(exc. GST)
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