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 Products showing for Fuses & Circuit Breakers

19 of 999+
Schurter 6.3A Inline Fuse Holder for 5 x 20mm Fuse, 32V dc
  • RS Stock No. 173-7932
  • Mfr. Part No. 8601.2000
Each (In a Box of 50)
HK$9.516
Contactum MCB, 1P, 16A Curve D, 250V AC, 10 kA Breaking Capacity
  • RS Stock No. 184-9033
  • Mfr. Part No. CPB1016D
Each
HK$44.90
Eaton 4A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 412-914
  • Mfr. Part No. TDC10-4A
Each (In a Pack of 10)
HK$3.11
Europa EUC2P EUC MCB, 2P, 2A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6531
  • Mfr. Part No. EUC2P2C
Each
HK$125.50
Eaton 63A Cartridge Fuse, 21 x 87mm
  • RS Stock No. 229-173
  • Mfr. Part No. BAO63
1 Pack of 20
HK$4,374.20
Better World
Siemens SENTRON 5SL6 MCB, 3P, 32A Curve C, 6 kA Breaking Capacity
  • RS Stock No. 202-7129
  • Mfr. Part No. 5SL6332-7
Each
HK$561.70
Littelfuse SMD Non Resettable Fuse 4A, 125V ac/dc
  • RS Stock No. 541-3669
  • Mfr. Part No. 0452004.MRL
Each (In a Pack of 10)
HK$7.26
Littelfuse 0.125A Resettable Fuse, 30V dc
  • RS Stock No. 787-4186P
  • Mfr. Part No. 1206L012WR
Each (Supplied on a Reel)
HK$2.32
Eaton 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1004
  • Mfr. Part No. S506-10-R
Each (In a Pack of 10)
HK$4.17
Eaton AFDD, 16A Current Rating, 2P Poles, 10mA Trip Sensitivity, Type B, Eaton Moeller Range
  • RS Stock No. 246-606
  • Mfr. Part No. 187201 AFDD-16/2/B/001-A
Each
HK$2,092.66
Better World
Schneider Electric 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 181-2611
  • Mfr. Part No. DF2CA10
Each (In a Box of 10)
HK$50.71
Better World
Siemens Sentron 5SV6 MCB, 2P, 6A, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 209-7508
  • Mfr. Part No. 5SV6016-6GV06
Each (In a Pack of 12)
HK$1,553.933
Better World
Schneider Electric 125A Rail Mount Fuse Holder for 22 x 58mm Fuse, 2P, 690V ac
  • RS Stock No. 482-689
  • Mfr. Part No. DF222
Each
HK$362.40
Schneider Electric, ComPacT MCCB 3P 320A, Fixed Mount
  • RS Stock No. 260-8122
  • Mfr. Part No. C40N31M320
Each
HK$27,616.84
Schurter 2.5A M Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 865-7398
  • Mfr. Part No. 0034.2520
Each (In a Pack of 10)
HK$10.77
Eaton 20A Rail Mount Fuse Holder for A1 Fuse, 1P, 690V ac
  • RS Stock No. 182-1581
  • Mfr. Part No. RS20FWH
Each
HK$1,314.10
RS PRO 10A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8099
Each (In a Pack of 5)
HK$17.24
Eaton 1A Grey Fast Acting Car Fuse, 60 V dc, 125V ac With Indicator
  • RS Stock No. 848-3857
  • Mfr. Part No. GMT-1A
Each
HK$175.70
SIBA 2A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3537
  • Mfr. Part No. 70-010-05/2A
Each (In a Pack of 5)
HK$47.60
Eaton 4A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7152
  • Mfr. Part No. MDL-4-R
Each
HK$42.00
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