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

49110 Products showing for Fuses & Circuit Breakers

20 of 999+
In Stock
Littelfuse 1A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4678
  • Mfr. Part No. 0215001.MXP
Each (In a Pack of 10)
SGD1.756(exc. GST)
Temporarily out of stock
Eaton xComfort ECO Distribution Board Enclosure, 12 Way
  • RS Stock No. 258-477
  • Mfr. Part No. 280356 BC-U-2/24-ECO
Each
SGD136.29(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 24 Way
  • RS Stock No. 255-208
  • Mfr. Part No. 240732 BF-O-2/48-A
Each
SGD398.45(exc. GST)
In Stock
RS PRO MCB, 2P, 16A Curve B, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0160
Each
SGD32.02(exc. GST)
Temporarily out of stock
Eaton RCBO, 32A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type B, FRBm6 Range
  • RS Stock No. 123-315
  • Mfr. Part No. 170808 FRBM6-B32/2/01-A
Each
SGD321.04(exc. GST)
Last RS stock
RS PRO 12A M Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 182-4004P
Each (Supplied in a Box)
SGD12.498(exc. GST)
In Stock
Schneider Electric Resi9 Two Phase Distribution Board, 90 A
  • RS Stock No. 276-8949
  • Mfr. Part No. R9H13402
Each
SGD85.24(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 32A, Fixed Mount
  • RS Stock No. 254-6276
  • Mfr. Part No. C10B3TM032
Each
SGD816.96(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 63A Curve C, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7738
  • Mfr. Part No. 2CDS252001R0634 S202-C63
Each
SGD52.05(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40N MCB, 1P, 16A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 191-6109
  • Mfr. Part No. A9P24616
Each
SGD219.72(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8656
  • Mfr. Part No. EZ9D16820
Each
SGD51.65(exc. GST)
In Stock
Legrand 3.15A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 266-3067
  • Mfr. Part No. 0 102 30
1 Box of 10
SGD24.09(exc. GST)
Temporarily out of stock
Siemens 4A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6902
  • Mfr. Part No. 3NA3804-6
Each (In a Pack of 3)
SGD74.413(exc. GST)
In Stock
Eaton 125A Centred Tag Fuse, NH02, 500V ac
  • RS Stock No. 703-8737
  • Mfr. Part No. 125NHG02B
Each
SGD18.02(exc. GST)
In Stock
Siemens 500A Centred Tag Fuse, NH3, 690V
  • RS Stock No. 210-6898
  • Mfr. Part No. 3NA3365-6
Each (In a Pack of 3)
SGD204.17(exc. GST)
Temporarily out of stock
ABB, Tmax XT MCCB 4P 125A, Fixed Mount
  • RS Stock No. 236-7291
  • Mfr. Part No. 1SDA067463R1 XT1H 160 TMD 125A FF
Each
SGD994.30(exc. GST)
In Stock
Eaton 100A Rail Mount Fuse Holder for 22 x 58mm Fuse, 1P, 690V ac
  • RS Stock No. 703-8579
  • Mfr. Part No. CH221DU
Each
SGD63.26(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 20A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3212
  • Mfr. Part No. A9N61532
Each
SGD99.67(exc. GST)
Temporarily out of stock
Eaton 70A Centred Tag Fuse
  • RS Stock No. 854-9001
  • Mfr. Part No. LPJ-70SP
Each
SGD325.54(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 2A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9554
  • Mfr. Part No. 2CDS253001R0021 S203-D2
Each
SGD134.08(exc. GST)
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