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

19 of 999+
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 8A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 243-527
  • Mfr. Part No. 102106 FAZ-D8/1-NA
1 Pack of 2
SGD194.55(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 400A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9783
  • Mfr. Part No. LV540309
Each
SGD2,235.03(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 50A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9661
  • Mfr. Part No. 2CDS253001R0501 S203-D50
Each
SGD132.18(exc. GST)
In Stock
Schurter Non-Resettable Fuse Kit
  • RS Stock No. 539-3802
  • Mfr. Part No. 0034.9871
Each
SGD249.52(exc. GST)
In Stock
Eaton 10A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-0966
  • Mfr. Part No. S500-10-R
Each (In a Pack of 10)
SGD0.389(exc. GST)
In Stock
Mersen 5A F GMG Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4351
  • Mfr. Part No. ATM5
Each
SGD27.83(exc. GST)
In Stock
Legrand 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6114
  • Mfr. Part No. 0 133 02
Each (In a Box of 10)
SGD3.754(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1+N, 6A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1414
  • Mfr. Part No. 5SY4506-7
Each
SGD94.64(exc. GST)
In Stock
Eaton 250A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 182-1714
  • Mfr. Part No. 170M3816D
Each
SGD292.90(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
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)
In Stock
ABB Tmax T Motor Operator for use with MCCB
  • RS Stock No. 232-0114
  • Mfr. Part No. 1SDA054897R1 MOE 220-250VACDC T4-5
Each
SGD2,215.18(exc. GST)
In Stock
RS PRO 1A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-419
Each (In a Pack of 10)
SGD0.75(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 125A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 178-8093
  • Mfr. Part No. LV426158
Each
SGD388.14(exc. GST)
In Stock
Eaton, xEnergy MCCB 3P 100A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 454-8130
  • Mfr. Part No. 259085 NZMN1-A100
Each
SGD563.89(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 6A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-015
  • Mfr. Part No. 2CDS272001R0064 S202M-C6
Each
SGD104.05(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 40A Curve B, 440V AC, 220 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3269
  • Mfr. Part No. A9F53440
Each
SGD428.10(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
Eaton Switch Disconnector for use with Circuit Breaker
  • RS Stock No. 228-932
  • Mfr. Part No. CCP2-3-100CF
1 Pack of 2
SGD1,671.55(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)
1
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