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

108 of 999+
Being discontinued
RS PRO 400mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-615
Each (In a Pack of 10)
SGD0.661(exc. GST)
Temporarily out of stock
ABB SU200 M MCB, 2P, 2A Curve C, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-859
  • Mfr. Part No. 2CDS272337R0024
Each
SGD202.15(exc. GST)
In Stock
Schneider Electric TransferPacT Electronic Circuit Breaker 63A TA100, Fixed
  • RS Stock No. 272-7579
  • Mfr. Part No. TA10D2S0633TPE
Each
SGD2,122.84(exc. GST)
In Stock
Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 500V ac
  • RS Stock No. 287-5799
  • Mfr. Part No. N218213
Each
SGD23.91(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 32A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3350
  • Mfr. Part No. A9F54232
Each
SGD249.60(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 4A Curve D, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7845
  • Mfr. Part No. 2CDS252001R0041 S202-D4
Each
SGD90.91(exc. GST)
In Stock
Siemens 32A Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 269-8374
  • Mfr. Part No. 3NW7014
Each
SGD18.87(exc. GST)
In Stock
Wickmann 0.1A Resettable Fuse, 60V dc
  • RS Stock No. 174-0827
  • Mfr. Part No. 60R010XU
Each (In a Pack of 50)
SGD0.501(exc. GST)
Temporarily out of stock
Siemens 60A Fuse Holder for 118mm Fuse, 2P, 600V
  • RS Stock No. 608-780
  • Mfr. Part No. 3NW7521-5HG
1 Pack of 3
SGD255.88(exc. GST)
In Stock
ABB System Pro M Compact S200L MCB, 1P, 10A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 183-3628
  • Mfr. Part No. 2CDS241701R0104
Each
SGD28.74(exc. GST)
In Stock
Mersen 1A F GMG Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4345
  • Mfr. Part No. ATM1
Each
SGD32.25(exc. GST)
Temporarily out of stock
RS PRO 1.5A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8042
Each (In a Box of 500)
SGD0.912(exc. GST)
In Stock
Allen Bradley MCCB Molded Case Circuit Breaker 3P 100A
  • RS Stock No. 255-1634
  • Mfr. Part No. 140G-G2C3-D10
Each
SGD547.05(exc. GST)
Temporarily out of stock
Better World
Schneider Electric MCCB, Clip-On
  • RS Stock No. 178-7863
  • Mfr. Part No. LV426842
Each
SGD219.71(exc. GST)
In Stock
Littelfuse 0.5A Resettable Fuse, 72V
  • RS Stock No. 517-6635
  • Mfr. Part No. RXEF050
Each (In a Pack of 10)
SGD0.394(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 4P, 16A Curve B, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 746-8084
  • Mfr. Part No. 2CDS274001R0165 S204M-B16
Each
SGD189.09(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-9939
  • Mfr. Part No. 1SDA070802R1
Each
SGD7,895.40(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 10A Curve K, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-821
  • Mfr. Part No. 2CDS271061R0427
Each
SGD136.50(exc. GST)
In Stock
Better World
ABB S200C MCB, 2P, 16A Curve C, 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-1625
  • Mfr. Part No. 2CDS252280R0164
Each
SGD74.90(exc. GST)
In Stock
Legrand 4A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6115
  • Mfr. Part No. 0 133 04
Each (In a Box of 10)
SGD3.904(exc. GST)
1
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