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

21 of 999+
Limited stock
RS PRO BS 1362, F, T Fuse Kit
  • RS Stock No. 893-8546
Each
SGD111.44(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB Mini Circuit Breaker, 2P, 1A Curve C, 12 → 133 V, 220 → 240 V, 380
  • RS Stock No. 791-3322
  • Mfr. Part No. A9F54201
Each
SGD220.26(exc. GST)
In Stock
SIBA 5A F Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3436
  • Mfr. Part No. 70-010-04/5A
Each (In a Pack of 5)
SGD5.044(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 2P, 32A, Type Z, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 204-342
  • Mfr. Part No. 2CDS272001R0538
Each
SGD213.69(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 200A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9771
  • Mfr. Part No. LV525452
Each
SGD1,338.93(exc. GST)
In Stock
SIBA 3.15A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3521
  • Mfr. Part No. 70-010-05/3.15A
Each (In a Pack of 5)
SGD6.414(exc. GST)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 125A, Fixed Mount
  • RS Stock No. 236-7452
  • Mfr. Part No. 1SDA067714R1 XT2V 160 TMA 125A FF
Each
SGD1,716.00(exc. GST)
In Stock
Hager 2A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 250-8593
  • Mfr. Part No. LF302G
Each (In a Pack of 10)
SGD4.592(exc. GST)
In Stock
Eaton xPole MCB, 1+N, 16A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 230-1076
  • Mfr. Part No. 264746 PLG4-C16/1N
Each
SGD20.41(exc. GST)
In Stock
Mersen 20A FF Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0615
  • Mfr. Part No. E1014580 / FR10GR69V20
Each
SGD12.24(exc. GST)
Temporarily out of stock
ABB, Tmax XT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 237-6142
  • Mfr. Part No. 1SDA066804R1 XT1B 160 TMD 50A FF
Each
SGD378.04(exc. GST)
Temporarily out of stock
RS PRO 10A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 237-5259
Each
SGD3.88(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller xPole 2 Phase Busbar, 500V
  • RS Stock No. 245-845
  • Mfr. Part No. 132659 EVG-2PHAS/20MODUL
Each
SGD27.42(exc. GST)
In Stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 232-0095
  • Mfr. Part No. 1SDA054437R1 T5N400 FF TMA 400A
Each
SGD1,371.43(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)
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)
In Stock
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9686
Each (In a Pack of 10)
SGD0.597(exc. GST)
In Stock
Eaton 10A Red Automotive Car Fuse, 32V dc No
  • RS Stock No. 848-2558
  • Mfr. Part No. ATC-10
Each
SGD4.95(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3+N, 6A Curve D, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 256-732
  • Mfr. Part No. 278992 FAZ-D6/3N
Each
SGD350.58(exc. GST)
In Stock
Schneider Electric Acti 9 Earth & Neutral Terminal Bar for use with Screw Support Busbar
  • RS Stock No. 187-807
  • Mfr. Part No. 99217
Each
SGD46.74(exc. GST)
1
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