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

107 of 999+
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 63A Curve C, 440V AC, 180V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3307
  • Mfr. Part No. A9F87363
Each
SGD731.75(exc. GST)
In Stock
Staubli 500mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 564-645
  • Mfr. Part No. 69.0012
Each
SGD3.73(exc. GST)
In Stock
Better World
Schneider Electric Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 776-3830
  • Mfr. Part No. A9L16617
Each
SGD731.92(exc. GST)
In Stock
RS PRO MCB, 1P, 16A Curve B, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0163
Each
SGD13.18(exc. GST)
In Stock
Hager NEN MCB, 2P, 32A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4966
  • Mfr. Part No. NEN232
Each
SGD213.19(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti9 iID RCCB, 40A, 4 Pole, 30mA, 400V
  • RS Stock No. 218-3909
  • Mfr. Part No. A9Z51440
Each
SGD1,262.01(exc. GST)
In Stock
ABB F200 RCCB, 63A, 4 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 225-6138
  • Mfr. Part No. 2CSF204123R1630 F204 A-63/0.03
Each
SGD406.05(exc. GST)
In Stock
Littelfuse 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 787-4120P
  • Mfr. Part No. 0287015.PXCN
Each (Supplied in a Bag)
SGD0.472(exc. GST)
In Stock
RS PRO MCB, 1P, 2A Curve C, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0190
Each
SGD14.47(exc. GST)
In Stock
Eaton 6A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 414-617
  • Mfr. Part No. NIT6
Each (In a Pack of 5)
SGD10.55(exc. GST)
In Stock
RS PRO 125A Slotted Tag Fuse, 17.4 x 42mm, 240V, 42mm
  • RS Stock No. 188-4661
Each
SGD46.10(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 25A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 245-084
  • Mfr. Part No. A9D05825
Each
SGD333.33(exc. GST)
Temporarily out of stock
Eaton RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBdM Range
  • RS Stock No. 121-303
  • Mfr. Part No. 168268 FRBDM-C10/1N/003-G/A
Each
SGD309.51(exc. GST)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 5kA, 450V (Volts), DIN Rail Mount
  • RS Stock No. 254-4807
  • Mfr. Part No. 2803069
Each
SGD309.01(exc. GST)
In Stock
Sato Parts 5A Base Mount Fuse Holder for 5 x 20mm Fuse, 125V ac
  • RS Stock No. 523-4933
  • Mfr. Part No. F-60-B
Each
SGD2.19(exc. GST)
In Stock
Hager CDA RCD Switch, 40A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 251-2024
  • Mfr. Part No. CDA743F
Each
SGD208.93(exc. GST)
In Stock
Siemens 6A NH Fuse, NH000, 440 - 500V ac/dc
  • RS Stock No. 269-8332
  • Mfr. Part No. 3ND1801
Each (In a Pack of 3)
SGD29.79(exc. GST)
In Stock
Eaton PFGM RCCB, 40A, 4 Pole, 30mA, Type A, 230 V ac, 400 V ac
  • RS Stock No. 227-0724
  • Mfr. Part No. 267457 PFGM-40/4/003-A
Each
SGD189.24(exc. GST)
In Stock
Eaton 32A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8639P
  • Mfr. Part No. 32NHG000B
Each (Supplied in a Box)
SGD7.64(exc. GST)
In Stock
Eaton 40A Slow-Blow Cartridge Fuse, 14 x 51mm
  • RS Stock No. 228-600
  • Mfr. Part No. C14M40 CYLINDRICAL FUSE 14 x 51 40A AM 500V AC
1 Pack of 10
SGD33.44(exc. GST)
1
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