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

47304 Products showing for Fuses & Circuit Breakers

2 of 999+
Eaton 80A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 181-8873
  • Mfr. Part No. C22M80
Each
TWD147.00(exc. GST)
SIBA 50A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 768-6096
  • Mfr. Part No. 5012406.5
Each
TWD526.00(exc. GST)
ETA Thermal Circuit Breaker - 2 5700 Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 729-2760
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-15A
Each
TWD1,047.00(exc. GST)
ABB F200 RCCB, 100A, 4 Pole, 100mA, Type AC, 400V ac
  • RS Stock No. 231-9900
  • Mfr. Part No. 2CSF204001R2900 F204 AC-100/0,1
Each
TWD13,138.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 63A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3310
  • Mfr. Part No. A9F54163
Each
TWD1,133.00(exc. GST)
RS PRO Earthing Strap Copper 457 x 13mm Diameter
  • RS Stock No. 264-9253
Each (In a Pack of 5)
TWD316.60(exc. GST)
Better World
Schneider Electric Multi 9 MCB, 2P, 6A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 219-9123
  • Mfr. Part No. M9F22206
Each
TWD6,179.00(exc. GST)
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2906
  • Mfr. Part No. T218195
1 Box of 10
TWD1,174.00(exc. GST)
SIBA 3.15A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 418-9551
  • Mfr. Part No. 70-059-61/3.15A
Each (In a Pack of 10)
TWD17.90(exc. GST)
RS PRO 40A British Standard Fuse, A3, 550V ac, 73.5mm
  • RS Stock No. 521-2630
Each (In a Pack of 5)
TWD333.40(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 10A, 125V ac/dc
  • RS Stock No. 541-3322P
  • Mfr. Part No. 0251010.HAT1L
Each (Supplied in a Bag)
TWD21.90(exc. GST)
RS PRO 600mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-661
Each (In a Pack of 10)
TWD10.00(exc. GST)
Better World
Schneider Electric 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 181-2611
  • Mfr. Part No. DF2CA10
Each (In a Box of 10)
TWD193.60(exc. GST)
Eaton 32A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8406
  • Mfr. Part No. C10G32
Each (In a Pack of 10)
TWD40.10(exc. GST)
Mersen 1A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2882
  • Mfr. Part No. R302787
1 Box of 10
TWD3,150.00(exc. GST)
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 8.5 x 31.5mm
  • RS Stock No. 247-2714
  • Mfr. Part No. C222205
1 Box of 10
TWD419.00(exc. GST)
Phoenix Contact Thermal Circuit Breaker - CB TM1 Single Pole 50V dc Voltage Rating, 2A Current Rating
  • RS Stock No. 217-6359
  • Mfr. Part No. 2800837
Each
TWD1,392.00(exc. GST)
Littelfuse 6.3A Base Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 787-4243
  • Mfr. Part No. 64700001003
Each (In a Pack of 5)
TWD21.40(exc. GST)
Wickmann 6.3A PCB Mount Fuse Holder, 250V ac
  • RS Stock No. 110-7900
  • Mfr. Part No. 56000001009
Each (In a Pack of 10)
TWD19.80(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS Stock No. 541-3259
  • Mfr. Part No. 0251.500NRT1L
Each (In a Pack of 10)
TWD23.60(exc. GST)
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