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

47305 Products showing for Fuses & Circuit Breakers

3 of 999+
In Stock
Eaton 6A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 413-282
  • Mfr. Part No. NITD6
Each (In a Pack of 5)
TWD219.20(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 2A Curve B, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2327
  • Mfr. Part No. M9F21102
Each
TWD1,516.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 3P, 4A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 622-0109
  • Mfr. Part No. 5SY4304-7
Each
TWD3,249.00(exc. GST)
In Stock
Contactum 2 Way Steel Consumer Unit, 63A Defender
  • RS Stock No. 184-9102
  • Mfr. Part No. DD026MS
Each
TWD2,211.00(exc. GST)
In Stock
Littelfuse 20A Inline Fuse Holder for 6.3 x 32mm Fuse, 32V dc
  • RS Stock No. 360-7294
  • Mfr. Part No. 01550100Z
Each (In a Pack of 5)
TWD82.60(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 2P, 16A Curve D, 440V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2396
  • Mfr. Part No. M9F23216
Each
TWD3,264.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1+N, 16A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1436
  • Mfr. Part No. 5SY4516-7
Each
TWD3,051.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 3P, 63A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3182
  • Mfr. Part No. 5SY4363-7
Each
TWD3,102.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 25A Curve B, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3177
  • Mfr. Part No. A9F53125
Each
TWD1,255.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 2A Curve D, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3455
  • Mfr. Part No. A9F55102
Each
TWD1,427.00(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 2P, 6A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2064
  • Mfr. Part No. M9F11206
Each
TWD4,055.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 4P, 2A Curve C, 277V AC
  • RS Stock No. 256-6765
  • Mfr. Part No. M9F22402
Each
TWD13,575.00(exc. GST)
In Stock
RS PRO 10A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6091
Each (In a Pack of 10)
TWD19.50(exc. GST)
In Stock
Bulgin 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 376-6589
  • Mfr. Part No. FX0367/2
Each (In a Pack of 5)
TWD140.80(exc. GST)
Temporarily out of stock
Eaton 10A Bolted Tag Fuse, 240 V ac, 150V dc, 41.8mm
  • RS Stock No. 181-8670
  • Mfr. Part No. 10LET
Each
TWD2,345.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 IC60L MCB, 2P, 3A, Type Z, 400V AC, 125V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 212-0120
  • Mfr. Part No. A9F92203
Each
TWD4,287.00(exc. GST)
In Stock
Schneider Electric Thermal Circuit Breaker - GB2 1P + N Pole 250V ac Voltage Rating DIN Rail Mount, 8A Current Rating
  • RS Stock No. 610-0904
  • Mfr. Part No. GB2CD14
Each
TWD2,156.00(exc. GST)
In Stock
Eaton 80A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 182-1835
  • Mfr. Part No. 170M1566D
Each
TWD6,255.00(exc. GST)
In Stock
Siemens 1A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 225-5415
  • Mfr. Part No. 3NW1010-0HG
Each (In a Pack of 10)
TWD832.30(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 10A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3388
  • Mfr. Part No. A9F54310
Each
TWD3,576.00(exc. GST)
Results per page
1
2
3
2366