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

9 of 999+
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 MCB, 1P, 4A Curve B, 10 kA Breaking Capacity
  • RS Stock No. 219-9106
  • Mfr. Part No. M9F21104
Each
TWD3,632.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 2A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3284
  • Mfr. Part No. A9F54102
Each
TWD1,110.00(exc. GST)
In Stock
Eaton 200A Base Mount Fuse Holder for 0000, 000 Fuse, 1P, 660V ac
  • RS Stock No. 182-1371
  • Mfr. Part No. 170H1013
Each (In a Box of 3)
TWD3,306.00(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)
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)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 630A, Plug In
  • RS Stock No. 122-331
  • Mfr. Part No. LV563515P
Each
TWD32,669.00(exc. GST)
In Stock
Bulgin PVC Fuse Cover
  • RS Stock No. 408-426
  • Mfr. Part No. 11327
Each (In a Pack of 5)
TWD62.80(exc. GST)
In Stock
Schurter 6.3A Inline Fuse Holder for 5 x 20mm Fuse, 32V dc
  • RS Stock No. 703-2811P
  • Mfr. Part No. 8601.2000
Each (Supplied in a Box)
TWD48.70(exc. GST)
In Stock
Better World
Schneider Electric Surge Suppressor Unit, 127 → 240V ac
  • RS Stock No. 210-9822
  • Mfr. Part No. LA4FRCP
Each
TWD3,308.00(exc. GST)
In Stock
Eaton 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 171-6779
  • Mfr. Part No. S505H-V-3-15-R
Each (In a Pack of 5)
TWD21.80(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 3A Curve B, 277V AC
  • RS Stock No. 256-6752
  • Mfr. Part No. M9F21203
Each
TWD10,905.00(exc. GST)
Temporarily out of stock
Eaton 6A Bolted Tag Fuse, 15 x 49mm, 240V ac, 35mm
  • RS Stock No. 181-8914
  • Mfr. Part No. LST6
Each
TWD269.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 32A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3574
  • Mfr. Part No. A9F55332
Each
TWD4,792.00(exc. GST)
In Stock
Eaton Circuit Breaker - NZM..-ME..NA 3 Pole 690V ac Voltage Rating, 200A Current Rating
  • RS Stock No. 250-9705
  • Mfr. Part No. 118966 NZMN2-ME200-NA
Each
TWD85,378.00(exc. GST)
In Stock
Eaton 125A Tag Fuse, 1XL, 1.5kV, 189mm
  • RS Stock No. 282-6499
  • Mfr. Part No. PV-125A-1XL-15
Each
TWD15,185.00(exc. GST)
In Stock
Eaton 10A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 414-623
  • Mfr. Part No. NIT10
Each (In a Pack of 5)
TWD237.80(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 20A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4222
  • Mfr. Part No. 3VA1120-3ED36-0AA0
Each
TWD13,015.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 90A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-726
  • Mfr. Part No. 3VA5190-5EC41-0AA0
Each
TWD23,651.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3611
  • Mfr. Part No. 3VA2010-8JP32-0AA0
Each
TWD67,663.00(exc. GST)
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