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

35151 Products showing for Fuses & Circuit Breakers

308 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4174
  • Mfr. Part No. 3VA1112-3EE36-0AA0
Each
$1,499.27(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 125A, Fixed Mount
  • RS Stock No. 260-7698
  • Mfr. Part No. C12H4TM125B
Each
$3,091.92(exc. GST)
Temporarily out of stock
Fluke 15A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 729-6740
  • Mfr. Part No. 892583
Each
$34.73(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 220A, Fixed Mount
  • RS Stock No. 260-7913
  • Mfr. Part No. C25H3MA220
Each
$4,565.73(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-142
  • Mfr. Part No. 3VA6610-6KQ46-0AA0
Each
$26,460.90(exc. GST)
In Stock
Bulgin 13A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 250V ac
  • RS Stock No. 408-369
  • Mfr. Part No. FX0415
Each
$27.67(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-501
  • Mfr. Part No. 3VA6140-6JT31-2AA0
Each
$8,790.87(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7890
  • Mfr. Part No. C25F42D160
Each
$4,935.58(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4326
  • Mfr. Part No. 3VA1150-4EF36-0AA0
Each
$951.18(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7472
  • Mfr. Part No. C10V45E040
Each
$7,803.85(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9706
  • Mfr. Part No. 3VA11123GE460AA0
Each
$1,910.38(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9696
  • Mfr. Part No. 3VA11123ED460AA0
Each
$1,867.81(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7574
  • Mfr. Part No. C11E4TM040L
Each
$1,240.82(exc. GST)
Temporarily out of stock
Legrand 25A M Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 266-3125
  • Mfr. Part No. 0 141 25
1 Box of 10
$263.53(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 260-7497
  • Mfr. Part No. C10W3MA025
Each
$3,155.90(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 125A, Fixed Mount
  • RS Stock No. 260-7691
  • Mfr. Part No. C12F4TM125B
Each
$2,246.75(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 4 channels
  • RS Stock No. 155-803
  • Mfr. Part No. 3VA2325-8HL42-0AA0
Each
$8,036.86(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7541
  • Mfr. Part No. C11B4TM040L
Each
$1,516.25(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4534
  • Mfr. Part No. 3VA2125-6JP32-0AA0
Each
$3,216.49(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 25A, Fixed Mount
  • RS Stock No. 260-7570
  • Mfr. Part No. C11E4TM025L
Each
$1,240.82(exc. GST)
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