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

1751 of 999+
In Stock
Schneider Electric Multi9 M9F1 MCB, 1P, 2A Curve B, 415V AC, 72V DC, 3 kA Breaking Capacity
  • RS Stock No. 212-190
  • Mfr. Part No. M9F10102
Each
$61.80(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 1A Curve K, 253V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 514-0080
  • Mfr. Part No. 2CDS251001R0217 S201-K1
Each
$80.12(exc. GST)
Temporarily out of stock
Schneider Electric A9W RCD, 25A, 4 Pole, 30mA, Type A, 400/415V ac
  • RS Stock No. 212-295
  • Mfr. Part No. A9W21425
Each
$455.62(exc. GST)
In Stock
Schneider Electric RCBO, 20A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type AC, Acti9 Range
  • RS Stock No. 276-9126
  • Mfr. Part No. A9D57420
Each
$1,528.69(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 3 channels
  • RS Stock No. 259-4198
  • Mfr. Part No. 1SDA072317R1
Each
$20,703.56(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-776
  • Mfr. Part No. 3VA6440-7KL31-2AA0
Each
$21,656.55(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4766
  • Mfr. Part No. 3VA2163-7MP32-0AA0
Each
$2,598.74(exc. GST)
In Stock
Bourns Surface Mount Fuse 4.5A, 65V dc
  • RS Stock No. 245-9264P
  • Mfr. Part No. SF-1206SA450M-2
Each (Supplied on a Reel)
$1.406(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-153
  • Mfr. Part No. 3VA6610-7KT32-0AA0
Each
$20,966.90(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 428-727
  • Mfr. Part No. C100L35AFM
Each
$34,010.59(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 32A, Fixed
  • RS Stock No. 122-534
  • Mfr. Part No. LV510712
Each
$865.73(exc. GST)
Temporarily out of stock
Eaton Eaton xEnergy Safety for use with SA Boxes SKA
  • RS Stock No. 247-005
  • Mfr. Part No. 002066 SVS250630-5
Each
$272.40(exc. GST)
In Stock
Socomec 32A F Cartridge Fuse, 14 x 51mm
  • RS Stock No. 223-2820
  • Mfr. Part No. 60520032
Each (In a Pack of 10)
$12.434(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-527
  • Mfr. Part No. 3VA6140-8HL41-0AA0
Each
$3,296.38(exc. GST)
In Stock
Schneider Electric A9W RCD, 25A, 2 Pole, 30mA, Type A, 230-240V ac
  • RS Stock No. 212-178
  • Mfr. Part No. A9W21225
Each
$256.76(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-4366
  • Mfr. Part No. 1SDA072544R1
Each
$41,778.84(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA Ekip Touch LI, 4 channels
  • RS Stock No. 259-4754
  • Mfr. Part No. 1SDA073034R1
Each
$25,201.12(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 50A, Breaking Capacity 25 KA
  • RS Stock No. 119-288
  • Mfr. Part No. C10N1TM050
Each
$1,154.98(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. 245-327
  • Mfr. Part No. 3VA6140-7KM31-0AA0
Each
$10,421.83(exc. GST)
Temporarily out of stock
Schneider Electric Multi9 M9F1 MCB, 4P, 32A Curve C, 440V AC, 250V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-009
  • Mfr. Part No. M9F11432
Each
$566.70(exc. GST)
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