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

1719 of 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-4595
  • Mfr. Part No. 1SDA072854R1
Each
$11,938.09(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type AC, Acti9 Range
  • RS Stock No. 276-9124
  • Mfr. Part No. A9D07210
Each
$1,208.10(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 630mA, 32 V ac, 63V dc
  • RS Stock No. 665-7374P
  • Mfr. Part No. 3413.0214.22
Each (Supplied on a Reel)
$1.14(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 1A Curve K, 440V AC, 20 kA Breaking Capacity
  • RS Stock No. 514-0175
  • Mfr. Part No. 2CDS253001R0217 S203-K1
Each
$294.16(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 40A, Fixed
  • RS Stock No. 122-514
  • Mfr. Part No. LV510573
Each
$833.31(exc. GST)
In Stock
Socomec 400 Centred Tag Fuse, S2
  • RS Stock No. 223-2864
  • Mfr. Part No. 68720400
Each (In a Pack of 3)
$67.58(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 1A, 125V ac/dc
  • RS Stock No. 600-7344
  • Mfr. Part No. 3410.0031.01
Each (In a Pack of 20)
$6.364(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 4 channels
  • RS Stock No. 155-801
  • Mfr. Part No. 3VA2325-8HK42-0AA0
Each
$7,969.35(exc. GST)
Limited stock
Schurter SMD Non Resettable Fuse 12A, 32 V ac, 63V dc
  • RS Stock No. 703-2789P
  • Mfr. Part No. 3413.0329.22
Each (Supplied on a Reel)
$0.766(exc. GST)
Temporarily out of stock
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 259-156
  • Mfr. Part No. 283872 XBSP
Each
$21.90(exc. GST)
Temporarily out of stock
Lovato 1 Phase Surge Protector, 50kA
  • RS Stock No. 216-8296
  • Mfr. Part No. SG21NA300
Each
$392.54(exc. GST)
Temporarily out of stock
Schneider Electric M9R RCCB, 25A, 2 Pole, 86mA, Type A-SI, 240V ac
  • RS Stock No. 212-015
  • Mfr. Part No. M9R12225
Each
$526.92(exc. GST)
Temporarily out of stock
Eaton xComfort KLV Installaton Accessory for use with Basic Device, Installation Distribution Boards, KLV for Projects
  • RS Stock No. 125-019
  • Mfr. Part No. 178880 KLV-SF3-4PR
Each
$123.78(exc. GST)
In Stock
Bourns Surface Mount Fuse 1.5A, 65V dc
  • RS Stock No. 245-9249P
  • Mfr. Part No. SF-1206SA150M-2
Each (Supplied on a Reel)
$1.406(exc. GST)
In Stock
Schneider Electric, ComPacT new generation Circuit breaker 1P 63A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 110-319
  • Mfr. Part No. C10N1TM063
Each
$1,154.95(exc. GST)
Temporarily out of stock
Socomec 12A F Cartridge Fuse, 14 x 51mm
  • RS Stock No. 223-2829
  • Mfr. Part No. 60530012
Each (In a Pack of 10)
$11.99(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-481
  • Mfr. Part No. 3VA6210-5KL31-2AA0
Each
$8,102.57(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 4 channels
  • RS Stock No. 259-3864
  • Mfr. Part No. 1SDA071874R1
Each
$69,130.57(exc. GST)
In Stock
Socomec 50A F Cartridge Fuse, 14 x 51mm
  • RS Stock No. 223-2803
  • Mfr. Part No. 60230050
Each (In a Pack of 10)
$4.187(exc. GST)
Temporarily out of stock
ABB SMISSLINE Busbar for Smissline TP
  • RS Stock No. 246-2353
  • Mfr. Part No. 2CCF800264R0001
Each
$52.59(exc. GST)
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