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

1754 of 999+
In Stock
Littelfuse SMD Non Resettable Fuse 1.25A, 125V
  • RS Stock No. 738-2914P
  • Mfr. Part No. 04511.25MRL
Each (Supplied on a Reel)
$1.872(exc. GST)
In Stock
Schneider Electric Resi9 R9F2 MCB, 1P, 13A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-139
  • Mfr. Part No. R9F23113
Each
$31.89(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact B Circuit breaker 4P 25A, Breaking Capacity 14 KA, Clip-On
  • RS Stock No. 119-194
  • Mfr. Part No. BDL46025LU
Each
$2,341.68(exc. GST)
In Stock
Circuit-breaker/thermal 1 A
  • RS Stock No. 577-454
  • Mfr. Part No. 106-P10-1A
Each
$23.16(exc. GST)
Temporarily out of stock
Schneider Electric Multi9 M9F1 MCB, 2P, 16A Curve D, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-129
  • Mfr. Part No. M9F12216
Each
$267.26(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)2(-4), N(S)3(-4), NZM2(-4), NZM3(-4)
  • RS Stock No. 255-713
  • Mfr. Part No. 259495 NZM2/3-XU60AC
Each
$373.78(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3258
  • Mfr. Part No. 1SDA071157R1
Each
$37,021.13(exc. GST)
In Stock
Schneider Electric RCBO, 25A Current Rating, 4P Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-869
  • Mfr. Part No. A9D55425
Each
$2,211.54(exc. GST)
In Stock
Schneider Electric RCBO, 20A Current Rating, 4P Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-733
  • Mfr. Part No. A9D55420
Each
$2,106.13(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 500mA, 63V
  • RS Stock No. 738-3289P
  • Mfr. Part No. 0468.500NR
Each (Supplied on a Reel)
$1.435(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 100A, Fixed
  • RS Stock No. 122-409
  • Mfr. Part No. LV510667
Each
$611.17(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-271
  • Mfr. Part No. 3VA6460-5KM31-0AA0
Each
$10,068.61(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-554
  • Mfr. Part No. 3VA6210-5KL31-0AA0
Each
$7,420.71(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 629-381
  • Mfr. Part No. 8GK1383-1KK44
Each
$2,148.04(exc. GST)
Temporarily out of stock
Schneider Electric Panelset Busbar
  • RS Stock No. 444-137
  • Mfr. Part No. NSYTBCN385
Each
$3,482.96(exc. GST)
In Stock
Appliance Safety Switch/Thermal
  • RS Stock No. 577-472
  • Mfr. Part No. 2-5700-IG1-P10-12A
Each
$31.89(exc. GST)
Temporarily out of stock
Eaton IZMX16H3-V12F-1 Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 127-707
  • Mfr. Part No. 183339 IZMX16H3-V12F-1
Each
$14,374.87(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 250A Ekip Dip LSI, 3 channels
  • RS Stock No. 259-9862
  • Mfr. Part No. 1SDA070692R1
Each
$11,058.00(exc. GST)
Temporarily out of stock
Lovato 32A Rail Mount Fuse Holder, 2P, 1kV
  • RS Stock No. 216-8278
  • Mfr. Part No. FB01D2P
Each
$41.24(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Terminal Kit for use with INX40…4…20W, INX40…4…25W, IZMX40…4…20W, IZMX40…4…25W
  • RS Stock No. 132-381
  • Mfr. Part No. 184184 IZMX-TF404-2500W-1
Each
$2,587.68(exc. GST)
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