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

162 of 999+
Temporarily out of stock
SENTRON Cover Frame for use with 3VA61/62 Series
  • RS Stock No. 263-965
  • Mfr. Part No. 3VA9143-0SB20
Each
$321.70(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-775
  • Mfr. Part No. A9D73610
Each
$662.19(exc. GST)
In Stock
SIBA 100A Centred Tag Fuse, NH1, 500V ac
  • RS Stock No. 421-750
  • Mfr. Part No. 20-003-13/100A
Each
$28.08(exc. GST)
In Stock
Wickmann 0.5A Resettable Fuse, 60V dc
  • RS Stock No. 174-0809
  • Mfr. Part No. 60R050XU
Each (In a Pack of 50)
$0.686(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1616 Single Pole 32V Voltage Rating, 10A Current Rating
  • RS Stock No. 729-2739
  • Mfr. Part No. 1616-21-10A
Each
$73.47(exc. GST)
In Stock
Murrelektronik Limited Mico Pro Circuit Breaker
  • RS Stock No. 285-5884
  • Mfr. Part No. 9000-41014-0400001
Each
$317.08(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 1P, 3A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9262
  • Mfr. Part No. A9F94103
Each
$256.76(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 2210 Single Pole 277, 480V Voltage Rating DIN Rail Mount, 1.5A Current Rating
  • RS Stock No. 282-8759
  • Mfr. Part No. 2210-T210-K0M1-H121-1.5A
Each
$93.18(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 7A, 125V ac/dc
  • RS Stock No. 541-3451
  • Mfr. Part No. 0451007.MRL
Each (In a Pack of 10)
$2.556(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 3A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7643
  • Mfr. Part No. 2CDS251001R0034 S201-C3
Each
$48.60(exc. GST)
In Stock
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 173-9660
  • Mfr. Part No. 0031.3901
Each (In a Box of 100)
$7.012(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-4634
  • Mfr. Part No. 1SDA072907R1
Each
$22,116.04(exc. GST)
In Stock
Siemens 40A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 396-253
  • Mfr. Part No. 3NC1440
Each (In a Pack of 10)
$50.633(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON Circuit breaker 2P 160A, DIN Rail Mount
  • RS Stock No. 224-7815
  • Mfr. Part No. 3VA1116-5ED22-0AA0
Each
$1,603.15(exc. GST)
Temporarily out of stock
Lovato Cover for use with P1X9033 Bus Bar
  • RS Stock No. 825-6138
  • Mfr. Part No. P1X9131
Each
$2.27(exc. GST)
Temporarily out of stock
Eaton 32A Cartridge Fuses, 22.2 x 58mm
  • RS Stock No. 260-731
  • Mfr. Part No. C22G32S
1 Pack of 10
$224.37(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Clip for use with PKZM0
  • RS Stock No. 272-1428
  • Mfr. Part No. 206740 C-PKZ0-K
Each
$17.72(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 3 channels
  • RS Stock No. 160-029
  • Mfr. Part No. 3VA2463-5HM32-0AA0
Each
$7,086.20(exc. GST)
In Stock
Schurter Thermal Circuit Breaker - T12 Single Pole 240V ac Voltage Rating, 4A Current Rating
  • RS Stock No. 284-6088
  • Mfr. Part No. 4410.0076
Each
$54.87(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 4 channels
  • RS Stock No. 259-3783
  • Mfr. Part No. 1SDA071789R1
Each
$45,830.33(exc. GST)
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