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

34963 Products showing for Fuses & Circuit Breakers

106 of 999+
In Stock
Eaton 32A Bolted Tag Fuse, 500 V dc, 690V ac, 63.5mm
  • RS Stock No. 182-1786
  • Mfr. Part No. 32ET
Each
$45.30(exc. GST)
Temporarily out of stock
Eaton 20A Cartridge Fuse, 23 x 57mm
  • RS Stock No. 228-988
  • Mfr. Part No. 20KR85
1 Pack of 20
$448.05(exc. GST)
Temporarily out of stock
ABB MCCB 3P 250A, Breaking Capacity 65 kA
  • RS Stock No. 192-0834
  • Mfr. Part No. 1SDA068126R1
Each
$3,512.09(exc. GST)
Temporarily out of stock
Hager RCBO, 16A Current Rating, 3P+N Poles, 300mA Trip Sensitivity, Type AC
  • RS Stock No. 602-213
  • Mfr. Part No. AFC416F
Each
$835.42(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 A9P54 MCB, 1+N, 10kA, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 207-170
  • Mfr. Part No. A9P54640
Each
$159.13(exc. GST)
Temporarily out of stock
Schneider Electric 4 Phase Surge Arrester, 75kA, 2500V (Volts), Clip-On Mount
  • RS Stock No. 438-847
  • Mfr. Part No. M9L47600
Each (In a Pack of 36)
$3,016.489(exc. GST)
Temporarily out of stock
Eaton Cartridge Fuse, 8 x 3in
  • RS Stock No. 261-464
  • Mfr. Part No. FP-3
Each
$176.62(exc. GST)
Temporarily out of stock
Siemens 3A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 627-167
  • Mfr. Part No. 3NW2030-0HG
1 Pack of 10
$352.68(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 200mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-103
  • Mfr. Part No. 3RV2411-0BA10
Each
$437.65(exc. GST)
Temporarily out of stock
Eaton 14A Cartridge Fuse, 1.44 x 0.39in
  • RS Stock No. 229-211
  • Mfr. Part No. FNQ-14
1 Pack of 10
$1,384.44(exc. GST)
In Stock
RS PRO 100mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9579
Each (In a Pack of 10)
$1.514(exc. GST)
In Stock
Eaton 180A Bolted Tag Fuse, 18 x 56mm, 240 V ac, 150V dc, 41.8mm
  • RS Stock No. 182-1575
  • Mfr. Part No. 180LET
Each
$43.31(exc. GST)
In Stock
Better World
Schneider Electric Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P
  • RS Stock No. 188-4687
  • Mfr. Part No. DF101
Each
$30.73(exc. GST)
Limited stock
Phoenix Contact Thermal Circuit Breaker - TCP 1A Single Pole 250V ac Voltage Rating On Base Element, 1A Current Rating
  • RS Stock No. 801-6892
  • Mfr. Part No. 0712194
Each
$40.37(exc. GST)
Temporarily out of stock
Eaton 350A Centred Tag Fuse, NH1, 690V ac
  • RS Stock No. 182-1384
  • Mfr. Part No. 170M3818D
Each (In a Box of 6)
$662.248(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 3 channels
  • RS Stock No. 155-890
  • Mfr. Part No. 3VA2440-6JQ32-0AA0
Each
$8,982.39(exc. GST)
Temporarily out of stock
Schneider Electric Cross Elbow Busbar Trunking, 800mm, 630A, Canalis Series
  • RS Stock No. 340-965
  • Mfr. Part No. KSA630DZE43A
Each
$5,440.73(exc. GST)
Temporarily out of stock
Eaton 2.25A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-919
  • Mfr. Part No. LP-CC-2-1/4
1 Pack of 10
$1,138.17(exc. GST)
Temporarily out of stock
Siemens 32A Cartridge Fuse, 10 X 38mm
  • RS Stock No. 665-116
  • Mfr. Part No. 3NW8012-1
1 Pack of 20
$197.36(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1410-G1 Single Pole 250V Voltage Rating Panel Mount, 4.5A Current Rating
  • RS Stock No. 729-2710
  • Mfr. Part No. 1410-G111-P2F1-S01-4.5A
Each
$43.26(exc. GST)
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