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

98 of 999+
In Stock
TE Connectivity Thermal Circuit Breaker - W31 Single Pole 50 V dc, 240V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 782-0930
  • Mfr. Part No. W31-X2M1G-10
Each
$114.80(exc. GST)
In Stock
Littelfuse 30A Inline Fuse Holder for ATO Fuse, 32V dc
  • RS Stock No. 337-5234
  • Mfr. Part No. FHAC0002LXN
Each (In a Pack of 5)
$10.628(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 25A Current Rating
  • RS Stock No. 175-1542
  • Mfr. Part No. GV4PE25S
Each
$1,345.23(exc. GST)
Temporarily out of stock
Eaton 125A NH Fuse, 58 x 30 x 79mm, 690V ac
  • RS Stock No. 246-289
  • Mfr. Part No. 125NHG00B-690
1 Pack of 3
$41.90(exc. GST)
Temporarily out of stock
Clipsal Electrical MAX9 Busbar, 400V ac, 18mm Pitch
  • RS Stock No. 282-3914
  • Mfr. Part No. MX9B357P
Each
$411.48(exc. GST)
In Stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7931
  • Mfr. Part No. C25N3
Each
$2,531.93(exc. GST)
In Stock
RS PRO 20A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8124
Each (In a Pack of 50)
$1.40(exc. GST)
In Stock
Littelfuse 500mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4347
  • Mfr. Part No. 0217.500MXP
Each (In a Pack of 10)
$0.638(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-487
  • Mfr. Part No. 3VA5580-5EC32-0AA0
Each
$8,812.82(exc. GST)
In Stock
Eaton 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1408
Each (In a Pack of 10)
$0.842(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 iC60N MCB, 3P, 63A Curve C
  • RS Stock No. 230-6672
  • Mfr. Part No. A9F44363
Each
$129.16(exc. GST)
Currently unavailable
FUSE 250V IEC TL LBC TR5 SL 1.25A
  • RS Stock No. 552-456
  • Mfr. Part No. 37211250411
1 Bag of 100
$232.01(exc. GST)
In Stock
Eaton 30A Panel Mount Fuse Holder for 10 x 38mm Fuse, 600V ac
  • RS Stock No. 233-0573
  • Mfr. Part No. BK1-HPG-615E
1 Box of 1000
$5,517.60(exc. GST)
Temporarily out of stock
Siemens SENTRON Withdrawable Unit for use with Circuit Breaker
  • RS Stock No. 157-798
  • Mfr. Part No. 3VA9214-0KD00
Each
$1,885.52(exc. GST)
Temporarily out of stock
Schneider Electric 10A Cartridge Fuses, 22.2 x 58mm
  • RS Stock No. 438-992
  • Mfr. Part No. DF2FN10
1 Pack of 10
$270.56(exc. GST)
Temporarily out of stock
Eaton 10A gG/gL Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 228-840
  • Mfr. Part No. C22G10
1 Pack of 10
$71.37(exc. GST)
Temporarily out of stock
RS PRO 15A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8053
Each (In a Box of 500)
$1.996(exc. GST)
In Stock
Eaton 63A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 181-8779
  • Mfr. Part No. C22M63
Each
$16.31(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6284
  • Mfr. Part No. C10F32D100
Each
$1,845.66(exc. GST)
In Stock
Eaton 250A Tag Fuse, 40mm, 1kV
  • RS Stock No. 282-6198
  • Mfr. Part No. FWE-250A
Each
$654.81(exc. GST)
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