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

297 of 999+
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 16A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-755
  • Mfr. Part No. IL0163P36
Each
$1,250.32(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Acti9 Reflex MCB, 3P, 10A Curve D, 230V AC, 48V DC, 30 kA Breaking Capacity
  • RS Stock No. 341-546
  • Mfr. Part No. A9C66310
Each
$2,799.21(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELH11 2 Pole Panel Mount, 40A Current Rating
  • RS Stock No. 275-0233
  • Mfr. Part No. IELH11-1-62-40.0-AC-01-V
Each
$333.14(exc. GST)
In Stock
Mersen 32A Bolted Tag Fuse, A3, 460 V dc, 690V ac, 73mm
  • RS Stock No. 178-1114
  • Mfr. Part No. D1006598 / BTIS69V32M40
Each (In a Pack of 10)
$43.65(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 1P 25A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 345-307
  • Mfr. Part No. C10F1TM025
Each
$1,011.45(exc. GST)
In Stock
Siemens 315A Slotted Tag Fuse, NH000, 690V
  • RS Stock No. 230-3023
  • Mfr. Part No. 3NE8731-1
Each (In a Pack of 10)
$142.023(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7625
  • Mfr. Part No. C11H3TM100L
Each
$1,881.00(exc. GST)
In Stock
Schneider Electric Acti 9 Cover for use with ARA, IC60, iDPN Vigi, iLD, iSW, ISW-NA, RCA, Reflex iC60
  • RS Stock No. 791-2773
  • Mfr. Part No. A9A26981
Each (In a Pack of 20)
$4.205(exc. GST)
In Stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 100A, Breaking Capacity 25 kA, Busbar System
  • RS Stock No. 654-212
  • Mfr. Part No. IL1001P252
Each
$442.90(exc. GST)
In Stock
RS PRO 7.5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 563-576
Each (In a Pack of 10)
$2.039(exc. GST)
Currently unavailable
FUSE 250V IEC TL LBC TR5 SL 3.15A
  • RS Stock No. 565-396
  • Mfr. Part No. 37213150431
Each
$334.10(exc. GST)
Currently unavailable
RND 8A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 697-231
  • Mfr. Part No. RND 170-00059
1 Pack of 25
$3.89(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 500mA, 600V
  • RS Stock No. 738-2970P
  • Mfr. Part No. 0461.500ER
Each (Supplied on a Reel)
$3.031(exc. GST)
Temporarily out of stock
Hinode Electric Co Ltd 250A Bolted Tag Fuse, 82mm
  • RS Stock No. 103-4254
  • Mfr. Part No. 660GH-250
Each
$104.63(exc. GST)
In Stock
Schurter 2A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 173-7963
  • Mfr. Part No. 0090.0002
Each (In a Box of 10)
$39.258(exc. GST)
Temporarily out of stock
Siemens 8WH9130 Terminal for use with Mounting Plates
  • RS Stock No. 230-2198
  • Mfr. Part No. 8WH9130-0AA00
Each (In a Pack of 10)
$15.272(exc. GST)
Temporarily out of stock
Eaton 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 2P, 600V ac
  • RS Stock No. 182-1519
  • Mfr. Part No. CHCC2DIU
Each (In a Box of 6)
$239.012(exc. GST)
Temporarily out of stock
Eaton Eaton xEffect SASY 60i Busbar
  • RS Stock No. 248-030
  • Mfr. Part No. 107201 BBT-CU20-30X5/10-95
Each (In a Pack of 3)
$53.493(exc. GST)
In Stock
Mersen 350A NH Fuse, NH1, 690V ac
  • RS Stock No. 448-3522
  • Mfr. Part No. P320380
Each
$437.28(exc. GST)
In Stock
Eaton 10A F Melamine Cartridge Fuse, 14 x 38mm
  • RS Stock No. 848-4083
  • Mfr. Part No. JJS-10
Each
$113.67(exc. GST)
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