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

34912 Products showing for Fuses & Circuit Breakers

67 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 35A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-592
  • Mfr. Part No. 3VA5135-5ED41-0AA0
Each
$1,530.42(exc. GST)
Temporarily out of stock
Schneider Electric Canalis Busbar, 230-400V
  • RS Stock No. 211-947
  • Mfr. Part No. KBB40EDA20W
1 Pack of 6
$1,660.42(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 90A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 269-607
  • Mfr. Part No. 3VA5290-5ED31-2AA0
Each
$2,110.15(exc. GST)
In Stock
Schurter TA11 Thermal Circuit Breaker - T11-211 Single Pole 240V ac Voltage Rating Universal Mount, 6A Current Rating
  • RS Stock No. 269-3820
  • Mfr. Part No. 4400.0050
Each
$19.83(exc. GST)
Temporarily out of stock
Eaton 32A Tag Fuse, 22 x 86mm, 0.46/0.69kV, 73mm
  • RS Stock No. 261-417
  • Mfr. Part No. TIA32
1 Pack of 20
$475.59(exc. GST)
In Stock
RS PRO 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 563-744
Each (In a Pack of 10)
$1.874(exc. GST)
In Stock
RS PRO 2A FF Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 420-094
Each (In a Pack of 10)
$3.754(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 6A Current Rating, Type C, A9A Range
  • RS Stock No. 335-055
  • Mfr. Part No. A9A19802
Each
$101.20(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 250 Circuit Breakers
  • RS Stock No. 212-033
  • Mfr. Part No. C2544A250
Each
$5,741.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-709
  • Mfr. Part No. 3VA5250-6ED31-0AA0
Each
$1,901.60(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1.25kA, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 654-620
  • Mfr. Part No. C125N420FM
Each
$13,212.73(exc. GST)
In Stock
RS PRO Single Phase Industrial Surge Protector, 10kA, 1.3kV, DIN Rail Mount
  • RS Stock No. 101-750
Each
$90.08(exc. GST)
Temporarily out of stock
Eaton 1.5A T Nickel Plated Spring Brass (Terminal) Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 228-688
  • Mfr. Part No. FNQ-1-1/2
1 Pack of 10
$1,083.76(exc. GST)
In Stock
Littelfuse 2A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4628
  • Mfr. Part No. 0216002.MXP
Each (In a Pack of 10)
$2.187(exc. GST)
Temporarily out of stock
Siemens SENTRON 1 Phase Busbar, 1.5mm Pitch
  • RS Stock No. 328-437
  • Mfr. Part No. 5ST3701-2HG
Each
$101.43(exc. GST)
Temporarily out of stock
Eaton 50A Cartridge Fuse, 1.5 x 0.5in
  • RS Stock No. 263-415
  • Mfr. Part No. TPA-50
1 Pack of 10
$689.99(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-146
  • Mfr. Part No. KV 9236 M
Each
$435.88(exc. GST)
In Stock
Sato Parts 10A Panel Mount Fuse Holder for 6.4 x 30mm Fuse, 250V ac
  • RS Stock No. 627-2093
  • Mfr. Part No. F-4000-A
Each (In a Pack of 5)
$8.426(exc. GST)
Temporarily out of stock
Schneider Electric Surge Arrester, 20kA, 350V ac, Clip-On Mount
  • RS Stock No. 346-789
  • Mfr. Part No. A9L20300
Each
$1,384.81(exc. GST)
Temporarily out of stock
Schneider Electric Horizontal Distribution Length, 2m, 40A, Canalis Series
  • RS Stock No. 207-225
  • Mfr. Part No. KBA40ED2203TW
Each
$425.29(exc. GST)
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