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

275 of 999+
In Stock
Schurter 16A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 2P, 600V ac
  • RS Stock No. 144-1834
  • Mfr. Part No. 0031.9161
Each
$39.97(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 3.2kA , 4 channels , Fixed
  • RS Stock No. 132-720
  • Mfr. Part No. 183777 IZMX40H4-P32F-1
Each
$70,055.80(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 iC40N MCB, 1P + N, 20A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-726
  • Mfr. Part No. A9P54620
Each
$135.13(exc. GST)
In Stock
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-812
  • Mfr. Part No. 568719
Each
$16.47(exc. GST)
In Stock
Eaton 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1177
  • Mfr. Part No. S500-2-R
Each (In a Pack of 10)
$0.747(exc. GST)
Temporarily out of stock
Fluke 15A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 729-6740
  • Mfr. Part No. 892583
Each
$34.73(exc. GST)
In Stock
Siemens 1A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 226-2959
  • Mfr. Part No. 8WA1822-7EF76
Each (In a Pack of 10)
$4.662(exc. GST)
Temporarily out of stock
Hager NQN MCB, 4P, 50A Curve B, 415V AC, 15 kA Breaking Capacity
  • RS Stock No. 597-940
  • Mfr. Part No. NQN450
Each
$1,056.80(exc. GST)
Temporarily out of stock
Eaton xEnergy Basic Distribution Board Enclosure
  • RS Stock No. 251-424
  • Mfr. Part No. 193180 BP-O-1100/11-EP-W
Each
$1,940.16(exc. GST)
Temporarily out of stock
Wickmann 35A Green Blade Car Fuse, 32V dc
  • RS Stock No. 174-0226
  • Mfr. Part No. 0287035.PXCN
1 Box of 2000
$710.77(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 3 channels
  • RS Stock No. 156-791
  • Mfr. Part No. 3VA2463-8HN32-0AA0
Each
$9,004.90(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 256-501
  • Mfr. Part No. 3VA5325-6GC41-2AA0
Each
$9,279.03(exc. GST)
Last RS stock
Littelfuse 0.4A Resettable Fuse, 240V ac
  • RS Stock No. 869-7374
  • Mfr. Part No. LVR040K-2
Each (In a Bag of 10)
$1.502(exc. GST)
Temporarily out of stock
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 4 channels
  • RS Stock No. 160-033
  • Mfr. Part No. 3VA2463-5HN42-0BH0
Each
$10,176.31(exc. GST)
In Stock
Phoenix Contact Thermal Circuit Breaker - CB TM2 2 Pole 80V dc Voltage Rating, 2A Current Rating
  • RS Stock No. 217-6368
  • Mfr. Part No. 2800870
Each
$184.73(exc. GST)
In Stock
Hager 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 250-8603
  • Mfr. Part No. LF310PV
Each (In a Pack of 10)
$38.37(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 50A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-757
  • Mfr. Part No. IL0503P36
Each
$1,250.32(exc. GST)
In Stock
Phoenix Contact CLIPLINE Thermal Circuit Breaker - UT 6-TMC Single Pole 250V Voltage Rating DIN Rail Mount, 15A
  • RS Stock No. 684-3610
  • Mfr. Part No. 0916612
Each
$36.51(exc. GST)
In Stock
Bourns 40A Tag Fuse, 38mm, 170V dc, 24.1mm
  • RS Stock No. 254-4229
  • Mfr. Part No. PF-NT5-40
Each
$55.23(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, 32A, 1000V dc
  • RS Stock No. 518-127
  • Mfr. Part No. 1283679
Each
$590.49(exc. GST)
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