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

274 of 999+
In Stock
Bourns Surface Mount Fuse 6A, 48V dc
  • RS Stock No. 245-9229P
  • Mfr. Part No. SF-1206F600M-2
Each (Supplied on a Reel)
$1.026(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-499
  • Mfr. Part No. 3VA6580-7JP32-2AA0
Each
$15,585.01(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1P, 10A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1252
  • Mfr. Part No. 5SY4110-8
Each
$138.08(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar, 690V
  • RS Stock No. 221-0905
  • Mfr. Part No. GV3G264
Each
$109.16(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-585
  • Mfr. Part No. 3VA6225-5KM31-2AA0
Each
$9,056.67(exc. GST)
Temporarily out of stock
ABB PBFC 3, 3+N Phase Busbar
  • RS Stock No. 200-510
  • Mfr. Part No. 1STQ007407A0000
Each
$1,569.16(exc. GST)
In Stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 288-7177
  • Mfr. Part No. C106TM040
Each
$626.58(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 654-127
  • Mfr. Part No. C11F44V100L
Each
$3,714.42(exc. GST)
In Stock
Bourns 1.1A Resettable Fuse, 16V
  • RS Stock No. 647-8207
  • Mfr. Part No. MF-MSMF110/16-2
Each (In a Pack of 10)
$0.743(exc. GST)
In Stock
Lovato Shunt Trip Shunt trip for use with P2MB Series
  • RS Stock No. 825-6194
  • Mfr. Part No. P2X16230
Each
$255.09(exc. GST)
In Stock
Bourns 200A Tag Fuse, 66mm, 500/600V ac, 24.1mm
  • RS Stock No. 254-4157
  • Mfr. Part No. PF-FB2-50
Each
$143.65(exc. GST)
Temporarily out of stock
Siemens SENTRON Cover for use with 3VA1 400/630 and 3VA2 400/630
  • RS Stock No. 210-9386
  • Mfr. Part No. 3VA9401-0WG40
Each
$446.67(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 A9F MCB Mini Circuit Breaker, 3P, 63A Curve B, 415V AC, 375V DC, 15 kA Breaking Capacity
  • RS Stock No. 653-900
  • Mfr. Part No. A9N18423
Each
$858.98(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 300A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 256-511
  • Mfr. Part No. 3VA5330-6EC31-0AA0
Each
$8,043.42(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-3593
  • Mfr. Part No. 1SDA071570R1
Each
$25,386.99(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 1P, 13A Curve D, 400V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-473
  • Mfr. Part No. 5SY8113-8
Each
$116.28(exc. GST)
Temporarily out of stock
Eaton 6A Tag Fuse, 14 x 68mm, 550V
  • RS Stock No. 228-684
  • Mfr. Part No. ESD6
1 Pack of 20
$640.15(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 336-635
  • Mfr. Part No. SEA9BPN16
Each
$1,878.00(exc. GST)
Currently unavailable
RS PRO 25A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-4670
Each
$34.27(exc. GST)
In Stock
Rittal 25A Base Mount Fuse Holder, 3P, 500V
  • RS Stock No. 263-3756
  • Mfr. Part No. 3427010
Each (In a Pack of 10)
$34.846(exc. GST)
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