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

1721 of 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-4185
  • Mfr. Part No. 1SDA072300R1
Each
$22,896.60(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-124
  • Mfr. Part No. 3VA6610-6JT36-0AA0
Each
$22,177.80(exc. GST)
Temporarily out of stock
MCCB 3P 250A, Breaking Capacity 8 kV
  • RS Stock No. 658-408
  • Mfr. Part No. 1SDA054233R1
Each
$5,847.01(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-354
  • Mfr. Part No. 3VA6440-7KL31-0AA0
Each
$19,932.78(exc. GST)
In Stock
RS PRO 1A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 199-231
1 Pack of 10
$485.12(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 4P 100A, Breaking Capacity 40 KA
  • RS Stock No. 119-651
  • Mfr. Part No. C10B44B100
Each
$7,876.19(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4585
  • Mfr. Part No. 3VA2125-7MP32-0AA0
Each
$2,598.74(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 4P 50A, Breaking Capacity 90 KA, Fixed Mount
  • RS Stock No. 119-598
  • Mfr. Part No. C10N6TM050
Each
$2,639.04(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-4111
  • Mfr. Part No. 1SDA072219R1
Each
$16,300.05(exc. GST)
In Stock
Circuit-breaker/thermal 0.5 A
  • RS Stock No. 577-271
  • Mfr. Part No. 4410.0012
Each
$27.23(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 A9V6 MCB, 2P, 40A, Type A-SI, 230-240V AC
  • RS Stock No. 212-254
  • Mfr. Part No. A9V61240
Each
$855.38(exc. GST)
In Stock
Eaton 250V dc Tool Circuit Trip for use with PKE, Trip indicator PKZ0(4)
  • RS Stock No. 240-2868
  • Mfr. Part No. 199329 AGM2-10-PKZ0-PI
Each
$58.06(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-4741
  • Mfr. Part No. 1SDA073022R1
Each
$24,569.22(exc. GST)
Temporarily out of stock
Schneider Electric Resi9 R9F2 MCB, 1P, 32A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-142
  • Mfr. Part No. R9F24132
Each
$94.85(exc. GST)
Last RS stock
Littelfuse PC Board Non Resettable Fuse, Radial 315mA, 125V ac
  • RS Stock No. 738-3302
  • Mfr. Part No. 39603150000
Each (In a Pack of 10)
$1.808(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-4562
  • Mfr. Part No. 1SDA072810R1
Each
$18,710.56(exc. GST)
In Stock
Circuit-breaker/thermal 13 A
  • RS Stock No. 577-460
  • Mfr. Part No. 1140-G111-P1M1-13A
Each
$24.16(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 40A, Fixed
  • RS Stock No. 122-379
  • Mfr. Part No. LV510593
Each
$835.88(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-4423
  • Mfr. Part No. 1SDA072614R1
Each
$62,631.01(exc. GST)
In Stock
RS PRO 16A M Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 182-4018P
Each (Supplied in a Box)
$21.256(exc. GST)
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