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

34963 Products showing for Fuses & Circuit Breakers

129 of 999+
In Stock
nVent ERICO Surge Protector, 65kA, 1550V ac, DIN Rail Mount
  • RS Stock No. 277-6229
  • Mfr. Part No. DT1M27540R
Each
$2,443.32(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Terminal Block for use with Distribution Board
  • RS Stock No. 336-616
  • Mfr. Part No. SE125L4
Each
$191.59(exc. GST)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 767-5216
Each (In a Pack of 10)
$1.167(exc. GST)
In Stock
Siemens 63A NH Fuse, NH2, 500V ac
  • RS Stock No. 396-049
  • Mfr. Part No. 3NA3222
Each (In a Pack of 3)
$55.50(exc. GST)
Temporarily out of stock
Schneider Electric Resi9 Two Phase Distribution Board, 90 A
  • RS Stock No. 276-8960
  • Mfr. Part No. R9H18403
Each
$243.14(exc. GST)
Temporarily out of stock
Eaton Trip Unit for use with IZMX…
  • RS Stock No. 239-925
  • Mfr. Part No. 184951 IZMX-PXRV-AM-1
Each
$10,146.35(exc. GST)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 250A, Fixed Mount
  • RS Stock No. 254-6359
  • Mfr. Part No. C25H3TM250
Each
$3,415.12(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 150A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 269-954
  • Mfr. Part No. 3VA6115-8JT41-2AA0
Each
$8,947.38(exc. GST)
In Stock
RS PRO 1A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8093
Each (In a Pack of 20)
$1.223(exc. GST)
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 12A, 63V
  • RS Stock No. 252-2156
Each (On a Tape of 4000)
$0.736(exc. GST)
Temporarily out of stock
Eaton 25A Tag Fuse, 12 x 47mm, 240V
  • RS Stock No. 228-979
  • Mfr. Part No. SSD25
1 Pack of 20
$378.69(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 3.15A, 125V
  • RS Stock No. 738-2902P
  • Mfr. Part No. 04513.15MRL
Each (Supplied on a Reel)
$1.72(exc. GST)
Temporarily out of stock
ABB 200A Tag Fuse, NH1, 690V
  • RS Stock No. 250-4468
  • Mfr. Part No. 1SCA022701R0290
1 Box of 3
$152.99(exc. GST)
Temporarily out of stock
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 247-2759
  • Mfr. Part No. G214113
1 Box of 10
$138.11(exc. GST)
Temporarily out of stock
Schneider Electric Vertical Busbar, Canalis Series
  • RS Stock No. 341-473
  • Mfr. Part No. KSA1000ED4307
Each
$10,239.96(exc. GST)
In Stock
Siemens SIRIUS 3 Phase Busbar, 690V, 45mm Pitch
  • RS Stock No. 246-5162
  • Mfr. Part No. 3RV1915-1DB
Each
$116.28(exc. GST)
Temporarily out of stock
Eaton 100A Fuse Holder for 65 x 190 x 255mm Fuse, 1P, 400V ac
  • RS Stock No. 261-461
  • Mfr. Part No. FN03C
1 Pack of 10
$1,918.61(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 4 channels
  • RS Stock No. 259-3855
  • Mfr. Part No. 1SDA071867R1
Each
$54,007.64(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-4143
  • Mfr. Part No. 1SDA072256R1
Each
$14,347.50(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 200A, Fixed Mount
  • RS Stock No. 260-7974
  • Mfr. Part No. C25R3TM200
Each
$6,077.95(exc. GST)
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