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

140 of 999+
Europa 3 Phase Distribution Board, 18 Way, 125 A
  • RS Stock No. 849-6415
  • Mfr. Part No. TPN06
Each
$992.21(exc. GST)
Eaton 25A Rail Mount Fuse Holder Base, 3P, 500V ac
  • RS Stock No. 232-017
  • Mfr. Part No. 107965 DII-SO/25/3-R
Each
$68.76(exc. GST)
Socomec 40A Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 252-5299
  • Mfr. Part No. 170L2240
Each (In a Pack of 10)
$41.466(exc. GST)
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 221-5627
  • Mfr. Part No. 3-128-234
Each
$42.52(exc. GST)
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 15A Current Rating
  • RS Stock No. 221-5612
  • Mfr. Part No. 3-128-218
Each
$49.36(exc. GST)
Schneider Electric Flexible Busbar Trunking, 3mm, 400A, KSC40 Series
  • RS Stock No. 207-303
  • Mfr. Part No. KSC400ED4306
Each
$5,452.02(exc. GST)
Phoenix Contact CB-E1 Electronic Circuit breaker 4A 24V CB E1, On Base Element
  • RS Stock No. 217-6386
  • Mfr. Part No. 2800925
Each
$108.53(exc. GST)
Hager NGN MCB, 2P, 63A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4768
  • Mfr. Part No. NGN263
Each
$512.03(exc. GST)
Littelfuse 3A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0082
  • Mfr. Part No. 0313003.HXP
Each (In a Pack of 10)
$1.495(exc. GST)
Better World
Schneider Electric Straight Busbar Trunking, 2m, 40A, KBB Series
  • RS Stock No. 219-8867
  • Mfr. Part No. KBB40ED44203W
Each
$699.13(exc. GST)
Schneider Electric 4 Phase Surge Arrester, 75kA, 3000V (Volts), Clip-On Mount
  • RS Stock No. 438-793
  • Mfr. Part No. M9L57690
Each
$3,465.58(exc. GST)
Siemens SENTRON 5SP3 MCB, 3P, 35A, Type E, 25 kA Breaking Capacity
  • RS Stock No. 202-7112
  • Mfr. Part No. 5SP3835-2
Each
$609.71(exc. GST)
Schneider Electric, Compact MCCB 4P 800A, Fixed Mount
  • RS Stock No. 247-1811
  • Mfr. Part No. 33469
Each
$8,054.78(exc. GST)
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-809
  • Mfr. Part No. 568716
Each
$9.81(exc. GST)
Schneider Electric, PowerPact Circuit breaker 3P 110A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-941
  • Mfr. Part No. BGL36110LU
Each
$3,037.77(exc. GST)
Siemens 35A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 397-323
  • Mfr. Part No. 3NE1803-0
Each (In a Pack of 3)
$150.757(exc. GST)
Better World
Schneider Electric Acti9 1 Phase Busbar, 250 V, 440 V, 9mm Pitch
  • RS Stock No. 238-4081
  • Mfr. Part No. A9XPK714
Each
$1,118.56(exc. GST)
Better World
Schneider Electric Straight Busbar Trunking, 3m, 40A, Canalis KBB Series
  • RS Stock No. 211-0386
  • Mfr. Part No. KBB40ED2303W
Each
$463.77(exc. GST)
ETI 20A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-670
  • Mfr. Part No. 2312406
Each (In a Pack of 5)
$3.286(exc. GST)
Bourns Thermal Fuse +90°C 60 A, 28V
  • RS Stock No. 258-6359
  • Mfr. Part No. AC90ABD
Each
$3.25(exc. GST)
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