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

1757 of 999+
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 4 channels
  • RS Stock No. 259-3744
  • Mfr. Part No. 1SDA071719R1
Each
$39,474.24(exc. GST)
Schneider Electric R9R RCCB, 25A, 2 Pole, 10mA, Type A, 230V ac
  • RS Stock No. 212-340
  • Mfr. Part No. R9R26225
Each
$251.58(exc. GST)
Schneider Electric Acti9 Acti9 C120 MCB, 4P, 63A Curve B, 380 → 415V AC, 500V DC, 20 kA Breaking Capacity
  • RS Stock No. 106-756
  • Mfr. Part No. A9N18352
Each
$2,436.40(exc. GST)
Eaton 1.1A Resettable Fuse, 6V
  • RS Stock No. 225-8232
  • Mfr. Part No. PTSLR08056V110
1 Reel of 4000
$2,626.36(exc. GST)
RS PRO PC Board Non Resettable Fuse, Axial 2.5A, 250V ac
  • RS Stock No. 764-9554P
Each (Supplied in a Bag)
$1.218(exc. GST)
Lovato 32A Rail Mount Fuse Holder, 1P, 1kV
  • RS Stock No. 216-8277
  • Mfr. Part No. FB01D1PL
Each
$32.23(exc. GST)
Schneider Electric, ComPacT New generation MCCB 4P 160A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-223
  • Mfr. Part No. C25H47E160
Each
$14,879.63(exc. GST)
Siemens SENTRON Option Plug
  • RS Stock No. 277-0903
  • Mfr. Part No. 3WA9111-0EB08
Each
$443.98(exc. GST)
Schneider Electric, ComPacT NSX Circuit breaker 2P 100A, Breaking Capacity 18 KA, Fixed Mount
  • RS Stock No. 119-650
  • Mfr. Part No. C10F2TM100
Each
$1,621.08(exc. GST)
Sato Parts 10A Rail Mount Fuse Holder for 6.3 x 32 mm, 6.35 x 30 x 6.35 x 31.8 mm Fuse, 1P, 250V
  • RS Stock No. 229-4968
  • Mfr. Part No. F-700-BL
Each
$19.37(exc. GST)
Schneider Electric Resi9 R9F2 MCB, 1P, 25A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-140
  • Mfr. Part No. R9F23125
Each
$36.70(exc. GST)
SIBA SMD Non Resettable Fuse 2A, 250V
  • RS Stock No. 736-2642P
  • Mfr. Part No. 160000.2
Each (Supplied on a Reel)
$1.637(exc. GST)
Siemens SENTRON Cable Cage for use with Circuit Breaker 3VA1
  • RS Stock No. 272-0203
  • Mfr. Part No. 3VA9157-0KB02
Each
$49.09(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-9916
  • Mfr. Part No. 1SDA070763R1
Each
$12,320.70(exc. GST)
Schneider Electric Acti9 Acti9 C120 MCB, 2P, 63A Curve D, 380 → 415V AC, 20 kA Breaking Capacity
  • RS Stock No. 130-386
  • Mfr. Part No. A9N18382
Each
$1,178.97(exc. GST)
RS PRO Non-Resettable Surface Mount Fuse 500mA, 63V ac/dc
  • RS Stock No. 764-9390P
Each (Supplied on a Reel)
$0.094(exc. GST)
Littelfuse SMD Non Resettable Fuse 8A, 125V
  • RS Stock No. 895-1741
  • Mfr. Part No. 0476008.MR
Each (In a Pack of 10)
$2.812(exc. GST)
PL-PKZ0 Cover for use with PKZ0
  • RS Stock No. 252-893
  • Mfr. Part No. 203599 PL-PKZ0
1 Pack of 5
$17.26(exc. GST)
Schneider Electric Acti9 iID RCCB, 80A, 4 Pole, 30mA, Type A-SI, 380 → 415V ac
  • RS Stock No. 130-793
  • Mfr. Part No. A9R31480
Each
$2,759.87(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4553
  • Mfr. Part No. 3VA2125-7HL36-0AA0
Each
$1,832.63(exc. GST)
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