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

1748 of 999+
Temporarily out of stock
RS PRO SMD Non Resettable Fuse 35A, 250V
  • RS Stock No. 182-4097P
Each (Supplied in a Box)
$5.318(exc. GST)
Temporarily out of stock
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)
In Stock
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)
In Stock
Eaton 1.1A Resettable Fuse, 6V
  • RS Stock No. 225-8232
  • Mfr. Part No. PTSLR08056V110
1 Reel of 4000
$2,626.36(exc. GST)
Being discontinued
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)
Temporarily out of stock
Lovato 32A Rail Mount Fuse Holder, 1P, 1kV
  • RS Stock No. 216-8277
  • Mfr. Part No. FB01D1PL
Each
$32.23(exc. GST)
Temporarily out of stock
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)
Temporarily out of stock
Siemens SENTRON Option Plug
  • RS Stock No. 277-0903
  • Mfr. Part No. 3WA9111-0EB08
Each
$443.98(exc. GST)
Currently unavailable
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)
In Stock
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)
Temporarily out of stock
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)
Temporarily out of stock
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)
Unavailable
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)
Temporarily out of stock
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)
Temporarily out of stock
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)
Temporarily out of stock
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)
In Stock
Eaton Eaton Moeller Enclosure for use with PKZM0
  • RS Stock No. 272-2324
  • Mfr. Part No. 262681 CI-K2-PKZ0-NA-GR
Each
$70.75(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 1A, 32 V ac, 63V dc
  • RS Stock No. 665-7340P
  • Mfr. Part No. 3413.0115.22
Each (Supplied on a Reel)
$1.017(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4130
  • Mfr. Part No. 3VA2116-8HN46-0AA0
Each
$4,986.49(exc. GST)
In Stock
Eaton 1A Bolt Fixing Photovoltaic Fuse, 10 x 38mm, 1000V dc, 49.7mm
  • RS Stock No. 703-8248P
  • Mfr. Part No. PV-1A10-T
Each (Supplied in a Bag)
$63.79(exc. GST)
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