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

185 of 999+
Being discontinued
RS PRO 15A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8139
Each (In a Pack of 50)
$0.613(exc. GST)
In Stock
Schneider Electric Acti9 Acti9 iC60 MCB, 1P, 1A Curve C, 500V AC, 72V DC, 230 V Breaking Capacity
  • RS Stock No. 479-575
  • Mfr. Part No. A9F94101
Each
$293.70(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 654-489
  • Mfr. Part No. C080N350FM
Each
$8,892.97(exc. GST)
In Stock
nVent ERIFLEX ERIFLEX Busbar Connector
  • RS Stock No. 277-6096
  • Mfr. Part No. 550250
Each (In a Pack of 100)
$1.017(exc. GST)
Temporarily out of stock
Eaton 5A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3888
  • Mfr. Part No. FNM-5
Each
$53.64(exc. GST)
In Stock
Eaton 8A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9387
  • Mfr. Part No. S500-8-R
1 Bag of 1000
$571.03(exc. GST)
Temporarily out of stock
Eaton 30A Fuse Holder, 3P, 600V ac/dc
  • RS Stock No. 261-310
  • Mfr. Part No. CHCC3DU
1 Pack of 4
$195.95(exc. GST)
Temporarily out of stock
Eaton 63A Cartridge Fuse, 25 x 110mm
  • RS Stock No. 228-785
  • Mfr. Part No. CEO63
1 Pack of 10
$851.14(exc. GST)
In Stock
Mersen 25A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 244-8528
  • Mfr. Part No. HP10M25
1 Box of 10
$274.88(exc. GST)
In Stock
Eaton 100A Bolted Tag Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 182-1567
  • Mfr. Part No. 100FE
Each
$364.90(exc. GST)
In Stock
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 335-282
  • Mfr. Part No. R9D87806
Each
$206.26(exc. GST)
In Stock
Siemens 63A Bolted Tag Fuse, NH000, 690V
  • RS Stock No. 210-6982
  • Mfr. Part No. 3NE8718-1
Each (In a Pack of 10)
$136.53(exc. GST)
In Stock
Better World
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 209-5075
  • Mfr. Part No. 3VA1220-4EF32-0AA0
Each
$1,485.06(exc. GST)
Temporarily out of stock
Clipsal Electrical MAX9 Busbar, 230V ac, 18mm Pitch
  • RS Stock No. 282-3902
  • Mfr. Part No. MX9B112N
Each
$61.83(exc. GST)
In Stock
Europa 3 Phase Distribution Board, 18 Way, 125 A
  • RS Stock No. 849-6415
  • Mfr. Part No. TPN06
Each
$992.21(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-813
  • Mfr. Part No. 3VA6110-7KL31-2AA0
Each
$5,247.35(exc. GST)
Temporarily out of stock
Eaton NZM Undervoltage Release for use with Circuit Breaker
  • RS Stock No. 242-984
  • Mfr. Part No. 189761 NZM2/3-XU220-250DC-PI
Each
$373.78(exc. GST)
In Stock
Schurter 0.5A Resettable Surface Mount Fuse, 15V dc
  • RS Stock No. 270-7979
  • Mfr. Part No. PFMF.050.2
Each
$0.64(exc. GST)
Temporarily out of stock
Eaton NZM1 Cover for use with N(S)1(-4), NZM1(-4), PN1(-4)
  • RS Stock No. 255-166
  • Mfr. Part No. 260021 NZM1-XKSA
Each
$48.28(exc. GST)
In Stock
Eaton Moeller xPole 3 Phase Busbar, 500V
  • RS Stock No. 252-825
  • Mfr. Part No. 215645 EVG-3PHAS/9MODUL
Each
$20.37(exc. GST)
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