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

195 of 999+
Siemens 100A Tag Fuse, 149 x 72 x 62mm, 400V
  • RS Stock No. 269-7026
  • Mfr. Part No. 3NA3230-4KK04
Each
$473.30(exc. GST)
Eaton 400mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1256
  • Mfr. Part No. S500-400-R
Each (In a Pack of 10)
$1.023(exc. GST)
Schneider Electric RCBO, 40A Current Rating, 1P Poles, Type B, Acti9 Range
  • RS Stock No. 245-090
  • Mfr. Part No. A9D56840
Each
$408.12(exc. GST)
SIBA 4A F Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3442
  • Mfr. Part No. 70-010-04/4A
Each (In a Pack of 5)
$11.928(exc. GST)
Schurter 8A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 865-7538
  • Mfr. Part No. 0034.3126
Each (In a Pack of 100)
$0.812(exc. GST)
Eaton 5A Cartridge Fuse, 5.35 x 23mm, 240V
  • RS Stock No. 263-143
  • Mfr. Part No. C55
1 Pack of 10
$47.10(exc. GST)
Schurter 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 173-9698
  • Mfr. Part No. 0031.8211
Each (In a Box of 100)
$1.317(exc. GST)
ABB 224A Tag Fuse, NH1, 500V
  • RS Stock No. 251-3466
  • Mfr. Part No. 1SCA022627R4570
1 Box of 3
$123.59(exc. GST)
Wickmann 7.5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 174-0711
  • Mfr. Part No. 029707.5WXNV
Each (In a Pack of 50)
$0.399(exc. GST)
Osram Surge Protector, 15A, 10kV, Screw Mount Mount
  • RS Stock No. 251-5281
  • Mfr. Part No. SPD-10-275-G2
Each
$31.87(exc. GST)
Schneider Electric, Compact MCCB 3P 1.25kA, Fixed Mount
  • RS Stock No. 247-1792
  • Mfr. Part No. 33400
Each
$10,911.33(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 3 channels
  • RS Stock No. 157-093
  • Mfr. Part No. 3VA2116-5JP32-0AA0
Each
$4,344.68(exc. GST)
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 173-9653
  • Mfr. Part No. 3101.0010
Each (In a Box of 100)
$6.325(exc. GST)
Siemens 100A Rail Mount Fuse Holder for 22 x 58mm Fuse, 3P, 690V
  • RS Stock No. 225-5427
  • Mfr. Part No. 3NW7231
Each
$188.66(exc. GST)
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 339-365
  • Mfr. Part No. SEA9BPN2508S8
Each
$11,813.42(exc. GST)
Eaton 90A Bolted Tag Fuse, 500 V dc, 690V ac, 70mm
  • RS Stock No. 182-1755
  • Mfr. Part No. 90EET
Each
$86.21(exc. GST)
Eaton 31.5A Cartridge Fuse, 50 x 442mm
  • RS Stock No. 253-694
  • Mfr. Part No. 24FDMSJ31.5
1 Pack of 3
$4,741.21(exc. GST)
Littelfuse 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 787-4160
  • Mfr. Part No. 0297030.WXNV
Each (In a Pack of 10)
$0.513(exc. GST)
Siemens SENTRON 4 Phase Busbar, 18mm Pitch
  • RS Stock No. 226-0818
  • Mfr. Part No. 5ST3652
Each (In a Pack of 10)
$48.499(exc. GST)
Siemens SENTRON 1 Phase Busbar, 36mm Pitch
  • RS Stock No. 187-5218
  • Mfr. Part No. 5ST3765-1
Each
$88.99(exc. GST)
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