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

288 of 999+
Currently unavailable
ETA Thermal Circuit Breaker - 3120-N 2 Pole 50 V DC, 240 V AC Voltage Rating, 6A Current Rating
  • RS Stock No. 210-2082
  • Mfr. Part No. 3120-N526-P7T1-W01D-6A-A04010611M
Each
$140.81(exc. GST)
Temporarily out of stock
Eaton 160A NH Fuse, 63 x 40 x 150mm, 500V ac
  • RS Stock No. 244-693
  • Mfr. Part No. 160NHG02BI NH FUSE 160A 500V GL/GG SIZE 02
1 Pack of 3
$69.88(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-3156
  • Mfr. Part No. 1SDA071011R1
Each
$13,790.03(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 3 channels
  • RS Stock No. 259-3277
  • Mfr. Part No. 1SDA071175R1
Each
$37,429.96(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX400/630 Circuit Breakers
  • RS Stock No. 260-8076
  • Mfr. Part No. C4037E400
Each
$14,449.07(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)2(-4), N(S)3(-4), NZM2(-4), NZM3(-4)
  • RS Stock No. 242-983
  • Mfr. Part No. 189751 NZM2/3-XU48AC-PI
Each
$373.78(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A Ekip Touch LSI, 4 channels
  • RS Stock No. 259-3411
  • Mfr. Part No. 1SDA071345R1
Each
$11,823.25(exc. GST)
Temporarily out of stock
ABB 355A Tag Fuse, 150x 40 x 84mm, 500V
  • RS Stock No. 251-3487
  • Mfr. Part No. 1SCA022627R6600
Each
$127.27(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4162
  • Mfr. Part No. 1SDA072278R1
Each
$18,622.03(exc. GST)
Temporarily out of stock
xComfort Distribution Board, 1 Way
  • RS Stock No. 262-803
  • Mfr. Part No. 302437 KLV-60UPP-HY36-F
Each
$944.20(exc. GST)
Temporarily out of stock
xEnergy Basic Distribution Board Enclosure
  • RS Stock No. 252-465
  • Mfr. Part No. 193183 BPM-O-600/11-P-EP-W
Each
$1,862.48(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip Touch LSI, 3 channels
  • RS Stock No. 259-3266
  • Mfr. Part No. 1SDA071165R1
Each
$31,185.47(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 257-869
  • Mfr. Part No. 281698 BC-U-1/12-TW-ECO
Each
$101.48(exc. GST)
Last RS stock
Wickmann SMD Non Resettable Fuse 10A, 32V
  • RS Stock No. 174-0913
  • Mfr. Part No. 0501010.WR
Each (In a Pack of 10)
$1.266(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Touch LSI, 3 channels
  • RS Stock No. 259-3307
  • Mfr. Part No. 1SDA071215R1
Each
$44,715.20(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 50A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9374
  • Mfr. Part No. 3VA1150-6GF42-0AA0
Each
$1,399.49(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3405
  • Mfr. Part No. 1SDA071339R1
Each
$18,634.06(exc. GST)
Temporarily out of stock
ABB 6A Tag Fuse, 125 x 30 x 60mm, 500V
  • RS Stock No. 251-3439
  • Mfr. Part No. 1SCA022627R1800
1 Box of 3
$81.69(exc. GST)
In Stock
Bulgin 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 512-5996
  • Mfr. Part No. FX0462
Each (In a Pack of 5)
$16.066(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9768
  • Mfr. Part No. 3VA1116-4ED42-0AA0
Each
$2,217.15(exc. GST)
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