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

142 of 999+
Eaton 3.7A Resettable Fuse, 6V
  • RS Stock No. 225-8297
  • Mfr. Part No. PTSLR18126V370
Each (In a Pack of 10)
$1.453(exc. GST)
Siemens SENTRON Conversion Kit
  • RS Stock No. 277-0922
  • Mfr. Part No. 3WA9111-0EK13
1 Set
$452.39(exc. GST)
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0823
  • Mfr. Part No. 3WA9111-0AV24
Each
$225.35(exc. GST)
TE Connectivity 30A Fuse Holder for 10 x 38mm Fuse, 2P, 600V
  • RS Stock No. 299-074
  • Mfr. Part No. 1SNF100026R0000
Each
$18.70(exc. GST)
Mersen 50A NH Fuse, NH00, 690V ac
  • RS Stock No. 270-3144
  • Mfr. Part No. Y228457
Each
$40.36(exc. GST)
Schneider Electric ComPacT NSX400...630 Vigi add-on for use with Wiring
  • RS Stock No. 119-201
  • Mfr. Part No. LV432466
Each
$11,100.24(exc. GST)
Siemens SENTRON Operations Counter
  • RS Stock No. 277-0755
  • Mfr. Part No. 3WA9111-0AH05
Each
$994.11(exc. GST)
Schurter PC Board Non Resettable Fuse, Axial 3A, 125V ac/dc
  • RS Stock No. 110-8521
  • Mfr. Part No. 7010.7110.13
Each (In a Pack of 5)
$1.26(exc. GST)
Siemens SENTRON 5SV60 MCB, 1P + N, 25A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-477
  • Mfr. Part No. 5SV6016-6KP25
Each
$520.89(exc. GST)
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-776
  • Mfr. Part No. A9D73632
Each
$681.74(exc. GST)
Phoenix Contact 6.3A Base Mount Fuse Holder for 5 x 20mm Fuse, 1P, 60V dc
  • RS Stock No. 207-2666
  • Mfr. Part No. 1054762
Each
$34.80(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 4P, 40A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7930
  • Mfr. Part No. 2CDS254001R0401 S204-D40
Each
$488.36(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 2P, 20A Curve B, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7564
  • Mfr. Part No. 2CDS252001R0205 S202-B20
Each
$107.71(exc. GST)
315A Tag Fuse, 86 x 150mm, 690V
  • RS Stock No. 263-284
  • Mfr. Part No. 315NHG3B-690 NH FUSE 315A 690V gG SIZE 3
1 Pack of 3
$148.93(exc. GST)
Eaton 10A Slow-Blow Cartridge Fuse, 10 x 38mm
  • RS Stock No. 228-663
  • Mfr. Part No. C10M10 CYLINDRICAL FUSE 10 x 38 10A AM 500V AC
1 Pack of 10
$27.62(exc. GST)
Schurter UHB Series Thermoplastic Base Mount Fuse Holder Cover for 5 x 20mm Fuse
  • RS Stock No. 337-1327
Each (In a Pack of 10)
$2.186(exc. GST)
ABB 200A Tag Fuse, NH1, 500V
  • RS Stock No. 250-4428
  • Mfr. Part No. 1SCA022697R7570
1 Box of 3
$173.02(exc. GST)
Eaton 63A NH Fuse, NH00, 500V
  • RS Stock No. 181-8785
  • Mfr. Part No. 63NHG00B
Each
$14.95(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels
  • RS Stock No. 156-815
  • Mfr. Part No. 3VA2225-8JQ32-0AA0
Each
$7,113.84(exc. GST)
Siemens 40A Cartridge Fuse, 22 x 127mm
  • RS Stock No. 627-101
  • Mfr. Part No. 3NC2340-0MK
1 Pack of 5
$496.05(exc. GST)
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