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

34912 Products showing for Fuses & Circuit Breakers

92 of 999+
Eaton 125A Slow-Blow Ceramic Cartridge Fuse, 56 x 46mm
  • RS Stock No. 244-278
  • Mfr. Part No. 125D200
1 Pack of 10
$514.10(exc. GST)
Siemens Base Mount Fuse Holder for 00-4 Fuse, 690V ac
  • RS Stock No. 203-2169
  • Mfr. Part No. 3NX1021
Each
$181.67(exc. GST)
Eaton 3.15A Cartridge Fuse, 195 x 25.4mm
  • RS Stock No. 228-648
  • Mfr. Part No. 12ABCNA3.15 12KV 3.15A FUSE
Each
$484.15(exc. GST)
Eaton 60A F Cartridge Fuse, 27 x 60mm
  • RS Stock No. 854-8951
  • Mfr. Part No. JKS-60
Each
$239.51(exc. GST)
Eaton 50A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8645P
  • Mfr. Part No. 50NHG000B
Each (Supplied in a Bag)
$11.57(exc. GST)
Siemens SENTRON 5SL66 MCB, 4P, 63A Curve B, 440V AC, 62.5V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-304
  • Mfr. Part No. 5SL6663-6
Each
$452.80(exc. GST)
Schneider Electric Canalis 3 Phase Busbar, 230-400V
  • RS Stock No. 212-223
  • Mfr. Part No. KBA25ED4300W
1 Pack of 6
$1,759.85(exc. GST)
Eaton 32A Tag Fuse, 440V ac
  • RS Stock No. 261-435
  • Mfr. Part No. XS32
1 Pack of 10
$696.62(exc. GST)
Better World
Schneider Electric Insulation accessory for use with Compact Nsx, Easypact Cvs
  • RS Stock No. 221-1261
  • Mfr. Part No. LV432579
Each
$88.00(exc. GST)
Eaton 16A Slow-Blow Cartridge Fuse, 14 x 51mm
  • RS Stock No. 228-674
  • Mfr. Part No. C14M16 CYLINDRICAL FUSE 14 x 51 16A AM 690V AC
1 Pack of 10
$39.85(exc. GST)
Littelfuse 80A Red Bolt Down Car Fuse, 32V dc
  • RS Stock No. 787-4407P
  • Mfr. Part No. 0298080.ZXEH
Each (Supplied in a Bag)
$11.52(exc. GST)
RS PRO 5A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 284-6487
Each (In a Pack of 10)
$5.675(exc. GST)
Eaton 3.15A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9417
  • Mfr. Part No. S506-3.15-R
1 Bag of 1000
$560.12(exc. GST)
nVent ERICO Surge Protector, 50kA, 1500V ac, DIN Rail Mount
  • RS Stock No. 277-6231
  • Mfr. Part No. DT230040R
Each
$699.57(exc. GST)
Hager RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type F
  • RS Stock No. 602-228
  • Mfr. Part No. ADF816F
Each
$671.94(exc. GST)
Eaton 30A Green Automotive Car Fuse, 32V dc
  • RS Stock No. 848-2560
  • Mfr. Part No. ATC-30
Each
$3.84(exc. GST)
RS PRO 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 563-447
Each (In a Pack of 10)
$0.462(exc. GST)
Eaton 100A Tag Fuse, 600V ac
  • RS Stock No. 261-733
  • Mfr. Part No. GSB100
1 Pack of 10
$14,619.17(exc. GST)
Schneider Electric Acti 9 C120N MCB, 1P, 125A Curve C, 415V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 230-6681
  • Mfr. Part No. A9N18359
Each
$122.15(exc. GST)
Mersen 2A Offset Tag Fuse, F1, 250 V dc, 550V ac
  • RS Stock No. 178-1002
  • Mfr. Part No. C1006643 / BNS55V2
Each (In a Pack of 10)
$10.045(exc. GST)
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