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

81 of 999+
Littelfuse 0.33A Resettable Fuse, 240V dc
  • RS Stock No. 495-0741P
  • Mfr. Part No. LVR033K
Each (Supplied in a Bag)
$1.274(exc. GST)
RS PRO 4A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 721-1601
Each (In a Pack of 10)
$2.683(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7716
  • Mfr. Part No. 2CDS252001R0164 S202-C16
Each
$199.06(exc. GST)
Eaton 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1408
Each (In a Pack of 10)
$0.842(exc. GST)
Better World
ABB Compact Home SH200 MCB, 1P, 32A Curve B, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8188
  • Mfr. Part No. 2CDS211001R0325 SH201-B32
Each
$34.38(exc. GST)
Siemens SENTRON 1 Phase Busbar, 17.6mm Pitch
  • RS Stock No. 328-521
  • Mfr. Part No. 5ST3701-3HG
Each
$255.84(exc. GST)
Eaton 100A Cartridge Fuse, 1 x 2.66in
  • RS Stock No. 228-802
  • Mfr. Part No. TPL-BD
1 Pack of 5
$1,157.27(exc. GST)
ABB System Pro M Compact S200 MCB, 4P, 40A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6202
  • Mfr. Part No. 2CDS254001R0405 - S204B40
Each
$531.25(exc. GST)
Legrand, DX3 MCCB 1P 25A, Breaking Capacity 4.5 kA, DIN Rail Mount
  • RS Stock No. 731-9544
  • Mfr. Part No. 4 067 76
Each
$37.22(exc. GST)
Hager BFH RCCB, 40A, 4 Pole, 300mA, Type A-HI
  • RS Stock No. 597-990
  • Mfr. Part No. BFH840
Each
$832.81(exc. GST)
SENTRON Shunt Trip Voltage Release for use with 3VA41, 3VA51-59, 3VA61-69 Series
  • RS Stock No. 263-700
  • Mfr. Part No. 3VA9978-0BA24
Each
$935.62(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 6A Tag Fuse, 22 x 82mm, 0.46/0.69kV
  • RS Stock No. 228-830
  • Mfr. Part No. 6H07-660
1 Pack of 20
$1,775.87(exc. GST)
20A NH Fuse, NH0, 500V
  • RS Stock No. 252-915
  • Mfr. Part No. 20NHG0B
1 Pack of 3
$46.51(exc. GST)
Better World
Schneider Electric Linergy Busbar, 690V, 54mm Pitch
  • RS Stock No. 608-8242
  • Mfr. Part No. GV2G454
Each
$105.68(exc. GST)
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 257-960
  • Mfr. Part No. 284642 BC-O-3/36-TW-ECO
Each
$360.26(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-503
  • Mfr. Part No. 3VA6110-5HN31-2AA0
Each
$2,377.01(exc. GST)
Eaton 250A Tag Fuse, NH2, 1kV
  • RS Stock No. 282-6184
  • Mfr. Part No. BSF-250G-NH210
Each
$629.75(exc. GST)
Deltron Earthing Strap
  • RS Stock No. 181-1267
  • Mfr. Part No. 4ELM6
Each
$2.83(exc. GST)
Mersen 6A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0597
  • Mfr. Part No. Y1014574 / FR10GR69V6
Each
$28.09(exc. GST)
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