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

204 of 999+
Siemens SIRIUS Cover for use with 3RV1 Series
  • RS Stock No. 755-2870
  • Mfr. Part No. 3RV1935-6A
Each
$30.62(exc. GST)
Eaton IKA Industrial Distribution Board Distribution Board
  • RS Stock No. 125-688
  • Mfr. Part No. 174191 IKA-2/24-ST-UV
Each
$405.41(exc. GST)
Better World
Schneider Electric Compact Nsx, Easypact Cvs Cable Connector for use with 2 Cables 35 mm2 →240 mm2
  • RS Stock No. 221-1229
  • Mfr. Part No. LV432481
Each
$385.00(exc. GST)
Schneider Electric Acti9 1 Phase Distribution Board, 14 Way, 125 A
  • RS Stock No. 339-615
  • Mfr. Part No. SEA9APN14
Each
$467.69(exc. GST)
Finder Busbar
  • RS Stock No. 123-2855
  • Mfr. Part No. 097.58
Each
$5.84(exc. GST)
Siemens 20A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 395-799
  • Mfr. Part No. 3NC1020
Each (In a Pack of 10)
$44.503(exc. GST)
Phoenix Contact Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 207-2675
  • Mfr. Part No. 1065320
Each
$296.14(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-279
  • Mfr. Part No. 3VA6210-7HL41-0AA0
Each
$12,003.67(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-696
  • Mfr. Part No. 3VA6140-7JQ31-0AA0
Each
$9,804.59(exc. GST)
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 3A Curve K, 15 kA Breaking Capacity
  • RS Stock No. 219-9295
  • Mfr. Part No. A9F95203
Each
$601.07(exc. GST)
Phoenix Contact CB Electronic Circuit breaker 4A 24V CB E1, On Base Element
  • RS Stock No. 217-6384
  • Mfr. Part No. 2800904
Each
$117.67(exc. GST)
Eaton Rear Support for use with N1, NS1, NZM1, PN1
  • RS Stock No. 231-523
  • Mfr. Part No. 107245 NZM1-XRAV
Each
$466.20(exc. GST)
ABB Emax2 Electronic Circuit Breaker 250A Ekip Touch LI, 4 channels
  • RS Stock No. 259-3391
  • Mfr. Part No. 1SDA071324R1
Each
$13,392.07(exc. GST)
Eaton 63A Cartridge Fuse, 64 x 442mm
  • RS Stock No. 254-886
  • Mfr. Part No. 24THMEJ63
Each
$620.64(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 260-266
  • Mfr. Part No. 3VA6325-6HL41-0AA0
Each
$7,041.30(exc. GST)
Leitungsschutzschalter Resi9 1P, 10A, C
  • RS Stock No. 537-810
  • Mfr. Part No. R9F28110
Each
$63.78(exc. GST)
Limitor Thermal Fuse +115°C 3 A, 250V ac
  • RS Stock No. 124-5058
  • Mfr. Part No. A2-3AF
Each (In a Pack of 5)
$2.53(exc. GST)
Better World
Schneider Electric Busbar
  • RS Stock No. 219-9029
  • Mfr. Part No. AK5JB143
Each
$517.52(exc. GST)
Eaton 6A Tag Fuse, 440V ac
  • RS Stock No. 261-436
  • Mfr. Part No. XS6
1 Pack of 10
$565.03(exc. GST)
Eaton 250A Centred Tag Fuse, NH1, 690V ac
  • RS Stock No. 703-8800
  • Mfr. Part No. 250NHG1B-690
Each
$33.19(exc. GST)
1
204
1758
Results per page

Related links