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

84 of 999+
Temporarily out of stock
Siemens SENTRON 5SV60 MCB, 2P, 40A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-334
  • Mfr. Part No. 5SV6016-6KP40
Each
$520.89(exc. GST)
In Stock
Littelfuse 70A Tan Blade Car Fuse, 32V dc
  • RS Stock No. 219-3609
  • Mfr. Part No. 0299070.TXN
Each (In a Pack of 10)
$6.141(exc. GST)
In Stock
Eaton 17.5A T Cartridge Fuse, 21 x 57mm
  • RS Stock No. 182-1607
  • Mfr. Part No. LPJ-17-1-2SP
Each
$255.82(exc. GST)
Temporarily out of stock
Eaton Connection Clamp for use with Round Conductor Connection
  • RS Stock No. 259-868
  • Mfr. Part No. 292886 BK25/3-PKZ0-U
1 Pack of 10
$258.03(exc. GST)
Currently unavailable
Bourns 150A Tag Fuse, 66mm, 240 V ac, 150V dc, 24.1mm
  • RS Stock No. 254-4206
  • Mfr. Part No. PF-MB1-150
Each (In a Box of 10)
$109.349(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-252
  • Mfr. Part No. 3VA5320-5EC41-2AA0
Each
$6,767.88(exc. GST)
In Stock
Hager Electronic Circuit Breaker 10A MFS, 1 channels
  • RS Stock No. 251-2067
  • Mfr. Part No. MFS710
Each (In a Pack of 12)
$52.013(exc. GST)
In Stock
ABB 24 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1906
  • Mfr. Part No. 1SL1204A00 65P12X22
Each
$80.71(exc. GST)
In Stock
Schneider Electric Easypact Cvs100...250, Nsx100...250 Dc DIN Rail Adapter for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1184
  • Mfr. Part No. LV429305
Each
$306.81(exc. GST)
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V Voltage Rating DIN Rail Mount, 65A Current
  • RS Stock No. 272-858
  • Mfr. Part No. GV3L65
Each
$425.63(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 4 channels
  • RS Stock No. 156-801
  • Mfr. Part No. 3VA2463-8KQ42-0AA0
Each
$14,745.54(exc. GST)
In Stock
ABB System Pro M Compact S200L MCB, 1P, 10A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 183-3628
  • Mfr. Part No. 2CDS241701R0104
Each
$53.74(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 iID RCCB, 63A, 4 Pole, 300mA, Type B-SI, 400V ac
  • RS Stock No. 335-137
  • Mfr. Part No. A9Z65463
Each
$3,606.99(exc. GST)
Limited stock
Littelfuse 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4533
  • Mfr. Part No. 0218010.MXP
Each (In a Pack of 10)
$2.51(exc. GST)
In Stock
Schurter Thermal Circuit Breaker - TA45 2 Pole 60 V dc, 240V ac Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 868-9030
  • Mfr. Part No. 4430.0022
Each
$46.83(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-813
  • Mfr. Part No. 3VA6110-7KL31-2AA0
Each
$5,247.35(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 4P 250A, Fixed Mount
  • RS Stock No. 254-6358
  • Mfr. Part No. C25F4
Each
$1,791.45(exc. GST)
Temporarily out of stock
Schneider Electric Cover for use with INS100, INS160
  • RS Stock No. 280-8418
  • Mfr. Part No. 28958
Each
$26.80(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A 1SDA07, 4 channels
  • RS Stock No. 259-3415
  • Mfr. Part No. 1SDA071349R1
Each
$19,322.81(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 225A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 428-705
  • Mfr. Part No. NJJF36225TW
Each
$9,181.99(exc. GST)
Results per page
1
84
1746

Related links