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

206 of 999+
Better World
Siemens SIRIUS Electronic Circuit Breaker 45A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-069
  • Mfr. Part No. 3RV2431-4VA10
Each
$1,011.27(exc. GST)
Siemens, SENTRON MCCB 3P 300A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-428
  • Mfr. Part No. 3VA5330-6EF31-0AA0
Each
$8,441.61(exc. GST)
Siemens ALPHA Assembly Kit for use with 3VL Molded Case Circuit Breakers
  • RS Stock No. 629-286
  • Mfr. Part No. 8GK4720-5KK10
Each
$444.64(exc. GST)
Siemens SENTRON 5SY7 MCB, 2P, 1A Curve D, 400V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-386
  • Mfr. Part No. 5SY7201-8
Each
$311.48(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-660
  • Mfr. Part No. 3VA6110-7HM31-2AA0
Each
$3,610.34(exc. GST)
ABB Tmax T Motor Operator for use with MCCB
  • RS Stock No. 232-0141
  • Mfr. Part No. 1SDA060398R1 MOE 220-250VACDC T6
Each
$3,286.60(exc. GST)
Schneider Electric, Compact MCCB 4P 630A, Breaking Capacity 75 kA
  • RS Stock No. 340-919
  • Mfr. Part No. C063B4WM
Each
$10,920.01(exc. GST)
ABB Emax2 Electronic Circuit Breaker 250A Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-3988
  • Mfr. Part No. 1SDA072049R1
Each
$19,169.77(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - IUGN66 2 Pole Panel Mount, 2.5A Current Rating
  • RS Stock No. 275-0295
  • Mfr. Part No. IUGN66-1-72-2.50
Each
$337.46(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 268-656
  • Mfr. Part No. 3VA6110-6KP41-2AA0
Each
$5,964.92(exc. GST)
Eaton 160A Tag Fuse, NH2, 1kV
  • RS Stock No. 282-6183
  • Mfr. Part No. BSF-160G-NH210-B
Each
$607.05(exc. GST)
Bourns 0.75A Resettable Fuse, 60V
  • RS Stock No. 647-8516P
  • Mfr. Part No. MF-R075
Each (Supplied in a Bag)
$0.675(exc. GST)
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 209-6433
  • Mfr. Part No. X1036975 / BMD42V6
Each (In a Pack of 10)
$9.785(exc. GST)
Schneider Electric MASTERPACT NW MCB, 3P, 2.5kA
  • RS Stock No. 247-1895
  • Mfr. Part No. 48300
Each
$50,709.65(exc. GST)
Schneider Electric, ComPacT MCCB 4P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 654-621
  • Mfr. Part No. C12B6TM125L
Each
$1,855.75(exc. GST)
Bourns 0.065A Resettable Fuse, 220V
  • RS Stock No. 167-4778
  • Mfr. Part No. CMF-RL50-0
Each (In a Box of 600)
$0.695(exc. GST)
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 269-7214
  • Mfr. Part No. 3VA9504-0JG32
Each (In a Pack of 4)
$960.785(exc. GST)
Eaton 100mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9434
  • Mfr. Part No. S501-100-R
1 Bag of 1000
$7,001.50(exc. GST)
Schneider Electric Acti 9 iC60N MCB, 2P, 4A Curve C
  • RS Stock No. 230-6655
  • Mfr. Part No. A9F44204
Each
$78.19(exc. GST)
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 4 channels
  • RS Stock No. 259-3896
  • Mfr. Part No. 1SDA071925R1
Each
$101,882.33(exc. GST)
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