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

1724 of 999+
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3915
  • Mfr. Part No. 1SDA071952R1
Each
$61,420.28(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-4129
  • Mfr. Part No. 1SDA072240R1
Each
$22,192.52(exc. GST)
Schneider Electric Multi9 M9F1 MCB, 4P, 16A Curve B, 440V AC, 250V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-191
  • Mfr. Part No. M9F10416
Each
$344.09(exc. GST)
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-4327
  • Mfr. Part No. 1SDA072491R1
Each
$29,141.06(exc. GST)
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 25 kA
  • RS Stock No. 249-228
  • Mfr. Part No. 3VA6610-5KL32-0AA0
Each
$17,334.15(exc. GST)
Schneider Electric EasyPact Electronic Circuit Breaker 63A, Fixed
  • RS Stock No. 122-509
  • Mfr. Part No. LV510565
Each
$543.00(exc. GST)
Schneider Electric Multi9 M9F1 MCB, 3P, 4A Curve C, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-125
  • Mfr. Part No. M9F11304
Each
$502.13(exc. GST)
RS PRO PC Board Non Resettable Fuse, Axial 12A, 32V ac/dc
  • RS Stock No. 764-9504P
Each (Supplied in a Bag)
$0.975(exc. GST)
Socomec 80A F Cartridge Fuse, 22 x 58mm
  • RS Stock No. 223-2810
  • Mfr. Part No. 60320080
Each (In a Pack of 10)
$8.428(exc. GST)
Siemens ALPHA Assembly Kit for use with 3VA1 Molded Case Circuit Breakers
  • RS Stock No. 629-315
  • Mfr. Part No. 8GK6738-6KK13
Each
$734.80(exc. GST)
Schneider Electric, PowerPact Circuit Breaker Accessory 3P 150A, Breaking Capacity 65 KA, DIN Rail Mount
  • RS Stock No. 119-149
  • Mfr. Part No. NHGF36150TW
Each
$4,758.34(exc. GST)
Schneider Electric RCBO, 25A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 212-022
  • Mfr. Part No. R9D01625
Each
$293.58(exc. GST)
Schneider Electric Acti9 A9N1 MCB, 1P, 80A Curve D, 230-400V AC, 144V DC, 4.5 kA Breaking Capacity
  • RS Stock No. 212-172
  • Mfr. Part No. A9N18490
Each
$285.20(exc. GST)
Schneider Electric EasyPact Electronic Circuit Breaker 100A, Fixed
  • RS Stock No. 122-542
  • Mfr. Part No. LV510727
Each
$935.68(exc. GST)
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-4369
  • Mfr. Part No. 1SDA072548R1
Each
$49,287.12(exc. GST)
Schneider Electric Multi9 M9F1 MCB, 1P, 4A Curve D, 415V AC, 72V DC, 3 kA Breaking Capacity
  • RS Stock No. 212-194
  • Mfr. Part No. M9F12104
Each
$138.23(exc. GST)
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)1(-4), NZM1(-4)
  • RS Stock No. 253-551
  • Mfr. Part No. 259630 NZM1-XUHIV20L24DC
Each
$444.31(exc. GST)
Siemens ALPHA Distribution Board
  • RS Stock No. 628-859
  • Mfr. Part No. 8GK1383-1KK43
Each
$2,115.73(exc. GST)
Schneider Electric Acti9 Acti9 iC60 MCB, 3P, 3A Curve D, 400V AC, 180V DC, 50 kA Breaking Capacity
  • RS Stock No. 287-5953
  • Mfr. Part No. A9F75303
Each
$640.57(exc. GST)
Siemens ALPHA Distribution Board
  • RS Stock No. 629-349
  • Mfr. Part No. 8GK1383-2KK24
Each
$1,566.61(exc. GST)
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