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

1756 of 999+
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-4704
  • Mfr. Part No. 1SDA072982R1
Each
$19,662.76(exc. GST)
Schneider Electric, PowerPact B Circuit breaker 3P 25A, Breaking Capacity 25 KA, Clip-On
  • RS Stock No. 119-190
  • Mfr. Part No. BJF36025
Each
$2,743.93(exc. GST)
Bourns Surface Mount Fuse 7A, 48V dc
  • RS Stock No. 245-9232P
  • Mfr. Part No. SF-1206F700M-2
Each (Supplied on a Reel)
$1.026(exc. GST)
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 3 channels
  • RS Stock No. 259-4266
  • Mfr. Part No. 1SDA072394R1
Each
$18,696.36(exc. GST)
Schneider Electric Resi9 R9F2 MCB, 3P, 32A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 212-088
  • Mfr. Part No. R9F28332
Each
$457.99(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 4 channels
  • RS Stock No. 156-851
  • Mfr. Part No. 3VA2325-7HK42-0AA0
Each
$6,708.64(exc. GST)
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0283
  • Mfr. Part No. 8GK1061-3KK20
Each
$2,348.80(exc. GST)
Socomec 40A F Cartridge Fuse, 14 x 51mm
  • RS Stock No. 223-2835
  • Mfr. Part No. 60530040
Each (In a Pack of 10)
$11.447(exc. GST)
Lovato 1 Phase Surge Protector, 5kA
  • RS Stock No. 216-8295
  • Mfr. Part No. SA31NA320R
Each
$243.35(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 4 channels
  • RS Stock No. 259-3489
  • Mfr. Part No. 1SDA071454R1
Each
$12,588.52(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 250A 1SDA07, 3 channels
  • RS Stock No. 259-9863
  • Mfr. Part No. 1SDA070693R1
Each
$12,320.70(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-461
  • Mfr. Part No. 3VA6140-8KM31-0AA0
Each
$5,651.00(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Dip LI, 4 channels
  • RS Stock No. 259-4631
  • Mfr. Part No. 1SDA072901R1
Each
$13,864.33(exc. GST)
Schneider Electric Multi9 M9F1 MCB, 2P, 1A Curve C, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-123
  • Mfr. Part No. M9F11201
Each
$324.21(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-683
  • Mfr. Part No. 3VA6140-6KM31-0AA0
Each
$8,615.88(exc. GST)
Socomec 20A F Cartridge Fuse, 14 x 51mm
  • RS Stock No. 223-2752
  • Mfr. Part No. 170L1420
Each (In a Pack of 10)
$22.015(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 4 channels
  • RS Stock No. 259-4552
  • Mfr. Part No. 1SDA072801R1
Each
$9,374.44(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-511
  • Mfr. Part No. 3VA6140-7HL41-2AA0
Each
$6,104.64(exc. GST)
Schneider Electric, PowerPact B Circuit breaker 4P 100A, Breaking Capacity 18 KA, Clip-On
  • RS Stock No. 119-526
  • Mfr. Part No. BDF46100
Each
$2,530.76(exc. GST)
RS PRO SMD Non Resettable Fuse 35A, 250V
  • RS Stock No. 182-4097P
Each (Supplied in a Box)
$5.318(exc. GST)
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