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

270 of 999+
Temporarily out of stock
Eaton IZMX/INX Phase Barrier for use with INX16…, IZMX16…
  • RS Stock No. 132-604
  • Mfr. Part No. 184131 IZMX-IB163-1
Each
$139.76(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4045
  • Mfr. Part No. 3VA2110-8KQ32-0AA0
Each
$5,095.79(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3534
  • Mfr. Part No. 1SDA071512R1
Each
$15,534.84(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3634
  • Mfr. Part No. 1SDA071608R1
Each
$24,755.05(exc. GST)
In Stock
Schurter 1.6A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 830-4224P
  • Mfr. Part No. 8020.5013.G
Each (Supplied in a Box)
$1.444(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4503
  • Mfr. Part No. 3VA2125-0HM46-0AA0
Each
$4,266.03(exc. GST)
Temporarily out of stock
ABB Accessories MS116/MS132 3 Phase Busbar, 690V ac
  • RS Stock No. 259-5995
  • Mfr. Part No. 1SAM201916R1114
Each
$61.23(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3473
  • Mfr. Part No. 1SDA071428R1
Each
$19,590.73(exc. GST)
In Stock
RS PRO SMD Non-Resettable Surface Mount Fuse 30A, 48V
  • RS Stock No. 252-2153
Each (In a Pack of 50)
$0.621(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4002
  • Mfr. Part No. 3VA2110-7KQ36-0AA0
Each
$4,355.99(exc. GST)
Temporarily out of stock
Schneider Electric MCCB 4P, Fixed Mount
  • RS Stock No. 178-7898
  • Mfr. Part No. LV426961
Each
$105.23(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-3073
  • Mfr. Part No. 1SDA070927R1
Each
$19,439.76(exc. GST)
Temporarily out of stock
Eaton Phase Busbar 1 Phase Busbar, 277V
  • RS Stock No. 230-996
  • Mfr. Part No. 121989 BB-UL-25/1P-1M/57
Each
$76.27(exc. GST)
Temporarily out of stock
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT 4 Pole 525V Voltage Rating Clip-On, 80A
  • RS Stock No. 357-329
  • Mfr. Part No. BGL46080LU
Each
$2,974.18(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7690
  • Mfr. Part No. C12F3TM160B
Each
$2,230.36(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-4227
  • Mfr. Part No. 1SDA072350R1
Each
$22,710.74(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 630A, Fixed Mount
  • RS Stock No. 260-8256
  • Mfr. Part No. C63V46E630
Each
$21,030.85(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 63A 3VA2, 4 channels
  • RS Stock No. 157-136
  • Mfr. Part No. 3VA2163-5HM42-0AA0
Each
$2,973.92(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7504
  • Mfr. Part No. C10W42D040
Each
$4,767.62(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 25A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-757
  • Mfr. Part No. 3RV2421-4DA20
Each
$635.61(exc. GST)
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