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

285 of 999+
Temporarily out of stock
Eaton Distribution Parts 3 Phase Busbar, 500V
  • RS Stock No. 256-000
  • Mfr. Part No. 267511 Z-GV-16/3P-3TE/6
Each
$23.00(exc. GST)
Temporarily out of stock
ABB 10A Tag Fuse, 125 x 30 x 60mm, 500V
  • RS Stock No. 251-3440
  • Mfr. Part No. 1SCA022627R1980
1 Box of 3
$81.69(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 260-9377
  • Mfr. Part No. C1047E040
Each
$8,741.44(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3387
  • Mfr. Part No. 1SDA071310R1
Each
$117,344.93(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4010
  • Mfr. Part No. 1SDA072069R1
Each
$13,927.69(exc. GST)
Temporarily out of stock
Eaton Phase Busbar 3 Phase Busbar, 277V
  • RS Stock No. 231-738
  • Mfr. Part No. 121991 BB-UL-25/3P-3M/57
Each
$206.02(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-4113
  • Mfr. Part No. 1SDA072221R1
Each
$8,264.82(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-3147
  • Mfr. Part No. 1SDA071002R1
Each
$13,864.33(exc. GST)
Temporarily out of stock
ABB 80A Tag Fuse, 150 x 40 x 72mm, 500V
  • RS Stock No. 251-3473
  • Mfr. Part No. 1SCA022627R5200
1 Box of 3
$144.67(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-4290
  • Mfr. Part No. 1SDA072424R1
Each
$25,386.99(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3351
  • Mfr. Part No. 1SDA071267R1
Each
$75,157.31(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-3088
  • Mfr. Part No. 1SDA070941R1
Each
$12,749.23(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3291
  • Mfr. Part No. 1SDA071200R1
Each
$46,201.97(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3045
  • Mfr. Part No. 1SDA070900R1
Each
$20,926.62(exc. GST)
Temporarily out of stock
Legrand MPX³ Enclosure for use with Motor Circuit Breaker
  • RS Stock No. 266-1393
  • Mfr. Part No. 417481
Each
$124.04(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 2.5kA , Fixed
  • RS Stock No. 132-934
  • Mfr. Part No. 183899 IZMX40B4-V25F-1
Each
$44,152.85(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9416
  • Mfr. Part No. 3VA1180-3GF46-0AA0
Each
$1,231.43(exc. GST)
In Stock
Bourns Surface Mount Fuse 1A, 65V dc
  • RS Stock No. 245-9242P
  • Mfr. Part No. SF-1206SA100M-2
Each (Supplied on a Reel)
$1.406(exc. GST)
Temporarily out of stock
Phoenix Contact 15A Blue Automotive Car Fuse, 32V No
  • RS Stock No. 253-7600
  • Mfr. Part No. 2908360
Each (In a Pack of 2)
$27.40(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250 Circuit Breakers
  • RS Stock No. 260-7835
  • Mfr. Part No. C253MA220
Each
$1,348.05(exc. GST)
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