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

281 of 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-3691
  • Mfr. Part No. 1SDA071665R1
Each
$20,629.26(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-3062
  • Mfr. Part No. 1SDA070918R1
Each
$20,629.26(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3478
  • Mfr. Part No. 1SDA071433R1
Each
$15,649.57(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3701
  • Mfr. Part No. 1SDA071677R1
Each
$30,442.06(exc. GST)
Temporarily out of stock
Eaton Electronic Circuit breaker
  • RS Stock No. 774-0178
  • Mfr. Part No. 121727 PKE-XTUA-1,2
Each
$478.78(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-683
  • Mfr. Part No. 3VA6225-8JP41-0AA0
Each
$9,485.55(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3803
  • Mfr. Part No. 1SDA071808R1
Each
$56,423.69(exc. GST)
Temporarily out of stock
Eaton PC Board Non Resettable Fuse, Radial 800mA, 250V ac
  • RS Stock No. 169-9538
  • Mfr. Part No. SS-5-800MA-BK
Each (In a Bag of 200)
$2.435(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3455
  • Mfr. Part No. 1SDA071397R1
Each
$21,848.21(exc. GST)
Temporarily out of stock
Eaton 32A Slow-Blow Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 229-001
  • Mfr. Part No. C22M32S CYL FUSE STR 22x58mm 32A GG 690V AC
1 Pack of 10
$237.78(exc. GST)
In Stock
Eaton 6.3A PCB Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V
  • RS Stock No. 311-0021
  • Mfr. Part No. HTC-50M
Each (In a Pack of 5)
$26.264(exc. GST)
In Stock
Weidmuller Single Phase Surge Protector, 16A, DIN Rail Mount
  • RS Stock No. 249-3333
  • Mfr. Part No. 1351580000
Each
$247.23(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-3238
  • Mfr. Part No. 1SDA071126R1
Each
$32,003.17(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-3292
  • Mfr. Part No. 1SDA071201R1
Each
$41,592.99(exc. GST)
Temporarily out of stock
Eaton NZMH3 Electronic Circuit Breaker 400A 70V NZM, 3 channels , Fixed
  • RS Stock No. 120-676
  • Mfr. Part No. 168918 NZMH3-S400-SVE
Each
$6,493.61(exc. GST)
Temporarily out of stock
Siemens 8GK Support for use with ALPHA Distribution Board
  • RS Stock No. 229-9889
  • Mfr. Part No. 8GK9910-0KK05
Each (In a Pack of 20)
$8.491(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3533
  • Mfr. Part No. 1SDA071510R1
Each
$23,149.12(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 3 channels
  • RS Stock No. 259-3213
  • Mfr. Part No. 1SDA071082R1
Each
$25,163.94(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 2P 110A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 432-691
  • Mfr. Part No. BJL26110LU
Each
$2,623.91(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A , Fixed
  • RS Stock No. 132-919
  • Mfr. Part No. 183810 IZMX40B4-P08F-1
Each
$27,635.97(exc. GST)
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