Circuit Breakers

Having an effective and well-designed circuit protection system in every building is vital. It not only protects machinery and equipment from costly damage or even worse an electrical fire, but good circuit protection also ensures people are safe too.

Here, at RS we stock an extensive range of high-quality products within our circuit breaker range. They include various types of protection devices as well as consumer units, distribution boards and accessories. Whether you are designing and building a new system or maintaining an old one we have everything you need, providing the perfect end-to-end solution.

What are the different types of circuit breakers?

RCBO Breakers

RCBO stands for Residual Current Circuit Breaker with Over Current protection. Installed in consumer units they protect from short circuits, overload current and residual current as they combine all the functions of an MCB and an RCCB.

RCCB Breakers

RCCB stands for Residual Current Circuit Breaker. They are designed to quickly disconnect any circuit as soon as current leaks to the earthing wire. RCCBs are also effective in protecting from electrocution or shock from direct contact.

MCB Breakers

MCB stands for Miniature Circuit Breaker. They are designed to protect an electric circuit from overcurrent only. They do not safeguard people from electric shock caused by earth leakage.

MCCB Breakers

MCCB stands for Moulded Case Circuit Breaker. They are another type of electrical protection device used in higher current rating applications where an MCB would not suffice. An MCCB protects against overload and short circuit faults. With its high breaking capacity and a wider range of current ratings, MCCBs are typically found in industrial systems rather than domestic systems.

Busbar Feed & Tap-Off Units
Busbar Feed & Tap-Off Units
Busbar Trunking
Busbar Trunking
Busbar Trunking Accessories
Busbar Trunking Accessories
Busbars
Busbars
Circuit Breaker Accessories
Circuit Breaker Accessories
Circuit Trips
Circuit Trips
Consumer Units
Consumer Units
Distribution Boards
Distribution Boards
Electronic Circuit Breakers
Electronic Circuit Breakers
Energy Monitoring Devices
Energy Monitoring Devices
MCBs
MCBs
MCCBs
MCCBs
RCBOs
RCBOs
RCCBs
RCCBs
Surge Protection Devices
Surge Protection Devices
Thermal Breakers
Thermal Breakers

23782 Products showing for Circuit Breakers

23 of 999+
In Stock
nVent ERICO Surge Protector, 50kA, 1500V ac, DIN Rail Mount
  • RS Stock No. 277-6231
  • Mfr. Part No. DT230040R
Each
$699.57(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 1P, 20A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9267
  • Mfr. Part No. A9F94120
Each
$194.73(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 C120N MCB, 1P, 125A Curve C, 415V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 230-6681
  • Mfr. Part No. A9N18359
Each
$122.15(exc. GST)
In Stock
Schneider Electric Easypact Cvs100...250, Nsx100...250 Dc DIN Rail Adapter for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1184
  • Mfr. Part No. LV429305
Each
$306.81(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 300A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 231-304
  • Mfr. Part No. 107519 NZMC2-A300
Each
$3,701.39(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 4 Way, 250 A
  • RS Stock No. 244-936
  • Mfr. Part No. SE12B250
Each
$786.79(exc. GST)
In Stock
Schneider Electric Resi9 Two Phase Distribution Board, 90 A
  • RS Stock No. 276-8949
  • Mfr. Part No. R9H13402
Each
$124.58(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-838
  • Mfr. Part No. A9D73616
Each
$662.19(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 3 Phase Distribution Board, 72 Way, 250 A
  • RS Stock No. 230-6844
  • Mfr. Part No. SAU25072183
Each
$704.94(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 63A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3222
  • Mfr. Part No. A9N61539
Each
$178.74(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Compact NSX, Easy Pact CVS, FuPact INFB Crimp Lug for use with For copper cable 300 mm2
  • RS Stock No. 219-9402
  • Mfr. Part No. LV432503
Each
$762.87(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Series NZM Adapter for use with N3, NZM3, PN3
  • RS Stock No. 235-217
  • Mfr. Part No. 107206 NZM3-XAD630
Each
$677.05(exc. GST)
Temporarily out of stock
Better World
Schneider Electric
  • RS Stock No. 125-1383
  • Mfr. Part No. A9C70122
Each
$740.06(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 2A Curve B, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-308
  • Mfr. Part No. 5SY4202-6
Each
$166.35(exc. GST)
In Stock
Schneider Electric Acti9 Active iDT40 AFDD, 25A, 1+N Pole
  • RS Stock No. 238-3485
  • Mfr. Part No. A9TYAE625
Each
$1,807.53(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 3P, 16A Curve C, 400V AC
  • RS Stock No. 239-9969
  • Mfr. Part No. A9P22316
Each
$282.11(exc. GST)
Temporarily out of stock
Lovato 1 Phase Surge Protector, 100kA
  • RS Stock No. 216-8288
  • Mfr. Part No. SA1B1NA320R
Each
$1,536.19(exc. GST)
Temporarily out of stock
Resi9 Busbar, 230V ac, 18mm Pitch
  • RS Stock No. 585-434
  • Mfr. Part No. R9EXHS10
Each
$18.80(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 50A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-440
  • Mfr. Part No. 3VA5150-6ED11-1AA0
Each
$962.56(exc. GST)
In Stock
Eaton Handle, Lockable for use with N(S)2(-4) Series, NZM2(-4) Switch, PN2(-4) Series
  • RS Stock No. 537-5719
  • Mfr. Part No. 260174 NZM2-XTVDV
Each
$348.98(exc. GST)
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