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

1016 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-865
  • Mfr. Part No. 3VA6115-7JP31-2AA0
Each
$5,987.34(exc. GST)
Temporarily out of stock
Eaton xEnergy Main Distribution Board
  • RS Stock No. 257-967
  • Mfr. Part No. 284745 XPFCB02
Each
$334.36(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)4(-4), NZM4(-4)
  • RS Stock No. 253-757
  • Mfr. Part No. 266596 NZM4-XUVHIV
Each
$756.99(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 268-448
  • Mfr. Part No. 3VA6110-8JT41-2AA0
Each
$6,839.48(exc. GST)
Temporarily out of stock
Eaton xEnergy Basic Distribution Board Enclosure
  • RS Stock No. 251-173
  • Mfr. Part No. 193648 BPM-O-350/8-P-EP-W
Each
$1,466.89(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Extension Box, 250 A
  • RS Stock No. 339-296
  • Mfr. Part No. MGEX250C
Each
$461.77(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 63A Curve D, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7885
  • Mfr. Part No. 2CDS252001R0631 S202-D63
Each
$119.39(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LEGH66 2 Pole Panel Mount, 5A Current Rating
  • RS Stock No. 275-0354
  • Mfr. Part No. LEGH66-1-63-5.00-A-01-V
1 Box of 5
$1,323.28(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-4864
  • Mfr. Part No. 3VA1110-5EF42-0AA0
Each
$1,442.43(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250
  • RS Stock No. 260-7850
  • Mfr. Part No. C254TM200
Each
$2,947.53(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 265-521
  • Mfr. Part No. 3VW9011-0AL78
Each
$614.43(exc. GST)
Temporarily out of stock
Eaton NZM Insulation accessory for use with Circuit Breaker
  • RS Stock No. 259-824
  • Mfr. Part No. 284645 NZM3-XBR
Each
$97.71(exc. GST)
In Stock
Phoenix Contact 1 Phase Surge Protector, 40kA, 1500V (Volts), DIN Rail Mount
  • RS Stock No. 131-661
  • Mfr. Part No. 2910373
Each
$329.20(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 700A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 256-485
  • Mfr. Part No. 3VA5570-6EC62-0AA0
Each
$9,351.00(exc. GST)
Temporarily out of stock
Eaton IZMX40B3-P08F-1 Electronic Circuit Breaker 800A , Fixed
  • RS Stock No. 132-635
  • Mfr. Part No. 183574 IZMX40B3-P08F-1
Each
$22,277.45(exc. GST)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with 3VA1 Molded Case Circuit Breakers
  • RS Stock No. 629-343
  • Mfr. Part No. 8GK6735-6KK33
Each
$891.36(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-652
  • Mfr. Part No. 3VA6325-8KL31-0AA0
Each
$9,081.92(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 3m, 25A, KBA Series
  • RS Stock No. 219-8858
  • Mfr. Part No. KBB25ED2303W
Each
$384.75(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELHK111 3 Pole 480V ac Voltage Rating Panel Mount, 35A Current Rating
  • RS Stock No. 275-0245
  • Mfr. Part No. IELHK111-1-62F-35.0-ABE-01-V
Each
$546.04(exc. GST)
Temporarily out of stock
Eaton NZM Interlock for use with Circuit Breaker
  • RS Stock No. 255-177
  • Mfr. Part No. 260201 NZM2/3-XKAV
Each
$139.62(exc. GST)
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