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

23542 Products showing for Circuit Breakers

1037 of 999+
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 2P, 1A Curve D, 230V AC, 60V DC, 70 kA Breaking Capacity
  • RS Stock No. 610-623
  • Mfr. Part No. 5SY8501-8
Each
$263.03(exc. GST)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA52 250
  • RS Stock No. 269-7147
  • Mfr. Part No. 3VA9233-0JK11
Each (In a Pack of 3)
$687.527(exc. GST)
Temporarily out of stock
xEnergy Basic Distribution Board Enclosure
  • RS Stock No. 252-733
  • Mfr. Part No. 193184 BPM-O-600/14-P-EP-W
Each
$2,064.95(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Assembly Kit for use with N(S)3(-4), NZM3(-4), PN3(-4)
  • RS Stock No. 229-407
  • Mfr. Part No. 119000 NZM3-XHB-DA-NA
Each
$1,068.96(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 260-639
  • Mfr. Part No. 3VA6325-7KL31-2AA0
Each
$9,418.30(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-522
  • Mfr. Part No. 3VA5580-1MH36-0AA0
Each
$12,378.33(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 570A, Breaking Capacity 20 kA, Fixed Mount
  • RS Stock No. 341-521
  • Mfr. Part No. C63H47E570
Each
$31,892.28(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-235
  • Mfr. Part No. 3VA5340-6EF41-0AA0
Each
$10,732.81(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 630A , Fixed
  • RS Stock No. 127-500
  • Mfr. Part No. 183356 IZMX16B3-P06F-1
Each
$14,342.49(exc. GST)
Temporarily out of stock
Eaton xComfort KLV Installaton Accessory for use with Basic Device, Installation Distribution Boards, KLV For Projects
  • RS Stock No. 262-271
  • Mfr. Part No. 302468 KLV-F5UPP-4PR
Each
$588.65(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 13A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-7762
  • Mfr. Part No. 2CDS253001R0134 S203-C13
Each
$177.01(exc. GST)
Temporarily out of stock
Rockwell Automation FB100 Busbar, 1000V
  • RS Stock No. 281-5994
  • Mfr. Part No. FB100864Q1
Each (In a Pack of 2)
$263.10(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Enclosure for use with PKZM4
  • RS Stock No. 272-2299
  • Mfr. Part No. 225525 CI-K4-PKZ4-GR
Each
$181.71(exc. GST)
In Stock
Rockwell Automation FB100 Busbar, 1000V
  • RS Stock No. 281-5989
  • Mfr. Part No. FB100544Q1
Each (In a Pack of 2)
$168.575(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 25A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 339-338
  • Mfr. Part No. SEE125C03
Each
$340.00(exc. GST)
Temporarily out of stock
Eaton Circuit Trip Circuit Trip for use with IZMX…
  • RS Stock No. 132-429
  • Mfr. Part No. 183985 IZMX-PXRP-TA-1
Each
$12,847.49(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3802
  • Mfr. Part No. 3VA2325-5KP42-0AA0
Each
$5,894.49(exc. GST)
In Stock
Better World
Schneider Electric Terminal Extention for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1149
  • Mfr. Part No. LV429224
Each
$144.16(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0273
  • Mfr. Part No. 8GK1051-4KK40
Each
$4,060.35(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9664
  • Mfr. Part No. 3VA11104GD460AA0
Each
$1,409.83(exc. GST)
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