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

152 of 999+
Temporarily out of stock
Eaton NZM Electronic Circuit Breaker 250A NZM, 3 channels , Fixed
  • RS Stock No. 121-013
  • Mfr. Part No. 168453 NZMC3-S250-SVE
Each
$5,003.19(exc. GST)
In Stock
Schurter TA36 Rocker Circuit Breaker - TA36 Single Pole 32 V dc, 277 V ac Voltage Rating, 3A Current Rating
  • RS Stock No. 221-5590
  • Mfr. Part No. 3-128-201
Each
$26.43(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 50A, Fixed
  • RS Stock No. 122-508
  • Mfr. Part No. LV510564
Each
$543.00(exc. GST)
Temporarily out of stock
Schneider Electric PowerPact J Nut for use with Circuit Breaker
  • RS Stock No. 438-892
  • Mfr. Part No. S37429
1 Pack of 2
$167.44(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 63A 3VA2, 3 channels
  • RS Stock No. 157-296
  • Mfr. Part No. 3VA2163-5MN36-0AA0
Each
$1,802.89(exc. GST)
Temporarily out of stock
Hager BD RCCB, 63A, 2P Pole, 30mA, Type A-HI
  • RS Stock No. 602-049
  • Mfr. Part No. BD263
Each
$1,433.18(exc. GST)
Temporarily out of stock
Schneider Electric A9N RCCB, 125A, 2 Pole, 300mA, Type AC, 230 → 415V ac
  • RS Stock No. 653-962
  • Mfr. Part No. A9N18544
Each
$1,035.62(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 874-4391
  • Mfr. Part No. 3VA2140-5HL32-0AA0
Each
$1,067.62(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)2(-4), N(S)3(-4), NZM2(-4), NZM3(-4)
  • RS Stock No. 248-970
  • Mfr. Part No. 189750 NZM2/3-XU24AC-PI
Each
$373.78(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Series IZMX/INX Locking Device for use with INX40…, IZMX40…
  • RS Stock No. 239-877
  • Mfr. Part No. 184230 IZMX-PLPC40-M-OFF-1
Each
$322.08(exc. GST)
Temporarily out of stock
Eaton NZM Electronic Circuit Breaker 90A , 4 channels , Fixed
  • RS Stock No. 121-910
  • Mfr. Part No. 153383 NZMB2-4-AF90-BT-NA
Each
$2,592.17(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 269-882
  • Mfr. Part No. 3VA6110-5KL31-0AA0
Each
$3,812.16(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4367
  • Mfr. Part No. 3VA1196-4EF36-0AA0
Each
$951.18(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Control Unit for use with Compact NS630b to NS1600
  • RS Stock No. 341-524
  • Mfr. Part No. C6PFM
Each
$17,184.52(exc. GST)
Temporarily out of stock
Eaton xEnergy Safety Ci Distribution Board Enclosure, 1 Way, 630 A
  • RS Stock No. 251-880
  • Mfr. Part No. 194574 CI44-S60-630/3-1XNH00
Each
$1,229.10(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 300A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 256-510
  • Mfr. Part No. 3VA5330-5EF41-2AA0
Each
$8,222.94(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 256-527
  • Mfr. Part No. 3VA5320-5GF41-0AA0
Each
$6,678.08(exc. GST)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Moduler Installtion Devices
  • RS Stock No. 629-234
  • Mfr. Part No. 8GK4301-3KK11
Each
$219.19(exc. GST)
In Stock
Schneider Electric Auxiliary Contact for use with ComPact
  • RS Stock No. 276-8778
  • Mfr. Part No. LV429273
Each
$157.26(exc. GST)
In Stock
Schneider Electric Linergy Busbar
  • RS Stock No. 130-537
  • Mfr. Part No. LVS04536
Each
$2,139.17(exc. GST)
1
152
1190
Results per page

Related links