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

99 of 999+
Better World
ABB System Pro M Compact S200M MCB, 2P, 40A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 131-905
  • Mfr. Part No. 2CDS272001R0404 S202M-C40
Each
$154.24(exc. GST)
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 3A Curve K, 15 kA Breaking Capacity
  • RS Stock No. 219-9295
  • Mfr. Part No. A9F95203
Each
$601.07(exc. GST)
Eaton, xEnergy MCCB 1P 250A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 537-5551
  • Mfr. Part No. 259094 NZMN2-A250
Each
$2,192.85(exc. GST)
Phoenix Contact CB Electronic Circuit breaker 4A 24V CB E1, On Base Element
  • RS Stock No. 217-6384
  • Mfr. Part No. 2800904
Each
$117.67(exc. GST)
Eaton Rear Support for use with N1, NS1, NZM1, PN1
  • RS Stock No. 231-523
  • Mfr. Part No. 107245 NZM1-XRAV
Each
$466.20(exc. GST)
Better World
Siemens SIRIUS Electronic Circuit Breaker 59A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 159-693
  • Mfr. Part No. 3RV2431-4XA10
Each
$1,044.46(exc. GST)
Schneider Electric Easy9 1+N Phase Busbar, 230V ac, 9 mm, 18 mm Pitch
  • RS Stock No. 654-221
  • Mfr. Part No. SEPNB112
Each
$142.19(exc. GST)
ABB Emax2 Electronic Circuit Breaker 250A Ekip Touch LI, 4 channels
  • RS Stock No. 259-3391
  • Mfr. Part No. 1SDA071324R1
Each
$13,392.07(exc. GST)
Schneider Electric MasterPact Adapter Kit for use with MTZ1
  • RS Stock No. 212-188
  • Mfr. Part No. LV833769SP
Each
$213.29(exc. GST)
Hager MJT MCB, 2P, 10A Curve C, 240 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4949
  • Mfr. Part No. MJT710
Each
$66.48(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 1P, 63A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7554
  • Mfr. Part No. 2CDS251001R0635 S201-B63
Each
$39.86(exc. GST)
Eaton NZM Handle for use with NS2…-NA, NZM2…-NA
  • RS Stock No. 120-806
  • Mfr. Part No. 155484 NZM2-XSH-12-120-NA
Each
$2,420.51(exc. GST)
Eaton Electronic Circuit breaker
  • RS Stock No. 774-0178
  • Mfr. Part No. 121727 PKE-XTUA-1,2
Each
$478.78(exc. GST)
Siemens ALPHA Assembly Kit for use with 3VL Molded Case Circuit Breakers
  • RS Stock No. 629-286
  • Mfr. Part No. 8GK4720-5KK10
Each
$444.64(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-660
  • Mfr. Part No. 3VA6110-7HM31-2AA0
Each
$3,610.34(exc. GST)
Schneider Electric, Compact MCCB 4P 630A, Breaking Capacity 75 kA
  • RS Stock No. 340-919
  • Mfr. Part No. C063B4WM
Each
$10,920.01(exc. GST)
ABB Emax2 Electronic Circuit Breaker 250A Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-3988
  • Mfr. Part No. 1SDA072049R1
Each
$19,169.77(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - IUGN66 2 Pole Panel Mount, 2.5A Current Rating
  • RS Stock No. 275-0295
  • Mfr. Part No. IUGN66-1-72-2.50
Each
$337.46(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 268-656
  • Mfr. Part No. 3VA6110-6KP41-2AA0
Each
$5,964.92(exc. GST)
Schneider Electric Flexible Elbow Busbar Trunking, 1.2m, 400A, Canalis Series
  • RS Stock No. 354-347
  • Mfr. Part No. KSA400DLE42F
Each
$3,962.67(exc. GST)
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