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

35874 Products showing for Circuit Breakers

122 of 999+
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-376
  • Mfr. Part No. 113273 NZMN2-4-A250/160-SVE
Each
TWD75,135.00(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 16A Current Rating
  • RS Stock No. 344-5333
  • Mfr. Part No. 1658-G21-02-P10-16A
Each
TWD196.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 16A Curve B, 15 kA Breaking Capacity
  • RS Stock No. 219-9251
  • Mfr. Part No. A9F93216
Each
TWD7,247.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Feed Unit, Canalis KS Series
  • RS Stock No. 211-0477
  • Mfr. Part No. KSA630AE4
Each
TWD32,885.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7963
  • Mfr. Part No. C25R35E160
Each
TWD141,071.00(exc. GST)
In Stock
Better World
ABB Compact Home SH200 MCB, 1P, 25A Curve C
  • RS Stock No. 231-9653
  • Mfr. Part No. 2CDS211001R0254 SH201-C 25
1 Box of 1
TWD551.00(exc. GST)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 4P 320A, Fixed Mount
  • RS Stock No. 250-4257
  • Mfr. Part No. 1SDA054598R1
Each
TWD41,582.00(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 14A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-072
  • Mfr. Part No. 3RV2431-4SA10
Each
TWD8,576.00(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 3A Curve B, 277V AC
  • RS Stock No. 256-6752
  • Mfr. Part No. M9F21203
Each
TWD10,905.00(exc. GST)
In Stock
Siemens 20 → 24V ac Shunt Trip Shunt trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1948
  • Mfr. Part No. 3RV2902-1DB0
Each
TWD2,795.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 2A Curve C, 440V AC, 220 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3411
  • Mfr. Part No. A9F54402
Each
TWD7,970.00(exc. GST)
In Stock
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9175
  • Mfr. Part No. A9E18030
Each
TWD733.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Interlock for use with MO320 250 3VA9277-0HA.0
  • RS Stock No. 161-945
  • Mfr. Part No. 3VA9237-0SB30
Each
TWD1,981.00(exc. GST)
Temporarily out of stock
ABB S804S MCB, 4P, 8A Curve B, 690V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-193
  • Mfr. Part No. 2CCS864001R0085
Each
TWD30,765.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 90A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-751
  • Mfr. Part No. 3VA5190-6GD41-0AA0
Each
TWD25,999.00(exc. GST)
In Stock
Phoenix Contact Electronic Circuit Breaker 10A 24V CBM, DIN Rail Mount Type E
  • RS Stock No. 890-3806
  • Mfr. Part No. 2905744
Each
TWD11,991.00(exc. GST)
In Stock
Europa EUC1P EUC MCB, 1P, 20A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6516
  • Mfr. Part No. EUC1P20C
Each
TWD404.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A 1SDA07, 4 channels
  • RS Stock No. 259-4495
  • Mfr. Part No. 1SDA072707R1
Each
TWD395,186.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5063
  • Mfr. Part No. 3VA1196-5EF36-0AA0
Each
TWD17,861.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4672
  • Mfr. Part No. 3VA2140-7KQ32-0AA0
Each
TWD82,434.00(exc. GST)
1
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