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

35331 Products showing for Circuit Breakers

1648 of 999+
Temporarily out of stock
Siemens SENTRON Motor Operator for use with 3VA1 250
  • RS Stock No. 210-3529
  • Mfr. Part No. 3VA9257-0HA20
Each
TWD33,499.00(exc. GST)
In Stock
WAGO EPSITRON Electronic Circuit breaker 4A 30V 787-2861, 1 channels , DIN Rail Mount
  • RS Stock No. 177-6028
  • Mfr. Part No. 787-2861/400-000
Each
TWD3,064.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti9 1 Phase Busbar, 230 V, 400 V, 9mm Pitch
  • RS Stock No. 238-4086
  • Mfr. Part No. A9XPN748
Each (In a Pack of 6)
TWD4,405.30(exc. GST)
In Stock
Schneider Electric Resi9 R9F2 MCB, 1P, 13A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-139
  • Mfr. Part No. R9F23113
Each
TWD593.00(exc. GST)
Temporarily out of stock
ABB SMISSLINE TP MCB, 3P, 500mA Curve C, 415V AC
  • RS Stock No. 246-2660
  • Mfr. Part No. 2CCS573001R0984
Each
TWD7,451.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4816
  • Mfr. Part No. 3VA2563-6JP32-0AA0
Each
TWD301,041.00(exc. GST)
In Stock
ABB Surge Protector, DIN Rail Mount
  • RS Stock No. 136-3875
  • Mfr. Part No. 1SNA199412R1500
Each
TWD81.00(exc. GST)
Temporarily out of stock
Better World
Siemens RCBO, 13A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6133
  • Mfr. Part No. 5SU1324-6FA13
Each
TWD6,963.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 268-592
  • Mfr. Part No. 3VA6110-6KL41-2AA0
Each
TWD96,553.00(exc. GST)
Temporarily out of stock
ABB S800S MCB, 4P, 13A Curve C, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-733
  • Mfr. Part No. 2CCS864001R0134
Each
TWD34,159.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3702
  • Mfr. Part No. 3VA2025-8HM42-0AA0
Each
TWD62,948.00(exc. GST)
Currently unavailable
Osram Surge Protector, 15A, 10kV, Screw Mount Mount
  • RS Stock No. 251-5281
  • Mfr. Part No. SPD-10-275-G2
Each
TWD536.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0788
  • Mfr. Part No. 3WA9111-0AN23
Each
TWD9,270.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 6 kA, Fixed Mount
  • RS Stock No. 239-833
  • Mfr. Part No. 191649 NZMS2-VX250
Each
TWD66,935.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Link Module for use with 5SL4
  • RS Stock No. 209-6557
  • Mfr. Part No. 5SM2333-6
Each
TWD5,905.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3601
  • Mfr. Part No. 1SDA071577R1
Each
TWD486,557.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Retrofit Kit
  • RS Stock No. 277-0944
  • Mfr. Part No. 3WA9111-0EK81
1 Set
TWD20,287.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 259-335
  • Mfr. Part No. 269290 NZMH3-AEF600-NA
Each
TWD150,997.00(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 20A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 345-140
  • Mfr. Part No. NHGL36020
Each
TWD49,751.00(exc. GST)
In Stock
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6272
  • Mfr. Part No. C103MA100
Each
TWD6,562.00(exc. GST)
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