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

1651 of 999+
Temporarily out of stock
ABB S301 MCB, 1P, 16A Curve B, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-732
  • Mfr. Part No. 2CDS381001R0165
Each
TWD4,514.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Touch LSIG, 4 channels
  • RS Stock No. 259-3811
  • Mfr. Part No. 1SDA071826R1
Each
TWD926,121.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4817
  • Mfr. Part No. 3VA2563-6JP42-0AA0
Each
TWD370,321.00(exc. GST)
Temporarily out of stock
Eaton, xEnergy MCCB 1P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 537-5595
  • Mfr. Part No. 259125 NZMH2-VE100
Each
TWD29,662.00(exc. GST)
Temporarily out of stock
Socomec 1559 Power Supply Module for use with ATyS Transfer Switches
  • RS Stock No. 252-3422
  • Mfr. Part No. 15593012
Each
TWD4,138.00(exc. GST)
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 3P 20A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-5998
  • Mfr. Part No. 3VA1120-5EE32-0AA0
Each
TWD15,619.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3630
  • Mfr. Part No. 3VA2025-5HM36-0AA0
Each
TWD84,952.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact SU200 MR MCB, 4P, 16A Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-258
  • Mfr. Part No. 2CDS274347R0467
Each
TWD24,138.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 25A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 269-676
  • Mfr. Part No. 3VA5285-5ED31-2AA0
Each
TWD33,525.00(exc. GST)
Temporarily out of stock
ABB S803N MCB, 3P, 10A Curve B, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-400
  • Mfr. Part No. 2CCS893001R0105
Each
TWD20,314.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4012
  • Mfr. Part No. 3VA2110-7MS32-0AA0
Each
TWD27,939.00(exc. GST)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - IEGHS66 2 Pole Panel Mount, 40A Current Rating
  • RS Stock No. 275-0219
  • Mfr. Part No. IEGHS66-1REC4-53-40.0-A-01-V
Each
TWD3,632.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with 3VA2 Molded Case Circuit Breakers
  • RS Stock No. 628-847
  • Mfr. Part No. 8GK6720-2KK23
Each
TWD5,674.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Terminal Block
  • RS Stock No. 629-206
  • Mfr. Part No. 8GK4110-8KK12
Each
TWD11,202.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-4170
  • Mfr. Part No. 1SDA072285R1
Each
TWD257,377.00(exc. GST)
Temporarily out of stock
ABB S800S MCB, 3P, 16A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-575
  • Mfr. Part No. 2CCS863001R0161
Each
TWD26,380.00(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Series Undervoltage Release for use with Off-load Switch
  • RS Stock No. 247-752
  • Mfr. Part No. 157859 P-SOL-XUV(230V50/60HZ,240V50/60HZ)
Each
TWD3,330.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 630A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 240-915
  • Mfr. Part No. 191390 NZMH3-4-AX630/VAR
Each
TWD161,381.00(exc. GST)
In Stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX100/160/250
  • RS Stock No. 260-9393
  • Mfr. Part No. C104TM100
Each
TWD18,543.00(exc. GST)
Temporarily out of stock
Siemens Alpha Assembly Kit for use with Three And Four-Pole Circuit Breaker
  • RS Stock No. 216-4803
  • Mfr. Part No. 8GK4704-4KK13
Each
TWD8,498.00(exc. GST)
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