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

164 of 999+
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 40A Curve B, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-895
  • Mfr. Part No. 132768 FAZ-B40/2-RT
Each
TWD5,441.00(exc. GST)
Temporarily out of stock
ABB S800S MCB, 3P, 13A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-655
  • Mfr. Part No. 2CCS863001R0447
Each
TWD28,296.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 63A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-958
  • Mfr. Part No. 2CDS273061R0607
Each
TWD26,084.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 1+N, 13A Curve D, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-135
  • Mfr. Part No. 2CDS271103R0131
Each
TWD4,905.00(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with PXR20(25) NZM2(-4), PXR20(25) NZM3(-4)
  • RS Stock No. 246-807
  • Mfr. Part No. 189724 NZM2/3-XU2A24AC
Each
TWD7,586.00(exc. GST)
In Stock
Schneider Electric Acti9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 211-965
  • Mfr. Part No. A9XPH309
Each
TWD607.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 32A, Breaking Capacity 25 kA
  • RS Stock No. 209-6793
  • Mfr. Part No. 3VA1132-3EE42-0AA0
Each
TWD17,821.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 40A Curve C, 230V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-381
  • Mfr. Part No. 5SL6040-7
Each
TWD3,594.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SP3716 MCB, 1P, 16A, Type E
  • RS Stock No. 231-8329
  • Mfr. Part No. 5SP3716-2KK02
Each
TWD4,295.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY6 MCB, 2P, 30A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-378
  • Mfr. Part No. 5SY6230-7
Each
TWD3,661.00(exc. GST)
Temporarily out of stock
ABB S800U MCB, 3P, 90A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-772
  • Mfr. Part No. 2CCS863017R0905
Each
TWD40,418.00(exc. GST)
Temporarily out of stock
Hager NQN MCB, 4P, 50A Curve B, 415V AC, 15 kA Breaking Capacity
  • RS Stock No. 597-940
  • Mfr. Part No. NQN450
Each
TWD20,722.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 225A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-797
  • Mfr. Part No. 3VA5222-5ED41-0AA0
Each
TWD73,119.00(exc. GST)
Temporarily out of stock
Schneider Electric Multi 9 Multi9 MCB, 3P, 63A, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 119-431
  • Mfr. Part No. M9F52363
Each
TWD18,724.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 3+N, 63A, Type Z, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-802
  • Mfr. Part No. 2CDS273103R0608
Each
TWD25,570.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 3 channels
  • RS Stock No. 259-3357
  • Mfr. Part No. 1SDA071272R1
Each
TWD1,635,350.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SL64 MCB, 4P, 25A Curve B, 440V AC, 62.5V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-300
  • Mfr. Part No. 5SL6425-6
Each
TWD4,521.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 253-792
  • Mfr. Part No. 269215 NZMB2-A160-NA
Each
TWD44,330.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 350A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-375
  • Mfr. Part No. 3VA5335-5EC61-0AA0
Each
TWD60,537.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 4P, 50A Curve D, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-555
  • Mfr. Part No. 5SY7650-8
Each
TWD15,887.00(exc. GST)
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