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

172 of 999+
ABB System Pro M Compact S300P MCB, 3+N, 3A Curve K, 415V AC, 100 kA Breaking Capacity
  • RS Stock No. 200-343
  • Mfr. Part No. 2CDS383103R0317
Each
TWD23,512.00(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 150A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 268-609
  • Mfr. Part No. 3VA6115-6JP41-2AA0
Each
TWD116,093.00(exc. GST)
Eaton MCB, 1+N, 20A Curve C
  • RS Stock No. 230-1078
  • Mfr. Part No. 264747 PLG4-C20/1N
Each
TWD468.00(exc. GST)
ABB MCCB Molded Case Circuit Breaker 4P 80A, Fixed Mount
  • RS Stock No. 250-4209
  • Mfr. Part No. 1SDA054499R1
Each
TWD105,169.00(exc. GST)
Hager Thermal Circuit Breaker - HAD 2P Pole Fixed, 60A Current Rating
  • RS Stock No. 602-097
  • Mfr. Part No. HDA260F
Each
TWD7,876.00(exc. GST)
Better World
Schneider Electric Acti 9 Acti9 iDT40N MCB, 1P, 2A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 191-6118
  • Mfr. Part No. A9P34602
Each
TWD3,947.00(exc. GST)
Schneider Electric Feed Unit, KSC25 Series
  • RS Stock No. 207-237
  • Mfr. Part No. KSC250AB4
Each
TWD44,076.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 254-034
  • Mfr. Part No. 269193 NZMH2-AF40-NA
Each
TWD24,253.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 258-389
  • Mfr. Part No. 269337 NZMH3-VE600-NA
Each
TWD162,913.00(exc. GST)
Better World
Siemens SENTRON 5SL6 MCB, 2P, 16A Curve C, 400V AC, 72V DC
  • RS Stock No. 212-8870
  • Mfr. Part No. 5SL6216-7
Each
TWD2,553.00(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 800A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-555
  • Mfr. Part No. 3VA5580-0BB62-0AA0
Each
TWD143,296.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-395
  • Mfr. Part No. 113391 NZMH2-4-VE160/100-SVE
Each
TWD81,801.00(exc. GST)
Better World
Schneider Electric Surge Protector, 20kA, DIN Rail Mount
  • RS Stock No. 776-3834
  • Mfr. Part No. A9L16618
Each
TWD18,286.00(exc. GST)
Eaton NZM3 Electronic Circuit Breaker 320A NZM, 3 channels , Fixed
  • RS Stock No. 121-335
  • Mfr. Part No. 168490 NZMN3-S320-SVE
Each
TWD92,610.00(exc. GST)
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 7.5 kA, Fixed Mount
  • RS Stock No. 256-071
  • Mfr. Part No. 265811 NZMN1-4-A40
Each
TWD21,341.00(exc. GST)
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 3 channels
  • RS Stock No. 259-4279
  • Mfr. Part No. 1SDA072408R1
Each
TWD529,213.00(exc. GST)
ABB System Pro M Compact S200M MCB, 4P, 63A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-258
  • Mfr. Part No. 2CDS274001R0607
Each
TWD29,336.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-306
  • Mfr. Part No. 3VA6440-6KQ31-2AA0
Each
TWD209,963.00(exc. GST)
Siemens Alpha Assembly Kit for use with Fuse Switch Disconnector
  • RS Stock No. 212-9064
  • Mfr. Part No. 8GK4653-3KK12
Each
TWD4,932.00(exc. GST)
Eaton xEffect FAZ MCB, 1+N, 1A Curve B, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 254-182
  • Mfr. Part No. 240994 FAZT-B1/1N
Each
TWD2,927.00(exc. GST)
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