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

249 of 999+
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - CB TM2 2 Pole 80V dc Voltage Rating, 5A Current Rating
  • RS Stock No. 217-6380
  • Mfr. Part No. 2800895
Each
TWD3,084.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-6875
  • Mfr. Part No. 1SDA100118R1 Ekip Hi-T LSI In=100A XT2
Each
TWD66,330.00(exc. GST)
In Stock
Eaton RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, PXK Range
  • RS Stock No. 183-3540
  • Mfr. Part No. 236948 PXK-B16/1N/003-A
Each
TWD2,428.00(exc. GST)
In Stock
Eaton xPole MCB, 1+N, 6A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 230-1084
  • Mfr. Part No. 264743 PLG4-C6/1N
Each
TWD563.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 3P, 32A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9286
  • Mfr. Part No. A9F94332
Each
TWD9,160.00(exc. GST)
Temporarily out of stock
Eaton, Moeller Series NZM MCCB Molded Case Circuit Breaker 3P
  • RS Stock No. 255-158
  • Mfr. Part No. 259834 NZM2-XR380-440AC
Each
TWD40,920.00(exc. GST)
Temporarily out of stock
Eaton MCB, 1P, 10A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 247-100
  • Mfr. Part No. 101256 PLI-C10/1
Each
TWD1,172.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1.6kA, Breaking Capacity 42 kA, Fixed Mount
  • RS Stock No. 347-099
  • Mfr. Part No. C160H320FM
Each
TWD527,256.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 10A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3389
  • Mfr. Part No. A9F76210
Each
TWD4,319.00(exc. GST)
Temporarily out of stock
Eaton xEffect - FRCmM RCCB, 63A, 4 Pole, 100mA, 240/415V ac
  • RS Stock No. 123-616
  • Mfr. Part No. 170445 FRCMM-63/4/01-S/A
Each
TWD19,244.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9698
  • Mfr. Part No. 3VA11123FD460AA0
Each
TWD34,333.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-4101
  • Mfr. Part No. 1SDA072197R1
Each
TWD375,836.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3872
  • Mfr. Part No. 3VA2063-7JP42-0AA0
Each
TWD152,583.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Tap-Off Unit with Fuse Isolator, Canalis KS Series
  • RS Stock No. 211-0502
  • Mfr. Part No. KSB250SE5
Each
TWD47,080.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 220A, Breaking Capacity 20 kA, Fixed Mount
  • RS Stock No. 254-524
  • Mfr. Part No. 265797 NZML3-ME220
Each
TWD110,537.00(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 25A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 245-084
  • Mfr. Part No. A9D05825
Each
TWD7,505.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SL4 MCB, 2P, 4A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 196-3589
  • Mfr. Part No. 5SL4204-8
Each
TWD3,939.00(exc. GST)
Currently unavailable
Altech Thermal Circuit Breaker - V-EA 2 Pole 277V Voltage Rating DIN Rail Mount, 1.6A Current Rating
  • RS Stock No. 899-1746
  • Mfr. Part No. 2E1.6UM
Each
TWD1,059.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 70A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-582
  • Mfr. Part No. 3VA5270-7ED41-0AA0
Each
TWD53,257.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1703
  • Mfr. Part No. 3VA2040-5HN32-0AA0
Each
TWD27,717.00(exc. GST)
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