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

1688 of 999+
Temporarily out of stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 1P, 25A Curve D, 277V AC
  • RS Stock No. 256-6787
  • Mfr. Part No. M9F43125
Each
TWD4,182.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SP3250 MCB, 2P, 50A, Type E
  • RS Stock No. 231-8310
  • Mfr. Part No. 5SP3250-3
Each
TWD11,705.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 4P, 15A Curve D, 415V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 255-790
  • Mfr. Part No. 240992 FAZT-D15/4
Each
TWD10,958.00(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-209
  • Mfr. Part No. 3VA6610-7JQ32-0AA0
Each
TWD398,471.00(exc. GST)
In Stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)1(-4), NZM1(-4), PN1(-4)
  • RS Stock No. 256-774
  • Mfr. Part No. 271504 NZM1-XTVD-60
Each
TWD3,330.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with ALPHA DIN Installation Distributor
  • RS Stock No. 272-0349
  • Mfr. Part No. 8GK4500-1KK22
Each
TWD11,853.00(exc. GST)
Currently unavailable
RS PRO Thermal Circuit Breaker -, 13A Current Rating
  • RS Stock No. 774-0036
Each
TWD320.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 80A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 253-786
  • Mfr. Part No. 269198 NZMH2-AF80-NA
Each
TWD26,054.00(exc. GST)
In Stock
ABB System Pro M Compact S200M MCB, 3P, 20A Curve C, 440V AC, 10 kA Breaking Capacity
  • RS Stock No. 535-4295
  • Mfr. Part No. 2CDS273001R0204 S203M-C20
Each
TWD2,945.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 1.6kA, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 253-621
  • Mfr. Part No. 265984 NZMN4-4-VE1600
Each
TWD465,291.00(exc. GST)
In Stock
Schneider Electric Acti9 iID RCCB, 100A, 4 Pole, 100mA, Type AC, 380 → 415V ac
  • RS Stock No. 130-796
  • Mfr. Part No. A9R12491
Each
TWD46,095.00(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 600mA Current Rating
  • RS Stock No. 135-515
  • Mfr. Part No. 0914950
1 Pack of 3
TWD16,636.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 4A Curve D, 400V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9658
  • Mfr. Part No. A9F75204
Each
TWD4,609.00(exc. GST)
Temporarily out of stock
Eaton NZMH2 Electronic Circuit Breaker 100A NZM, 3 channels , Fixed
  • RS Stock No. 120-934
  • Mfr. Part No. 158530 NZMH2-A100-FIA30
Each
TWD184,194.00(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-130
  • Mfr. Part No. 3VA6610-6HL32-0AA0
Each
TWD264,753.00(exc. GST)
Temporarily out of stock
Eaton Circuit Breaker - NZM..-ME..NA 3 Pole 690V ac Voltage Rating, 140A Current Rating
  • RS Stock No. 250-9756
  • Mfr. Part No. 142422 NZMN2-ME140-BT-NA
Each
TWD71,414.00(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX100/160
  • RS Stock No. 260-9355
  • Mfr. Part No. C103MG063
Each
TWD2,251.00(exc. GST)
In Stock
Phoenix Contact TRABTECH Thermal Circuit Breaker - CB TM1 2A F1 P Single Pole, 2A Current Rating
  • RS Stock No. 768-0921
  • Mfr. Part No. 2800859
Each
TWD1,542.00(exc. GST)
Temporarily out of stock
Better World
ABB, XT4L MCCB 3P 63A, Fixed Mount
  • RS Stock No. 236-6808
  • Mfr. Part No. 1SDA068552R1 XT4L 160 Ekip LS/I 63A FF
Each
TWD38,528.00(exc. GST)
In Stock
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9181
  • Mfr. Part No. A9E18033
Each
TWD880.00(exc. GST)
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