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

241 of 999+
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - TCP Single Pole 32V dc Voltage Rating On Base Element, 30A Current Rating
  • RS Stock No. 558-698
  • Mfr. Part No. 1499987
1 Pack of 100
TWD30,040.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 3+N, 6A Curve C, 400V AC
  • RS Stock No. 238-3368
  • Mfr. Part No. A9P22706
Each
TWD7,132.00(exc. GST)
In Stock
Socomec SIRCO Phase Barrier for use with SIRCOVER Transfer Switches
  • RS Stock No. 252-3484
  • Mfr. Part No. 29980013
Each
TWD1,008.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 220A, Fixed Mount
  • RS Stock No. 260-8010
  • Mfr. Part No. C25V3MA220
Each
TWD101,438.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 4 channels
  • RS Stock No. 259-3562
  • Mfr. Part No. 1SDA071540R1
Each
TWD488,004.00(exc. GST)
Temporarily out of stock
Eaton xPole - PXL PXL MCB, 1P, 1A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 256-261
  • Mfr. Part No. 236105 PXL-B1/1N
Each
TWD2,000.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with 3VA2 100/160/250
  • RS Stock No. 269-7172
  • Mfr. Part No. 3VA9264-0QD00
Each (In a Pack of 4)
TWD752.30(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0286
  • Mfr. Part No. 8GK1061-4KK10
Each
TWD23,744.00(exc. GST)
Temporarily out of stock
ABB S801S MCB, 1P, 63A, UC-B, 250V DC, 50 kA Breaking Capacity
  • RS Stock No. 141-127
  • Mfr. Part No. 2CCS861001R1635
Each
TWD13,434.00(exc. GST)
Temporarily out of stock
Eaton IZMX16N4-P12F-1 Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 127-722
  • Mfr. Part No. 183406 IZMX16N4-P12F-1
Each
TWD401,009.00(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 600A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 428-712
  • Mfr. Part No. NLLL36600U53X
Each
TWD807,783.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-7441
  • Mfr. Part No. C10R4TM100
Each
TWD58,446.00(exc. GST)
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 256-075
  • Mfr. Part No. 265850 NZMB2-4-A160/100
Each
TWD46,475.00(exc. GST)
Temporarily out of stock
Phoenix Contact 2 Phase Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 201-6268
  • Mfr. Part No. 1065317
Each
TWD5,229.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-330
  • Mfr. Part No. 3VA6140-7KP41-0AA0
Each
TWD90,805.00(exc. GST)
Temporarily out of stock
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT 4 Pole 690V Voltage Rating Clip-On, 100A
  • RS Stock No. 357-332
  • Mfr. Part No. BJL46100LU
Each
TWD66,779.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 2P, 25A Curve D, 400V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 610-538
  • Mfr. Part No. 5SY7225-8
Each
TWD4,979.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 4 channels
  • RS Stock No. 259-3738
  • Mfr. Part No. 1SDA071713R1
Each
TWD627,535.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 3 channels
  • RS Stock No. 259-3178
  • Mfr. Part No. 1SDA071042R1
Each
TWD362,206.00(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 5 Way
  • RS Stock No. 256-889
  • Mfr. Part No. 281696 BC-U-1/5-TW-ECO
Each
TWD943.00(exc. GST)
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