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

30 of 999+
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 269-7211
  • Mfr. Part No. 3VA9503-0JG23
Each (In a Pack of 3)
TWD4,216.00(exc. GST)
Temporarily out of stock
Eaton xPole - PXL PXL MCB, 3P, 63A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 254-132
  • Mfr. Part No. 236406 PXL-B63/3
Each
TWD7,280.00(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 207-2735
  • Mfr. Part No. 2906809
Each
TWD4,331.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3+N, 13A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 256-965
  • Mfr. Part No. 278973 FAZ-C13/3N
Each
TWD7,548.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-3928
  • Mfr. Part No. 3VA2110-0HN36-0AA0
Each
TWD55,011.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Motor Operator for use with MCCB
  • RS Stock No. 231-9361
  • Mfr. Part No. 1SDA104885R1 MOE XT5 220...250V AC/DC
Each
TWD39,080.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3902
  • Mfr. Part No. 3VA2063-8JP42-0AA0
Each
TWD76,605.00(exc. GST)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 250-4177
  • Mfr. Part No. 1SDA054449R1
Each
TWD182,465.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4750
  • Mfr. Part No. 3VA2163-7JP42-0AA0
Each
TWD69,271.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9673
  • Mfr. Part No. 3VA11105FE460AA0
Each
TWD27,361.00(exc. GST)
Temporarily out of stock
Hager Hager NKN Circuit Breaker, 4P, 63A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-808
  • Mfr. Part No. NKN463
Each
TWD18,985.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4559
  • Mfr. Part No. 3VA2125-7HM46-0AA0
Each
TWD59,338.00(exc. GST)
Last RS stock
ABB S203L MCB, 3P, 20A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 201-393
  • Mfr. Part No. 2CDS243701R0204
Each
TWD5,345.00(exc. GST)
In Stock
Siemens Screw Lead Sealing for use with Cable Gland
  • RS Stock No. 203-2514
  • Mfr. Part No. 3RK1901-1MD00
Each (In a Pack of 10)
TWD132.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3783
  • Mfr. Part No. 3VA2125-6HL36-0AA0
Each
TWD33,921.00(exc. GST)
In Stock
Better World
Siemens SENTRON 5SY5 MCB, 2P, 25A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 212-8890
  • Mfr. Part No. 5SY5225-7
Each
TWD7,512.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Terminal for use with 3VA1 400/630 3VA2 400/630
  • RS Stock No. 226-2831
  • Mfr. Part No. 3VA9401-0QF10
Each
TWD2,074.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 6A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3385
  • Mfr. Part No. A9F54306
Each
TWD4,147.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Cover Frame for use with 3VA20/21/22
  • RS Stock No. 161-957
  • Mfr. Part No. 3VA9164-0SB20
Each
TWD2,200.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-730
  • Mfr. Part No. 3VA6210-7KP41-2AA0
Each
TWD183,335.00(exc. GST)
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