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

76 of 999+
Temporarily out of stock
Siemens 1 Phase Surge Protector, 25kA, DIN Rail Mount
  • RS Stock No. 213-1321
  • Mfr. Part No. 5SD7424-0
Each
TWD15,758.00(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 50A, Type Z
  • RS Stock No. 237-3330
  • Mfr. Part No. 2CDS254001R0578 S204 Z 50A - 10 KA
Each
TWD11,083.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 32A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 258-264
  • Mfr. Part No. 279131 FAZ-C32/1-DC
Each
TWD5,326.00(exc. GST)
In Stock
ETA for use with Terminal Block
  • RS Stock No. 729-2877
  • Mfr. Part No. 17-P10-Si
Each
TWD919.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-4374
  • Mfr. Part No. 1SDA072554R1
Each
TWD921,783.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3904
  • Mfr. Part No. 3VA2063-8JP46-0AA0
Each
TWD78,157.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA2, 4 channels
  • RS Stock No. 156-806
  • Mfr. Part No. 3VA2440-5HM42-0AA0
Each
TWD149,358.00(exc. GST)
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 350A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 247-359
  • Mfr. Part No. 168484 NZMN3-ME350-SVE
Each
TWD97,434.00(exc. GST)
In Stock
Okaya Electric Industries 1 Phase Surge Protector, 5kA, Surface Mount Mount
  • RS Stock No. 190-2015
  • Mfr. Part No. LV275DI-Q4
Each
TWD1,195.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7992
  • Mfr. Part No. C25S3
Each
TWD70,118.00(exc. GST)
In Stock
Schneider Electric Acti9 iC60 RCCB, 16A, 4 Pole, 300mA, Type C, 380 → 415V ac
  • RS Stock No. 110-282
  • Mfr. Part No. A9D55416
Each
TWD37,196.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Cover for use with 3VA1 400/630 and 3VA2 400/630
  • RS Stock No. 210-9376
  • Mfr. Part No. 3VA9353-0KB03
Each
TWD1,885.00(exc. GST)
Temporarily out of stock
Better World
Siemens RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8752
  • Mfr. Part No. 5SU1354-6LB40
Each
TWD7,916.00(exc. GST)
In Stock
ETA ESX10 Electronic Circuit breaker 2A 24V ESX10-T, 1 channels , Plug-In Mounting
  • RS Stock No. 723-4843
  • Mfr. Part No. ESX10-TB-101-DC24V-2A
Each
TWD4,094.00(exc. GST)
In Stock
Better World
Siemens SENTRON 5SL6 MCB, 3+N, 40A Curve C
  • RS Stock No. 216-5926
  • Mfr. Part No. 5SL6440-7
Each
TWD8,802.00(exc. GST)
Temporarily out of stock
Legrand DX Range DX3 MCB, 4P, 32A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 731-9752
  • Mfr. Part No. 4 079 01
Each
TWD8,600.00(exc. GST)
Temporarily out of stock
Legrand DX Range DX3 MCB, 4P, 40A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 731-9761
  • Mfr. Part No. 4 079 02
Each
TWD11,169.00(exc. GST)
In Stock
Legrand DX Range DX3 MCB, 3P, 20A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 731-9720
  • Mfr. Part No. 4 078 30
Each
TWD5,910.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 3P, 16A Curve C, 400V AC
  • RS Stock No. 239-9969
  • Mfr. Part No. A9P22316
Each
TWD3,728.00(exc. GST)
Temporarily out of stock
Schneider Electric Cross Elbow Busbar Trunking, 200 → 1200mm, 400A, Canalis Series
  • RS Stock No. 335-024
  • Mfr. Part No. KSA400DZCG43F
Each
TWD98,704.00(exc. GST)
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