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

35852 Products showing for Circuit Breakers

1773 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 40A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-618
  • Mfr. Part No. 3VA5140-4ED21-0AA0
Each
HK$2,047.50
Temporarily out of stock
Siemens SENTRON Nut Keeper Kit for use with 3VA5
  • RS Stock No. 269-7207
  • Mfr. Part No. 3VA9474-0QA00
Each (In a Pack of 4)
HK$214.375
In Stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250
  • RS Stock No. 260-7837
  • Mfr. Part No. C253TM200
Each
HK$9,046.10
In Stock
Better World
Schneider Electric ComPact NSX, Easy Pact CVS Cover for use with ComPact NSX, Easy Pact CVS
  • RS Stock No. 219-9359
  • Mfr. Part No. LV429516
Each
HK$273.40
In Stock
Siemens Alpha Blanking Strip
  • RS Stock No. 209-7096
  • Mfr. Part No. 8GK9910-0KK01
Each
HK$301.50
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 2P 35A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-470
  • Mfr. Part No. BGL26035LU
Each
HK$6,372.37
Temporarily out of stock
ABB S301 MCB, 1P, 32A Curve B, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-274
  • Mfr. Part No. 2CDS381001R0325
Each
HK$1,027.60
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 3P, 25A Curve C, 400V AC
  • RS Stock No. 239-9971
  • Mfr. Part No. A9P22325
Each
HK$963.90
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 160A, Fixed Mount
  • RS Stock No. 254-6343
  • Mfr. Part No. C16F34V160
Each
HK$22,950.44
In Stock
Legrand Protective Cap
  • RS Stock No. 266-3049
  • Mfr. Part No. 0 016 91
1 Box of 5
HK$603.66
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-4138
  • Mfr. Part No. 1SDA072251R1
Each
HK$53,588.74
Temporarily out of stock
Legrand DX3 RCD, 10A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 731-9938
  • Mfr. Part No. 4 111 57
Each
HK$3,703.63
In Stock
Schneider Electric Thermal Circuit Breaker - GB2 Single Pole 277V ac Voltage Rating DIN Rail Mount, 10A Current Rating
  • RS Stock No. 312-3718
  • Mfr. Part No. GB2CB16
Each
HK$374.90
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-541
  • Mfr. Part No. 3VA5112-4GD41-0AA0
Each
HK$10,465.30
Temporarily out of stock
Schneider Electric Flexible Elbow Busbar Trunking, 800mm, 630A, Canalis Series
  • RS Stock No. 340-961
  • Mfr. Part No. KSA630DLE42A
Each
HK$19,687.30
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 207-2779
  • Mfr. Part No. 2907878
Each
HK$779.90
Temporarily out of stock
Better World
ABB SN201 MCB, 1P, 40A Curve D
  • RS Stock No. 237-1428
  • Mfr. Part No. 2CSS255101R0401
Each
HK$318.18
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7678
  • Mfr. Part No. C12B4TM160L
Each
HK$9,792.03
In Stock
Better World
Schneider Electric ID RCCB, 40A, 2 Pole, 30mA, Type AC, 240V ac
  • RS Stock No. 214-2096
  • Mfr. Part No. M9R11240
Each
HK$767.80
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - R11 Single Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0451
  • Mfr. Part No. R11-2-15.0A-B06CV-V
1 Box of 10
HK$1,605.70
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