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

1784 of 999+
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 125A, Fixed Mount
  • RS Stock No. 254-6331
  • Mfr. Part No. C12H3TM125L
Each
HK$9,386.68
Temporarily out of stock
Better World
Siemens RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 151-1203
  • Mfr. Part No. 5SU1354-7KK32
Each
HK$1,283.80
Temporarily out of stock
SENTRON Shunt Trip Voltage Release for use with 3VA4/5/6 Series
  • RS Stock No. 263-702
  • Mfr. Part No. 3VA9978-0BL32
Each
HK$1,367.30
Temporarily out of stock
Better World
Siemens RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6177
  • Mfr. Part No. 5SU1324-7FR32
Each
HK$1,711.10
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 40A, Type A, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-312
  • Mfr. Part No. 5SY4240-5
Each
HK$1,622.18
Temporarily out of stock
ABB RCBO, 6A Current Rating, 4P Poles, Type B
  • RS Stock No. 237-5109
  • Mfr. Part No. 2CSR254101R1065
Each
HK$3,361.05
Temporarily out of stock
ABB RCBO, 16A Current Rating, 1P Poles, Type C
  • RS Stock No. 237-5239
  • Mfr. Part No. 2CSR275051R3164
Each
HK$1,418.13
In Stock
Better World
Siemens Sentron 5SY6 MCB, 2P, 16A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 196-3631
  • Mfr. Part No. 5SY6216-7
Each
HK$421.20
Temporarily out of stock
Better World
Siemens SENTRON 5SV6 Fire Safety Circuit Breaker, 1+N, 13A Curve C, 1 A Breaking Capacity
  • RS Stock No. 199-5125
  • Mfr. Part No. 5SV6016-7KP13
Each
HK$1,642.50
Temporarily out of stock
Siemens SENTRON Plug for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-533
  • Mfr. Part No. 3VW9011-0LF58
Each
HK$1,197.00
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 10A Curve C, 240V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3446
  • Mfr. Part No. A9F77110
Each
HK$304.70
New product - Preorder today
Schneider Electric Tee Elbow Busbar Trunking, 290mm, 630A, KSA Series
  • RS Stock No. 655-016
  • Mfr. Part No. KSA630DLC401
Each
HK$20,127.40
Temporarily out of stock
Hager BD RCD, 25A, 2 Pole, 10mA, 230 → 400V
  • RS Stock No. 599-877
  • Mfr. Part No. BD266
Each
HK$5,342.90
Temporarily out of stock
Eaton NZM Electronic Circuit Breaker 100A , 4 channels , Fixed
  • RS Stock No. 120-159
  • Mfr. Part No. 153390 NZMN2-4-AF100-BT-NA
Each
HK$12,169.43
Temporarily out of stock
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 7.5 kA, Fixed Mount
  • RS Stock No. 247-146
  • Mfr. Part No. 102681 NS1-63-NA
Each
HK$3,394.76
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 260-7525
  • Mfr. Part No. C11B3TM032B
Each
HK$3,858.01
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 3A Curve D, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7823
  • Mfr. Part No. 2CDS251001R0031 S201-D3
Each
HK$197.90
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 207-213
  • Mfr. Part No. C11H34V100L
Each
HK$13,708.30
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 3P, 45A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-304
  • Mfr. Part No. 5SY4345-7
Each
HK$2,442.71
In Stock
Eaton xEffect MCB, 2P, 8A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3425
  • Mfr. Part No. 278755 FAZ-C8/2
Each
HK$543.90
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