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

120 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 3P 175A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-502
  • Mfr. Part No. 3VA5217-7EC31-2AA0
Each
HK$10,763.10
In Stock
Eaton xEffect MCB, 3P, 25A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3563
  • Mfr. Part No. 278898 FAZ-D25/3
Each
HK$830.40
Temporarily out of stock
Better World
Siemens SENTRON 5SY4 MCB, 4P, 300mA Curve D, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8830
  • Mfr. Part No. 5SY4414-8
Each
HK$1,698.30
In Stock
Eaton xEffect MCB, 4P, 63A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4857
  • Mfr. Part No. 168096 FAZ6-D63/4
Each
HK$1,800.80
In Stock
Europa EUC1P EUB MCB, 1P, 40A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6487
  • Mfr. Part No. EUC1P40B
Each
HK$67.50
Temporarily out of stock
SENTRON Lug Connector for use with 3VA57/67 Series
  • RS Stock No. 263-559
  • Mfr. Part No. 3VA9773-0QK01
1 Kit
HK$19,446.70
Temporarily out of stock
Siemens, SENTRON MCCB 1P 90A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 147-727
  • Mfr. Part No. 3VA5190-5ED11-0AA0
Each
HK$1,280.40
In Stock
Eaton xEffect MCB, 1P, 1A Curve D, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7024
  • Mfr. Part No. 278569 FAZ-D1/1
Each
HK$249.20
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 500A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1743
  • Mfr. Part No. 3VA2450-5MN32-0AA0
Each
HK$24,598.40
In Stock
Eaton MCCB 1P 125A, Breaking Capacity 80 kA, Fixed Mount
  • RS Stock No. 628-8082
  • Mfr. Part No. 259142 PN1-125
1 Box of 1
HK$2,836.90
Temporarily out of stock
Schneider Electric Horizontal Distribution Length, 3m, 25A, KBB Series
  • RS Stock No. 654-520
  • Mfr. Part No. KBB25ED44300W
Each
HK$1,584.11
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 75 A
  • RS Stock No. 117-002
  • Mfr. Part No. KV FC 18
Each
HK$314.40
Temporarily out of stock
Schneider Electric ComPacT Cover Frame for use with ComPacT NS630b
  • RS Stock No. 655-000
  • Mfr. Part No. C160H3WM
Each
HK$57,360.20
In Stock
Lovato Single Phase Surge Protector, 60kA, DIN Rail Mount
  • RS Stock No. 248-5658
  • Mfr. Part No. SA04PA320R
Each
HK$4,385.40
Temporarily out of stock
ABB RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 181-4379
  • Mfr. Part No. 2CSA275103R1165 DS-ARC1 M B16 A30
Each
HK$2,478.70
In Stock
Better World
Schneider Electric Acti 9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Each
HK$340.20
In Stock
Schneider Electric Multi9 M9F MCB, 2P, 8A Curve D, 240V AC, 125V DC, 14 kA Breaking Capacity
  • RS Stock No. 288-1399
  • Mfr. Part No. M9F23208
Each
HK$1,767.90
Temporarily out of stock
Better World
Siemens SENTRON 5SY7 MCB, 1+N, 16A Curve B, 230V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-7551
  • Mfr. Part No. 5SY7516-6
Each
HK$610.00
Temporarily out of stock
Schneider Electric Flexible Elbow Busbar Trunking, 250mm, 400A, Canalis Series
  • RS Stock No. 119-455
  • Mfr. Part No. KSA400DLE401
Each
HK$17,402.00
Temporarily out of stock
Schneider Electric Flexible Element, 500mm, 40A, KBB Series
  • RS Stock No. 655-015
  • Mfr. Part No. KBB40DF4405TW
Each
HK$5,162.93
1
120
1793
Results per page

Related links