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

154 of 999+
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-762
  • Mfr. Part No. 3VA6140-7HL31-2AA0
Each
HK$10,533.70
Temporarily out of stock
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 654-842
  • Mfr. Part No. A9DH3610
Each
HK$2,944.70
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 13A Curve B, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-100
  • Mfr. Part No. 2CDS272001R0135 S202M-B13
Each
HK$562.40
In Stock
Murrelektronik Limited Electronic Circuit Breaker
  • RS Stock No. 123-6688
  • Mfr. Part No. 9000-41034-0100400
Each
HK$2,033.30
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
In Stock
Better World
Siemens RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6198
  • Mfr. Part No. 5SU1326-7FP16
Each
HK$943.00
In Stock
Schneider Electric, ComPacT MCCB 2P 50A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 654-493
  • Mfr. Part No. C10M2TM050
Each
HK$3,301.73
In Stock
ABB S800PV MCB, 2P, 50A Curve B, 800V DC, 5 kA Breaking Capacity
  • RS Stock No. 225-5924
  • Mfr. Part No. 2CCF019604R0001 S802PV-SP50 - 5 kA
Each
HK$1,971.40
Temporarily out of stock
Phoenix Contact TMCP SB Plug In Bridge for use with TMCP SOCKET M Socket
  • RS Stock No. 135-778
  • Mfr. Part No. 0916602
1 Pack of 6
HK$1,081.90
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 3P, 10A Curve C, 100 → 130V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9141
  • Mfr. Part No. A9F77310
Each
HK$1,140.70
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 1P, 5A Curve B, 277V AC
  • RS Stock No. 256-6750
  • Mfr. Part No. M9F21105
Each
HK$859.80
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9678
  • Mfr. Part No. 3VA11105GE460AA0
Each
HK$6,334.40
Temporarily out of stock
Better World
Siemens SENTRON 5SY7 MCB, 3+N, 25A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8984
  • Mfr. Part No. 5SY7625-6
Each
HK$1,475.30
In Stock
RS PRO Thermal Circuit Breaker -, 10A Current Rating
  • RS Stock No. 774-0027
Each
HK$52.50
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 236-6721
  • Mfr. Part No. 1SDA068370R1 XT4L 160 TMA 50A FF
Each
HK$7,011.50
In Stock
Hager NFN MCB, 2P, 50A Curve C, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4718
  • Mfr. Part No. NFN250
Each
HK$1,698.93
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-498
  • Mfr. Part No. 3VA5110-6ED31-0AA0
Each
HK$3,179.40
In Stock
Schurter Thermal Circuit Breaker - T11-211 Single Pole 240V Voltage Rating Snap In, 2A Current Rating
  • RS Stock No. 868-8790
  • Mfr. Part No. 4400.0193
Each
HK$47.60
Temporarily out of stock
Vigi iC60 - earth leakage add-on block -
  • RS Stock No. 248-3706
  • Mfr. Part No. A9V15263
Each
HK$3,663.40
In Stock
Better World
ABB Compact Home SH200 MCB, 1P, 20A Curve C, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8245
  • Mfr. Part No. 2CDS211001R0204 SH201-C20
Each
HK$126.70
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