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

1779 of 999+
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IULHK11 2 Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0310
  • Mfr. Part No. IULHK11-1REC4-62-15.0-A-01
Each
HK$1,280.70
Temporarily out of stock
Schneider Electric CompacT Cover Frame for use with ComPacT NS1600b
  • RS Stock No. 654-861
  • Mfr. Part No. C320H3FM
Each
HK$137,365.10
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 1P, 300mA Curve K, 240V AC, 72V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-731
  • Mfr. Part No. 2CDS381001R0117
Each
HK$1,065.66
Temporarily out of stock
Siemens 230V ac Circuit Trip
  • RS Stock No. 213-2453
  • Mfr. Part No. 5TT4121-0
Each
HK$510.90
Temporarily out of stock
Siemens SENTRON Controller
  • RS Stock No. 277-0955
  • Mfr. Part No. 3WA9111-0EM62
1 Set
HK$4,054.60
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 25A Curve B, 440V AC, 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2152
  • Mfr. Part No. A9F06325
Each
HK$840.87
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 1+N, 63A Curve D, 240V AC, 72V DC, 25 kA Breaking Capacity
  • RS Stock No. 200-738
  • Mfr. Part No. 2CDS381103R0631
Each
HK$2,759.29
Temporarily out of stock
Better World
Siemens SENTRON 5SY6 MCB, 2P, 63A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 209-6019
  • Mfr. Part No. 5SY6263-7
Each
HK$1,466.00
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 450A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 239-777
  • Mfr. Part No. 192327 NZMH3-PMX450
Each
HK$34,920.20
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 3A Curve C, 240V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3430
  • Mfr. Part No. A9F74103
Each
HK$434.30
Temporarily out of stock
Better World
Schneider Electric iC60 RCD, 63A, 300mA
  • RS Stock No. 734-9696
  • Mfr. Part No. A9V15463
Each
HK$4,624.25
Temporarily out of stock
ABB System Pro M Compact SU200M MCB, 1P, 2A Curve K, 277V AC, 277V DC, 15 kA Breaking Capacity
  • RS Stock No. 231-9713
  • Mfr. Part No. 2CDS271337R0277 SU201M-K2
1 Box of 1
HK$524.91
Temporarily out of stock
Better World
ABB System Pro M Compact S200M MCB, 4P, 6A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-8087
  • Mfr. Part No. 2CDS274001R0065 S204M-B6
Each
HK$1,199.60
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7759
  • Mfr. Part No. C16F3TM100
Each
HK$7,908.67
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar, 690V
  • RS Stock No. 211-2322
  • Mfr. Part No. LA9ZX01515
Each (In a Pack of 2)
HK$848.73
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 250-4147
  • Mfr. Part No. 1SDA054418R1
Each
HK$50,046.03
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8141
  • Mfr. Part No. C40R42D400
Each
HK$42,038.00
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LEGH66 2 Pole Panel Mount, 5A Current Rating
  • RS Stock No. 275-0354
  • Mfr. Part No. LEGH66-1-63-5.00-A-01-V
1 Box of 5
HK$4,396.30
Temporarily out of stock
Eaton Enclosure for use with Circuit Breakers, Switch Disconnectors
  • RS Stock No. 103-801
  • Mfr. Part No. 138541 MCCB2-200/I43E-200
Each
HK$2,797.35
Temporarily out of stock
Schneider Electric Flexible Elbow Busbar Trunking, 1.2m, 400A, Canalis Series
  • RS Stock No. 340-958
  • Mfr. Part No. KSA400DLF43F
Each
HK$21,116.60
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