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

69 of 999+
Temporarily out of stock
Siemens SENTRON Cover for use with 3VA1 400/630 and 3VA2 400/630
  • RS Stock No. 210-9378
  • Mfr. Part No. 3VA9354-0KB04
Each
HK$371.90
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4304
  • Mfr. Part No. 3VA1140-4EF36-0AA0
Each
HK$2,605.50
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 50A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-255
  • Mfr. Part No. 2CDS274001R0501
Each
HK$5,808.31
In Stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 20 kA, Fixed Mount
  • RS Stock No. 232-0085
  • Mfr. Part No. 1SDA054325R1 T5N400 FF PR221-LS 400A
Each
HK$15,482.51
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA
  • RS Stock No. 209-6901
  • Mfr. Part No. 3VA2063-5KP46-0AA0
Each
HK$13,954.90
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Schneider Electric MasterPact Connection Unit for use with MasterPact MTZ1 06-16 H1
  • RS Stock No. 654-645
  • Mfr. Part No. LV833616
Each
HK$3,745.50
In Stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-8093
  • Mfr. Part No. C40F3TM250D
Each
HK$19,992.70
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 1.8kV, DIN Rail Mount
  • RS Stock No. 121-150
  • Mfr. Part No. 167624 SPCT2-385-3+NPE
Each
HK$2,216.95
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 16A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3568
  • Mfr. Part No. A9F55316
Each
HK$909.90
Temporarily out of stock
Schneider Electric MasterPacT Locking Kit for use with MasterPact NW
  • RS Stock No. 341-053
  • Mfr. Part No. 64939
Each
HK$2,887.40
Temporarily out of stock
Siemens SENTRON 5SJ4306 MCB, 3P, 6A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 300-069
  • Mfr. Part No. 5SJ4306-8HG42
Each
HK$2,605.10
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 110A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-941
  • Mfr. Part No. BGL36110LU
Each
HK$12,871.61
Temporarily out of stock
Hager CZ001 RCCB, 6A, 2 Pole, Type AC, 240V
  • RS Stock No. 599-737
  • Mfr. Part No. CZ001
Each
HK$897.50
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 50A, Breaking Capacity 25 kA
  • RS Stock No. 209-6828
  • Mfr. Part No. 3VA1150-3EE46-0AA0
Each
HK$4,296.40
Temporarily out of stock
ABB SMISSLINE Busbar for Smissline TP
  • RS Stock No. 246-2305
  • Mfr. Part No. 2CCF800219R0001
Each
HK$29.40
In Stock
Schneider Electric Thermal Circuit Breaker - GB2 1P + N Pole 250V ac Voltage Rating DIN Rail Mount, 10A Current Rating
  • RS Stock No. 610-0910
  • Mfr. Part No. GB2CD16
Each
HK$301.30
Temporarily out of stock
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 247-084
  • Mfr. Part No. 100778 NZMH2-VE160-S1
Each
HK$18,564.20
In Stock
Better World
Schneider Electric Acti 9 Connector Monoconnect for use with Acti 9/Multi 9, Horizontal Comb Busbar for 18 mm Pitch
  • RS Stock No. 806-7405
  • Mfr. Part No. A9XPCM04
Each
HK$543.80
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9647
  • Mfr. Part No. 3VA11103FF460AA0
Each
HK$5,734.80
Temporarily out of stock
Siemens SENTRON Mounting Plate for use with 3VA1 250
  • RS Stock No. 210-3523
  • Mfr. Part No. 3VA9211-0WK40
Each
HK$205.80
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