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 產品顯示為 Circuit Breakers

57 of 999+
Temporarily out of stock
Siemens SENTRON Adapter for use with 3VA12/20/21/22/52/61/62
  • RS Stock No. 157-998
  • Mfr. Part No. 8US1213-4AP03
Each
HK$1,485.30
Temporarily out of stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)2, NZM2
  • RS Stock No. 243-479
  • Mfr. Part No. 100684 NZM2-XTVDV-NA
Each
HK$1,060.28
Temporarily out of stock
Eaton Eaton Moeller Series NZM Mounting Plate for use with N3, NS3, NZM3, NZM3-NA, PN3
  • RS Stock No. 230-417
  • Mfr. Part No. 119382 NZM3-XAP10
Each
HK$1,460.21
Temporarily out of stock
Eaton Mounting Plate
  • RS Stock No. 231-547
  • Mfr. Part No. 119381 NZM2-XAP7
Each
HK$1,283.50
In Stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)3, NZM3
  • RS Stock No. 247-081
  • Mfr. Part No. 100685 NZM3-XTVDV-NA
Each
HK$2,055.45
Temporarily out of stock
ABB S800U MCB, 2P, 90A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-174
  • Mfr. Part No. 2CCS862017R0907
Each
HK$6,800.89
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LEGF6 Single Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0349
  • Mfr. Part No. LEGF6-1-62-10.0-A-01-V
1 Box of 5
HK$1,904.20
Temporarily out of stock
ABB System Pro M Compact S200L MCB, 1P, 20A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 183-3627
  • Mfr. Part No. 2CDS241701R0204
Each
HK$223.14
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 16A Curve D, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2389
  • Mfr. Part No. M9F23116
Each
HK$148.20
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9F9 MCB, 3P, 1A Curve K, 400V AC, 180V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2508
  • Mfr. Part No. A9F95301
Each
HK$4,386.69
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
In Stock
TE Connectivity Busbar
  • RS Stock No. 680-4233P
  • Mfr. Part No. ST37001
Each (Supplied in a Box)
HK$216.50
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-131
  • Mfr. Part No. 3VA6610-6HL46-0AA0
Each
HK$83,371.50
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 4kA , 3 channels , Fixed
  • RS Stock No. 132-658
  • Mfr. Part No. 183633 IZMX40N3-P40F-1
Each
HK$292,170.96
In Stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 16A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9453
  • Mfr. Part No. 3VA1196-4ED12-0AA0
Each
HK$989.00
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-272
  • Mfr. Part No. 3VA6460-5KP41-0AA0
Each
HK$46,624.40
In Stock
TE Connectivity Thermal Circuit Breaker - W23 Single Pole 50 V dc, 250V ac Voltage Rating, 5A Current Rating
  • RS Stock No. 782-0886
  • Mfr. Part No. W23-X1A1G-5
Each
HK$268.60
Temporarily out of stock
Siemens SENTRON 4 Phase Busbar
  • RS Stock No. 187-5193
  • Mfr. Part No. 5ST3720
Each
HK$1,626.00
Temporarily out of stock
Schneider Electric ComPacT Control Unit for use with Compact NS630b
  • RS Stock No. 347-120
  • Mfr. Part No. C2AFM
Each
HK$17,974.81
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV4PEM 3 Pole 690V ac Voltage Rating, 2A Current Rating
  • RS Stock No. 175-1557
  • Mfr. Part No. GV4PEM02N6
Each
HK$5,344.60
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