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

61 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 1P 15A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 147-756
  • Mfr. Part No. 3VA5195-6ED11-0AA0
Each
HK$1,200.00
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4612
  • Mfr. Part No. 3VA2140-0KQ46-0AA0
Each
HK$27,489.00
Temporarily out of stock
Schneider Electric Compact Long Rear Connection for use with NS630b
  • RS Stock No. 341-038
  • Mfr. Part No. 33617
Each
HK$5,347.90
Temporarily out of stock
Siemens SENTRON 3VA9 Cover for use with 3VA2 100/160/250
  • RS Stock No. 218-1796
  • Mfr. Part No. 3VA9123-0KB01
Each
HK$388.90
In Stock
Acti9 Busbar, 440V ac, 18mm Pitch
  • RS Stock No. 585-482
  • Mfr. Part No. A9XPF521
1 Pack of 5
HK$2,762.40
Currently unavailable
ABB S203L MCB, 3P, 10A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-077
  • Mfr. Part No. 2CDS243701R0104
Each
HK$1,240.54
Temporarily out of stock
ABB S804N MCB, 4P, 20A Curve B, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-588
  • Mfr. Part No. 2CCS894001R0205
Each
HK$6,218.59
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 70A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-611
  • Mfr. Part No. 3VA5270-6EC41-2AA0
Each
HK$12,053.70
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 63A, Breaking Capacity 7.5 kA, Plug In
  • RS Stock No. 229-742
  • Mfr. Part No. 115792 NZMH1-M63-SVE
Each
HK$5,226.99
Temporarily out of stock
Siemens SENTRON Link Module for use with 3VA2 100/160/250
  • RS Stock No. 210-9311
  • Mfr. Part No. 3VA9187-0TB50
Each
HK$788.80
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 25A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3395
  • Mfr. Part No. A9F76225
Each
HK$1,151.18
Temporarily out of stock
Siemens SENTRON Guide Frame for use with Circuit Breaker 3VA27
  • RS Stock No. 265-647
  • Mfr. Part No. 3VW8116-7BF01
Each
HK$33,984.80
Temporarily out of stock
Better World
Siemens SENTRON for use with MCCB
  • RS Stock No. 218-1880
  • Mfr. Part No. 3VA9988-0BA22
Each
HK$703.90
Temporarily out of stock
SENTRON Terminal for use with 3VA61/62 Series
  • RS Stock No. 263-991
  • Mfr. Part No. 3VA9243-0JA12
1 Kit
HK$382.80
Temporarily out of stock
Siemens SENTRON Sliding Contacts for use with 3VA13/14, 3VA23/24
  • RS Stock No. 274-009
  • Mfr. Part No. 3VA9368-0VF30
Each
HK$1,883.40
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 3m, 25A, KBB Series
  • RS Stock No. 219-8859
  • Mfr. Part No. KBB25ED42305W
Each
HK$1,912.09
Temporarily out of stock
ABB S804C MCB, 4P, 16A Curve K, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-494
  • Mfr. Part No. 2CCS884001R0467
Each
HK$5,271.20
Temporarily out of stock
Better World
Schneider Electric Busbar Tap-Off Unit
  • RS Stock No. 219-8901
  • Mfr. Part No. KNB32CP
Each
HK$1,911.10
In Stock
ABB System Pro M Compact S200 MCB, 2P, 6A Curve D, 230V AC, 125V DC, 20 kA Breaking Capacity
  • RS Stock No. 191-9449
  • Mfr. Part No. 2CDS252001R0061 S202-D6
Each
HK$662.43
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA5 125
  • RS Stock No. 269-7102
  • Mfr. Part No. 3VA9134-0JG11
Each (In a Pack of 4)
HK$124.825
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