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

26 of 999+
Temporarily out of stock
Siemens 3ZY1121 Removable Terminal for use with SIRIUS devices
  • RS Stock No. 203-4007
  • Mfr. Part No. 3ZY1121-1BA00
Each (In a Pack of 6)
HK$115.933
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-358
  • Mfr. Part No. 3VA5320-6EC41-0AA0
Each
HK$15,031.20
Temporarily out of stock
Siemens SENTRON 3VA9 Cover for use with 3VA1 250
  • RS Stock No. 218-1811
  • Mfr. Part No. 3VA9211-0WD40
Each
HK$196.60
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 20A Curve B, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7564
  • Mfr. Part No. 2CDS252001R0205 S202-B20
Each
HK$449.30
Temporarily out of stock
Siemens SENTRON 3VA9 Cover for use with 3VA1 100/160
  • RS Stock No. 218-1781
  • Mfr. Part No. 3VA9111-0WG40
Each
HK$341.60
In Stock
Phoenix Contact Thermal Circuit Breaker - TCP 6A Single Pole 65 V dc, 250V ac Voltage Rating, 6A Current Rating
  • RS Stock No. 801-6918
  • Mfr. Part No. 0712275
Each
HK$128.00
In Stock
Phoenix Contact Thermal Circuit Breaker - TCP 4A Single Pole 65 V dc, 250V ac Voltage Rating, 4A Current Rating
  • RS Stock No. 801-6909
  • Mfr. Part No. 0712259
Each
HK$128.30
In Stock
Phoenix Contact Thermal Circuit Breaker - TCP 10A Single Pole 65 V dc, 250V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 801-6915
  • Mfr. Part No. 0712314
Each
HK$128.00
Temporarily out of stock
Siemens SENTRON Nut Keeper Kit for use with 3VA1
  • RS Stock No. 269-7188
  • Mfr. Part No. 3VA9403-0QG00
Each (In a Pack of 3)
HK$147.067
In Stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 20 kA, Fixed Mount
  • RS Stock No. 232-0088
  • Mfr. Part No. 1SDA054396R1 T5N630 FF PR221-LS 630A
Each
HK$15,115.30
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4348
  • Mfr. Part No. 3VA1180-3EE36-0AA0
Each
HK$2,408.90
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3817
  • Mfr. Part No. 3VA5110-5EC31-0AA0
Each
HK$6,769.90
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 269-7211
  • Mfr. Part No. 3VA9503-0JG23
Each (In a Pack of 3)
HK$489.467
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA5 250
  • RS Stock No. 269-7138
  • Mfr. Part No. 3VA9233-0JF60
Each (In a Pack of 3)
HK$343.833
Temporarily out of stock
Siemens Sentron Electrical alarm switch for use with 3VA Series Circuit Breaker
  • RS Stock No. 874-4519
  • Mfr. Part No. 3VA9988-0AB22
Each
HK$293.70
In Stock
Better World
Schneider Electric RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti 9 Range
  • RS Stock No. 790-9244
  • Mfr. Part No. A9D19210
Each
HK$2,458.40
In Stock
Better World
Schneider Electric iID RCCB, 25A, 2 Pole, 300mA
  • RS Stock No. 734-9337
  • Mfr. Part No. A9R14225
Each
HK$1,712.52
In Stock
Phoenix Contact Thermal Circuit Breaker - TCP 2A Single Pole 65 V dc, 250V ac Voltage Rating, 2A Current Rating
  • RS Stock No. 170-3786
  • Mfr. Part No. 0712217
Each (In a Box of 20)
HK$127.035
Temporarily out of stock
Siemens SIRIUS Terminal for use with 3-Phase Busbar
  • RS Stock No. 272-0033
  • Mfr. Part No. 3RV19355A
Each
HK$147.00
Temporarily out of stock
Schneider Electric Resi9 R9F2 MCB, 3P, 16A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 212-209
  • Mfr. Part No. R9F28316
Each
HK$1,156.05
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