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

1715 of 999+
In Stock
Better World
Schneider Electric RCBO, 40A Current Rating, 3P Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3302
  • Mfr. Part No. A9DK5740
Each
HK$3,564.10
Temporarily out of stock
Eaton NZMH3 Electronic Circuit Breaker 320A , 3 channels , Fixed
  • RS Stock No. 120-675
  • Mfr. Part No. 168917 NZMH3-S320-SVE
Each
HK$25,908.80
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 100A 3VA2, 3 channels
  • RS Stock No. 157-245
  • Mfr. Part No. 3VA2110-5HK32-0AA0
Each
HK$6,097.10
Temporarily out of stock
Schurter Thermal Circuit Breaker - T13 Single Pole 240V ac Voltage Rating, 1A Current Rating
  • RS Stock No. 173-9843
  • Mfr. Part No. 4411.0129
Each (In a Box of 20)
HK$210.08
Temporarily out of stock
Eaton xEffect FAZ MCB, 4P, 6A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 246-828
  • Mfr. Part No. 190831 FAZ-D6/4-NA
Each
HK$2,706.50
Temporarily out of stock
Siemens ALPHA Base for use with ALPHA 630 DIN
  • RS Stock No. 629-095
  • Mfr. Part No. 8GK9902-0KK43
Each
HK$2,584.18
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 35A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 241-200
  • Mfr. Part No. 102215 FAZ-C35/2-RT
Each
HK$1,488.11
Temporarily out of stock
ABB S804C MCB, 4P, 13A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-427
  • Mfr. Part No. 2CCS884001R0134
Each
HK$4,863.78
Temporarily out of stock
Better World
Siemens SENTRON 5SY6 MCB, 1P, 63A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8960
  • Mfr. Part No. 5SY6163-6
Each
HK$228.20
Temporarily out of stock
Better World
Siemens SENTRON 5SY7 MCB, 3+N, 13A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8982
  • Mfr. Part No. 5SY7613-7
Each
HK$1,475.30
Temporarily out of stock
Eaton RCBO, 16A Current Rating, 3P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS Stock No. 123-292
  • Mfr. Part No. 170745 FRBMM-C16/3/01-A
Each
HK$1,665.09
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3768
  • Mfr. Part No. 3VA2063-5HL46-0AA0
Each
HK$7,111.40
Temporarily out of stock
ABB S800S MCB, 1P, 40A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-957
  • Mfr. Part No. 2CCS861001R0557
Each
HK$2,043.49
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-6557
  • Mfr. Part No. 1SDA068031R1 DCL EKIP M-LIU IN=160A XT4
Each
HK$8,751.10
In Stock
Better World
Siemens RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6165
  • Mfr. Part No. 5SU1324-7FP06
Each
HK$1,248.00
Temporarily out of stock
Eaton RCCB, 40A, 4 Pole, 500mA, Type AC, 230 V ac, 400 V ac
  • RS Stock No. 227-0735
  • Mfr. Part No. 264303 PFGM-40/4/05
Each
HK$2,055.38
In Stock
Eaton xEffect MCB, 2P, 1A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3232
  • Mfr. Part No. 278745 FAZ-C1/2
Each
HK$724.90
In Stock
Eaton xEffect MCB, 3P, 25A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3324
  • Mfr. Part No. 102252 FAZ-C25/3-NA
Each
HK$1,117.10
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 300mA Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-351
  • Mfr. Part No. 2CDS272061R0117
Each
HK$2,657.29
Temporarily out of stock
Schneider Electric Vigi C120 MCB, 4P, 125A, Type AC
  • RS Stock No. 248-3688
  • Mfr. Part No. A9N18571
Each
HK$3,638.50
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