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

17 of 999+
In Stock
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 15A Current Rating
  • RS Stock No. 221-5612
  • Mfr. Part No. 3-128-218
Each
HK$156.50
In Stock
ABB, Tmax MCCB 3P 400A, Fixed Mount
  • RS Stock No. 237-5967
  • Mfr. Part No. 1SDA054445R1 T5H400 FF TMA 400A
Each
HK$10,282.20
Temporarily out of stock
ABB Tmax XT Plate for use with Circuit Breaker
  • RS Stock No. 231-9372
  • Mfr. Part No. 1SDA105123R1 MIR-P x XT5 P/W 400A FP
1 Box of 1
HK$954.33
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 27 Way, 125 A
  • RS Stock No. 339-683
  • Mfr. Part No. SEA9APN27
Each
HK$5,258.40
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve K, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7996
  • Mfr. Part No. 2CDS252001R0467 S202-K16
Each
HK$557.60
Temporarily out of stock
Better World
Siemens, SENTRON Circuit breaker 4P 160A, DIN Rail Mount
  • RS Stock No. 224-7817
  • Mfr. Part No. 3VA1116-5GF42-0AA0
Each
HK$11,139.70
Temporarily out of 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
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 260-8125
  • Mfr. Part No. C40N32D400
Each
HK$31,959.83
In Stock
Schneider Electric Multi 9 C60H-DC MCB, 2P, 4A Curve C, 500V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2471
  • Mfr. Part No. M9U21204
Each
HK$1,018.70
Temporarily out of stock
ABB Tmax XT Key Lock for use with Tmax XT
  • RS Stock No. 237-6099
  • Mfr. Part No. 1SDA066593R1 KLC XT1
Each
HK$877.91
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti9 Range
  • RS Stock No. 201-2236
  • Mfr. Part No. A9DC3616
Each
HK$1,651.40
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 63A 3VA2, 4 channels
  • RS Stock No. 157-228
  • Mfr. Part No. 3VA2163-8JP42-0AA0
Each
HK$19,404.40
Temporarily out of stock
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 232-0270
  • Mfr. Part No. 1SDA068092R1 XT4N 250 TMA 250A FF
Each
HK$6,967.20
Temporarily out of stock
Eaton xE?ect - FRCdM RCCB, 25A, 4 Pole, 300mA, 240/415V ac
  • RS Stock No. 121-213
  • Mfr. Part No. 167888 FRCDM-25/4/03-S/B+
Each
HK$8,931.80
In Stock
ABB ZLS Terminal for SMISSLINE TP System
  • RS Stock No. 231-9541
  • Mfr. Part No. 2CCA183441R0001 ZLS919
1 Box of 1
HK$1,066.30
In Stock
ABB Electronic Circuit Breaker 0.5A 24V EPD24, DIN Rail Mount
  • RS Stock No. 914-4590
  • Mfr. Part No. 2CDE601101R2905
Each
HK$1,291.50
Temporarily out of stock
Better World
Siemens SENTRON 5SY7 MCB, 4P, 1A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8974
  • Mfr. Part No. 5SY7401-7
Each
HK$1,682.20
In Stock
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti 9 Range
  • RS Stock No. 790-9452
  • Mfr. Part No. A9D56620
Each
HK$2,197.60
In Stock
Better World
Schneider Electric iID RCCB, 40A, 4 Pole, 300mA, Type B-SI, 400V ac
  • RS Stock No. 248-3724
  • Mfr. Part No. A9Z64440
Each
HK$8,453.60
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1746
  • Mfr. Part No. 3VA2563-5HL42-0AA0
Each
HK$27,357.90
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