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    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

    34135 Products showing for Circuit Breakers

    1 of 999+
    Better World
    Schneider Electric iID RCCB, 63A, 4 Pole, 300mA, Type B-SI, 400V ac
    • RS Stock No. 248-3725
    • Mfr. Part No. A9Z64463
    Each
    HK$11,187.30
    Schneider Electric Padlock Device for use with ComPact NS630b → NS1600
    • RS Stock No. 181-2588
    • Mfr. Part No. 44936
    Each
    HK$221.30
    Better World
    Schneider Electric Busbar Tap-Off Unit with Circuit Breaker, Canalis KN Series
    • RS Stock No. 406-344
    • Mfr. Part No. KNB32CM55
    Each
    HK$986.20
    Better World
    Siemens Sentron 5SY4 MCB, 3P, 32A Curve D, 400V AC, 10 kA Breaking Capacity
    • RS Stock No. 772-1385
    • Mfr. Part No. 5SY4332-8
    Each
    HK$1,143.00
    Eaton xEffect MCB, 2P, 4A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
    • RS Stock No. 769-4661
    • Mfr. Part No. 239099 FAZ6-C4/2
    Each
    HK$589.30
    ETA Thermal Magnetic Circuit Breaker - 201 Single Pole, 1A Current Rating
    • RS Stock No. 333-237
    • Mfr. Part No. 201-1A
    Each
    HK$282.20
    Better World
    Siemens Sentron 5SY6 MCB, 1P, 3A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
    • RS Stock No. 521-4945
    • Mfr. Part No. 5SY6103-7
    Each
    HK$177.70
    Legrand DX Range DX3 MCB, 3P, 16A Curve C, 230V AC, 10 kA Breaking Capacity
    • RS Stock No. 731-9727
    • Mfr. Part No. 4 078 29
    Each
    HK$1,453.99
    RS PRO MCB/RCBO Lock for use with MCB, RCBO, RCCB, Main Isolator
    • RS Stock No. 798-2233
    Each (In a Pack of 3)
    HK$20.667
    Better World
    Schneider Electric Busbar Trunking Blanking Plate, Canalis KBC Series
    • RS Stock No. 219-8883
    • Mfr. Part No. KBC16ZB1
    Each (In a Pack of 10)
    HK$64.24
    Lovato ModuLo P1MB MCB, 2P, 1A Curve B, 230V AC, 80V DC, 10 kA Breaking Capacity
    • RS Stock No. 825-5668
    • Mfr. Part No. P1MB2PB01
    Each
    HK$467.80
    Better World
    ABB System Pro M Compact S200 MCB, 2P, 32A Curve B, 400V AC, 125V DC, 10 kA Breaking Capacity
    • RS Stock No. 746-7576
    • Mfr. Part No. 2CDS252001R0325 S202-B32
    Each
    HK$596.60
    Schneider Electric PowerPact B Mechanical Interlock for use with PowerPact B
    • RS Stock No. 357-787
    • Mfr. Part No. LV426909
    Each
    HK$1,009.03
    ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 20 kA, Fixed Mount
    • RS Stock No. 232-0084
    • Mfr. Part No. 1SDA054317R1 T5N400 FF PR221-LS 400A
    Each
    HK$9,490.40
    Siemens SENTRON 3 Phase Busbar, 18mm Pitch
    • RS Stock No. 521-5055
    • Mfr. Part No. 5ST3740
    Each
    HK$485.20
    ABB, XT2N MCCB 3P 63A, Fixed Mount
    • RS Stock No. 237-6213
    • Mfr. Part No. 1SDA067016R1 XT2N 160 TMA 63A FF
    Each
    HK$2,637.00
    Better World
    Schneider Electric MCCB 2P 15 → 125A, Fixed Mount
    • RS Stock No. 178-7899
    • Mfr. Part No. LV426966
    Each
    HK$339.80
    ABB System Pro M Compact S200 M UC MCB, 2P, 8A, Type Z, 400V AC, 440V DC, 10 kA Breaking Capacity
    • RS Stock No. 204-359
    • Mfr. Part No. 2CDS272061R0408
    Each
    HK$3,465.86
    Better World
    Schneider Electric Acti 9 iC60H MCB, 2P, 32A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
    • RS Stock No. 791-3350
    • Mfr. Part No. A9F54232
    Each
    HK$573.40
    ABB RCBO, 32A Current Rating, 3P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
    • RS Stock No. 767-4425
    • Mfr. Part No. 2CSR273001R1324 DS203 M AC-C32/0,03
    Each
    HK$1,733.50
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