MCCBs | Moulded Case Circuit Breakers | RS
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    MCCBs

    Molded Case Circuit Breakers (MCCBs) are protective devices used to interrupt and protect electrical circuits from overcurrent and short-circuits. MCCBs are electrical devices that can be used to protect a wide range of electrical systems and equipment.

    They are commonly used in low and medium-voltage applications and can handle higher levels of current than Miniature Circuit Breakers (MCBs). MCCBs typically have a rated current of 10 amps to 2,500 amps, and a breaking capacity of up to 200 kA.

    How does an MCCB work?

    An MCCB consists of a current-carrying bimetallic strip, a magnetic trip element, and a mechanical latching mechanism. When the current flowing through the MCCB exceeds the set limit, the bimetallic strip heats up and bends, causing the latch to release and trip the breaker. The magnetic trip element senses the magnetic field produced by a high fault current and trips the breaker.

    Difference between an MCB and an MCCB

    MCBs are miniature circuit breakers designed to protect low-current circuits up to 125 amps. They typically have a breaking capacity of up to 10 kA and are designed to trip quickly in the event of a short circuit or overload. MCBs are commonly used in residential and commercial buildings to protect individual circuits, such as lighting and power circuits.

    MCCBs, on the other hand, are designed to handle higher levels of current (depending on which current rating you buy) and can protect larger electrical systems and equipment. They have a higher breaking capacity than MCBs.

    Typical applications

    MCCBs are commonly used in a wide range of applications, including:

    • Industrial plants: MCCBs are used to protect motors, transformers, and other equipment in industrial plants.
    • Data centres: MCCBs are used to protect power distribution systems in data centres.
    • Commercial buildings: MCCBs are used to protect lighting and power circuits in commercial buildings.
    • Hospitals: MCCBs are used to protect critical equipment in hospitals, such as MRI machines and X-ray machines.

    11102 Produits présentés pour MCCBs

    Eaton
    xEnergy
    -
    3
    100A
    25 kA
    440V
    -
    Fixed
    88mm
    90mm
    88mm
    -
    -
    -
    Eaton
    xEnergy
    -
    3
    125A
    25 kA
    440V
    -
    Fixed
    88mm
    90mm
    88mm
    -
    -
    -
    2 207,45 €
    la pièce
    Schneider Electric
    ComPact
    LV
    4
    250A
    -
    -
    -
    -
    -
    -
    -
    -
    Yes
    Green Premium
    ABB
    SACE Tmax XT
    XT1B
    3
    125A
    18 kA
    690V
    500V
    Fixed
    70mm
    76.2mm
    130mm
    -
    -
    -
    ABB
    SACE FORMULA
    A1N
    1
    20A
    -
    415V
    125V
    Fixed
    130mm
    25.4mm
    60mm
    -
    -
    -
    Schneider Electric
    PowerPact
    NHGF
    3
    150A
    65 KA
    -
    -
    DIN Rail
    -
    -
    -
    -
    -
    -
    ABB
    SACE Tmax XT
    XT3N
    4
    250A
    -
    -
    -
    Fixed
    -
    -
    -
    Designed for disassembly
    Yes
    -
    Eaton
    Eaton Moeller NZM
    -
    3
    125A
    18.5 kA
    -
    -
    Plug In
    -
    -
    -
    -
    -
    -
    ABB
    Pro M
    E200i
    3
    125A
    6 kA
    230 V, 400V
    -
    DIN Rail Mount
    69mm
    52.5mm
    85mm
    -
    -
    -
    Schneider Electric
    ComPacT
    NSX
    3
    630A
    -
    -
    -
    Fixed
    -
    -
    -
    -
    -
    -
    Schneider Electric
    ComPacT New Generation
    C10B
    3
    80A
    25 kA
    690V
    -
    Fixed
    -
    105mm
    86mm
    -
    Yes
    Green Premium
    Schneider Electric
    Compact
    NSX HB1
    3
    220A
    75 kA
    690V
    -
    Fixed
    -
    -
    -
    -
    Yes
    Green Premium
    Schneider Electric
    -
    -
    4
    -
    -
    -
    -
    Fixed
    -
    -
    -
    -
    -
    -
    Eaton
    NZM
    -
    3
    160A
    80 kA
    690V
    -
    Fixed
    105mm
    184mm
    149mm
    -
    -
    -
    ABB
    -
    1SDA05
    3
    630A
    -
    -
    -
    Fixed
    -
    -
    -
    -
    -
    -
    Schneider Electric
    ComPacT
    NSX
    4
    200A
    -
    -
    -
    Fixed
    -
    -
    -
    -
    -
    -
    Schneider Electric
    ComPacT New Generation
    NSX160B
    4
    160A
    -
    -
    -
    Fixed
    -
    -
    -
    -
    -
    -
    Schneider Electric
    ComPacT NSX
    C10F
    4
    100A
    -
    -
    -
    Fixed
    -
    -
    -
    -
    -
    -
    Schneider Electric
    ComPact
    LV42
    -
    -
    -
    -
    -
    Fixed
    -
    -
    -
    -
    Yes
    Green Premium
    ABB
    -
    -
    4
    80A
    25 kA
    690V
    500V
    -
    101.6mm
    70mm
    130mm
    -
    -
    -
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