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China CBRM5 MCCB - Compact Circuit Breaker from Reliable Suppliers & Factory with High Breaking Capacity

The D&T CBRM5 MCCB is a cutting-edge circuit breaker proudly manufactured in China, designed for exceptional performance and safety. This ultra-compact MCCB meets the rigorous IEC 60947-2 standards and is backed by DEKRA certification, ensuring it is a reliable choice for various applications, As a leading supplier in the industry, our factory employs advanced technology including automatic screw fastening, precision laser marking, and fully automated testing systems. Each unit is subjected to comprehensive 100% automated testing, covering important metrics like trip force, overtravel, contact gap, loop resistance, final contact pressure, power-frequency withstand voltage, and tripping characteristics. This meticulous process guarantees consistent and dependable operation, making the D&T CBRM5 MCCB an ideal solution for your electrical needs
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    Product Details

    Product Model & Description

    CBRM5-1.jpg

    Operating Environment

    Normal Operating Conditions

    • The upper limit of ambient air temperature shall not exceed +40°C, the lower limit shall not be lower than -5°C, and the average temperature within 24 hours shall not exceed +35°C. Note: When the ambient air temperature exceeds +40°C or falls below -5°C, the use of the circuit breaker should be subject to agreement with the manufacturer.
    • Installation altitude shall not exceed 2000 m.
    • The relative humidity of the atmosphere shall not exceed 50% at the maximum ambient temperature of +40°C. Higher relative humidity is allowed at lower temperatures (e.g., 90% at 20°C), with consideration given to condensation that may occur due to temperature changes on the product surface.

    Normal Installation Conditions

    • Installation category: Category Ⅲ for the main circuit, Category Ⅱ for the control and auxiliary circuits.
    • Installation orientation: Generally installed vertically (upright), but horizontal (flat-mounted) installation is also permissible.
    • Pollution degree: Degree 3.
    • External magnetic field: The external magnetic field in the installation location shall not exceed 5 times the geomagnetic field in any direction.

    Trip Unit Types & Accessory Codes

    3.Trip Unit Types & Accessory Codes.jpg
    3.Trip Unit Types & Accessory Codes.2.jpg

    Main Technical Parameters

    Model

    CBRM5Kd-125i

    CBRM5Kd-160

    CBRM5Kd-250

    CBRM5Kd-400                       CBRM5Kd-630i

    CBRM5Kd-800

    Frame Size Current Inm(A)

    125

    160

    250

    400、630

    800

    Rated Current In(A)

    16、20、25、30、32、40、50、63、70、75、80、90、100、125

    16、20、25、30、32、40、50、63、70、75、80、90、100、125、140、150、160

    100、125、140、150、160、175、180、200、225、250

    225、250、280、300、315、350、400、500、550、630

    630、700、800

    Number of Poles

    3

    4

    3

    4

    3

    4

    3

    4

    3

    4

    Rated Insulation Voltage Ui(V)

    1000

    Rated Operation Voltage Ue(V)

    AC380、AC400、AC415

    AC380、AC400、AC415、AC660、AC690

    Rated Impulse Withstand Voltage Uimp(kV)

    8

    12

    Arc Distance(mm)

    50

    100

    Breaking Capacity Level

    L

    M

    H

    L

    M

    H

    L

    M

    H

    L

    M

    H

    L

    M

    H

    Ultimate Short-Circuit Breaking Capacity Icu(kA) AC380V/AC400V/AC415V

    10

    18

    25

    25

    36

    50

    36

    50

    70

    50

    70

    100

    50

    70

    100

    Service Short-Circuit Breaking Capacity Ics(kA) AC380V/AC400V/AC415V

    10

    18

    25

    25

    36

    50

    36

    50

    70

    50

    70

    100

    50

    70

    100

    Ultimate Short-Circuit Breaking Capacity Icu(kA) AC660V/AC690V

    -

    -

    -

    8

    10

    10

    10

    10

    10

    10

    15

    20

    15

    20

    20

    Service Short-Circuit Breaking Capacity Ics(kA) AC660V/AC690V

    -

    -

    -

    4

    5

    5

    5

    5

    5

    10

    15

    15

    13

    15

    15

    Operating Performance (operations)

    Energized

    1500

    1500

    1000

    1000

    500

    De-energized

    8500

    8500

    7000

    4000

    2500

    Total

    10000

    10000

    8000

    5000

    3000

    Protection Characteristics

    For Distribution Applications

    Rated Current (A)

    Thermal Trip Unit (Ambient Temp +40°C)

    Magnetic Trip Unit Operating Current (A)

    1.05In (Cold State) Non-Tripping Time (h)

    1.3In (Hot State) Tripping Time (h)

    10≤In≤63

    No Tripping Within 1 hour

    ≤1

    10In±20%
    160 Frame, 16-32A: 400A±20%

    63<In≤800

    No Tripping Within 2 hours

    ≤2

    For Motor Protection

    Rated Current (A)

    Thermal Trip Unit (Ambient Temp +40°C)

    Magnetic Trip Unit Operating Current (A)

    1.0In (Cold State) Non-Tripping Time (h)

    1.2In (Hot State) Tripping Time (h)

    1.5In (Hot State) Tripping Time (h)

    7.2In (Cold State) Tripping Time (s)

    Trip Level

    10≤In≤25

    No Tripping Within 2 hours

    ≤2

    ≤2min

    0.5s<Tp≤5s

    5

    12In±20%
    160 Frame, 16-32A: 400A±20%

    25<In≤250

    ≤4min

    4s<Tp≤10s

    10

    250<In≤800

    ≤8min

    6s<Tp≤20s

    20

    Circuit Breaker Classification

    • By Number of Poles: Three-Pole, Four-Pole
    • By Application: For Distribution, For Motor Protection
    • By Operating Method: Direct Handle Operation, Electric Operation (indicated by "p"), Rotary Handle Operation for Switchgear (indicated by "Z")

    Frequently Asked Questions

    What are the ambient temperature limits for operating this circuit breaker?
    The ambient air temperature upper limit is +40°C and the lower limit is -5°C. The average temperature over 24 hours must not exceed +35°C. For operations outside this range, please consult the manufacturer.
    What is the maximum installation altitude allowed?
    The circuit breaker is designed for installation at altitudes that do not exceed 2000 meters.
    Can this circuit breaker be installed horizontally?
    Yes, while vertical (upright) installation is standard, horizontal (flat-mounted) installation is also fully permissible.
    What do the letters "p" and "Z" indicate in the operating methods?
    The letter "p" indicates that the unit supports Electric Operation, while "Z" indicates that the unit is equipped with a Rotary Handle Operation design for switchgear.
    What is the rated insulation voltage (Ui) of this circuit breaker?
    The rated insulation voltage (Ui) for all models in this range is 1000V.

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