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    63 amp 1 pole Miniature Circuit Breaker

    $57.99
    Use a miniature circuit breaker in a low voltage electrical network. Low cost MCB with 63 amp current rating, used in AC 50Hz, 230/400V with a 6 kA short circuit withstand rating, is more sensitive to overcurrent and a reliable way to protect conductors.
    SKU: ATO-MCB-1P63
    Free Shipping Worldwide
    Delivery date: 6-12 days

    ATO 1 pole 63 amp MCB miniature circuit breaker is an electrical switch to turn off the electrical circuit during a faulty condition to protect conductors.

    Circuit Breaker Information

    • Rated Current: 63 amp
    • Rated Voltage: 230/400V AC, 50Hz
    • Number of poles: 1 pole
    • 6 kA short circuit interrupting capacity
    • Accordance with IEC standard
    • C curve trip characteristic gives you the ability to configure the exact protection scheme you required

    Technical Data

    Model ATO-NB8-631PC63
    Electrical Parameters Height 86 mm
    Width 18 mm per pole
    Mounting DIN Rail
    Rated Current (In) 63A
    Number of poles 1P
    Rated Voltage (Ue) 230/400V
    Rated Insulation Voltage (Ui) 500V
    Dielectric Test Voltage 2000V
    Reted Frequency 50Hz
    Short Circuit Interrupting Capacity 6KA
    Trip Characteristic C Curve (5-10In)
    Rated Short-Circuit Breaking Capacity 6000A
    Operating Short-Circuit Breaking Capacity 6000A
    Mechanical Parameters Electrical Life 10000 times
    Mechanical Life 20000 times
    Flame Retardant Grade V0
    Protection Degree Direct installation: IP20B
    Installed in the distribution box: IP40B
    Calibration Temperature 30℃
    Operating Temperature -35℃~+70℃
    Storage Temperature -35℃~+85℃
    Tightening Torque 2 N.m
    Max. Tolerable Torque 2.5 N.m
    Terminal Size Acceptability–Min/Max 1 mm2 / 25mm2
    Wire Insertion Depth 13mm

    Circuit Breaker Dimension (Unit: mm)

    63 amp 1 pole Miniature Circuit Breaker Dimensions

    Tips: Overload protection of miniature circuit breaker

    The overload protection function of the miniature circuit breaker is based on the principle that the bimetal is oriented and bent regularly as the temperature rises. After the miniature circuit breaker is closed, in the normal working state, the internal bimetallic sheet generates heat due to a certain current passing through it. The two pieces of metal have different coefficients of thermal expansion and cause bending. The bending angle of the normal current (1.13In) is not large, so the thrust is not enough to trip the tripping mechanism. When the line is generally overloaded and the overload current (1.45In) is reached, the large bending angle of the bimetal touches the lever in the tripping mechanism, and the thrust is sufficient to push the tripping mechanism, so that the miniature circuit breaker trips and plays a role of overload protection. The magnitude of the current flowing through the MCB is different, and the degree of bending of the bimetallic sheet is also different. When the circuit is generally overloaded, the tripping time of the circuit breaker is generally longer because the overload current is not too large. The standard trip current is 1.45 times the rated current. The trip time should be within 1 hour.

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