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    40 amp 2 pole Miniature Circuit Breaker

    5 out of 5 based on 1 reviews | Write a review
    Favorable price 2 pole 40 amp miniature circuit breaker meets IEC standard, C curve trip characteristic, max. tolerable torque up to 2.5Nm. MCB mini circuit breaker is used for providing the supplementary protection for the electrical equipment with a 6 kA short circuit interrupting capacity.
    SKU: ATO-MCB-2P40
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    2 pole 40 amp miniature circuit breaker provides overload and short circuit protection, which is commonly used for branch circuit protection in residential.

    Circuit Breaker Information

    • Rated Current: 40 amp
    • Rated Voltage: 230/400V
    • Number of pole: 2 poles
    • 6 kA short circuit breaking capacity
    • Compliance with IEC standard
    • C curve trip characteristic gives you the ability to configure the exact protection scheme you required.

    Technical Data

    Model ATO-NB8-632PC40
    Electrical Parameters Height 86 mm
    Width 18 mm per pole
    Mounting DIN Rail
    Rated Current (In) 40A
    Number of poles 2P
    Rated Voltage (Ue) 230/400V
    Rated Insulation Voltage (Ui) 500V
    Dielectric Test Voltage 2000V
    Rated 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 Dimensions (Unit: mm)

    40 amp 2 pole Miniature Circuit Breaker Dimensions


    2 pole Miniature Circuit Breaker Details

    Tips: Troubleshooting of miniature circuit breaker

    1. The inlet and outlet connections of the miniature circuit breaker are directly tightened with bolts. In situations where the load changes greatly, they are not checked and tightened in time, resulting in poor local contact.
    2. It is used in occasions with high inrush current, such as computer and classroom control switches. And there are often phenomena such as closing and tripping and mechanism failure.
    3. The contacts of individual miniature circuit breakers are oxidized, causing contact failure. In the home power distribution installation, in order to meet the requirements of large variable loads, the rated capacity of the main power switch should be a larger miniature circuit breaker, and the leakage protection device should be matched. The miniature circuit breaker of the output branch should be selected according to the actual calculated load capacity.
    Existing reviews of 40 amp 2 pole Miniature Circuit Breaker
    Good value for what it costs.
    I used this 2 pole miniature circuit breaker for a generator to replace an older breaker. The DIN mounting system is excellent. Very prompt delivery after ordering. I am happy with this purchase and definitely buy again.
    From: Richard J. | Date: 23/05/2022
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