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    40 amp 2 pole Miniature Circuit Breaker

    5 out of 5 based on 1 reviews | Write a review
    $63.99
    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

    Double pole 40 amp miniature circuit breaker (MCB) offers essential overload and short-circuit protection. This micro circuit breaker is commonly used for branch circuit protection in residential electrical installations, providing safety for air conditioners, electric water heaters, or kitchen appliances.

    Double Pole MCB Breaker Information

    • Rated Current: 40 amp
    • Rated Voltage: 230/400V AC, 50Hz
    • Number of poles: 2 poles
    • 6 kA rated short-circuit breaking capacity
    • Compliant with IEC standard
    • C curve trip characteristic
    • With overload protection and short circuit protection function

    Technical Data

    Model ATO-NB8-632PC40
    Rated Current 40A
    Rated Voltage 230/400V
    Frequency 50Hz
    Number of Poles 2P
    Mechanical Life 20000 Times
    Electrical Life 10000 Times
    Rated Short-Circuit Breaking Capacity 6000A
    Operating Short-Circuit Breaking Capacity 6000A
    Rated Impulse Withstand Voltage (1.2/50) 6kV
    Dielectric Test Voltage 2000V (50Hz, 1 min)
    Heat & Humidity Resistance 28 Cycles
    Vibration Resistance No Obvious Vibration and Impact
    Terminal Block Terminal Block Type Pillar Terminal Block
    Min. Terminal Size Acceptability 1mm2
    Max. Terminal Size Acceptability 25mm2
    Standard Connection Torque 2 N.m
    Max. Tolerable Torque 2.5 N.m
    Wire Insertion Depth 13mm
    Reference Temperature 30℃
    Operating Temperature -35℃~+70℃
    Storage Temperature 35℃~+85℃
    Applicable Altitude 2000m
    Tripping Mode Thermal Magnetic Trip
    Electromagnetic Tripping Type Type C (5In-10In)
    Shell Flame Retardant Grade V0
    Wire Entry Method Both Upper and Lower
    Installation Method TH35-7.5 Standard Rail
    Protection Level Direct Installation IP20B
    Installed in the Distribution Box IP40B


    Double Pole MCB Breaker Dimensions (Unit: mm)

    40 amp 2 pole Miniature Circuit Breaker Dimensions

    Details

    2 pole Miniature Circuit Breaker Details

    Tips: Troubleshooting of miniature circuit breaker

    1. The inlet and outlet connections of the mini 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 on 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, 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.

    Types of Circuit Breakers

    In this video, we'll take a closer look at the meaning behind these abbreviations and explain the types of circuit breakers they represent. By understanding the different types of circuit breakers on the market, you can make an informed decision and choose the right type for your specific requirements, thereby enhancing the protection of your electrical infrastructure.

    Isolator vs Circuit Breaker

    Although isolators and circuit breakers have similar functions in a circuit, they are two separate entities. This video explains you the difference between the two devices in terms of working, features, operation, affordability, etc. You can choose between them based on your specific requirements.

    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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