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    20A 3 pole 5kA Miniature Circuit Breaker

    5 out of 5 based on 1 reviews | Write a review
    Three pole UL 1077 DIN rail mountable miniature circuit breaker is rated at 277/480V AC supply with 5kA short circuit breaking capacity. Three levels of short-circuit protection, available with B curve, C curve or D curve trip characteristics.
    SKU: ATO-MCB-3P20
    This product has a minimum quantity of 30
    Free Shipping Worldwide
    Delivery date: 6-12 days

    Circuit Breaker Information

    • Model: ATOCLXB3-20
    • Rated Current: 20 amp
    • Rated Voltage: 277/480V AC, 50Hz/ 60Hz
    • Number of poles: 3 pole
    • 5 kA short circuit interrupting capacity
    • Complete range of UL 1077 listed and 35mm DIN rail mounted
    • It can be manually switched ON and OFF as similar to normal switch if necessary
    • Thermal-magnetic overcurrent protection, three levels of short circuit protection, categorized by B, C and D curves

    Technical Data

    Standard Certifications IEC UL1077
    Electrical Parameters Height 86 mm
    Width 18 mm per pole
    Mounting DIN Rail
    Rated Current (In) 1A, 2A, 3A, 4A, 6A, 10A, 13A, 16A, 20A, 25A, 32A, 40A, 50A, 63A (Available)
    Number of poles 1P, 2P, 3P, 4P (Available)
    Rated Voltage (Ue) (Optional) 240/415V or 230/400V 277/480V
    Rated Insulation Voltage (Ui) 500V
    Reted Frequency 50Hz/60Hz
    Short Circuit Interrupting Capacity (Optional) 6/10KA 5KA
    Trip Characteristic (Optional) B Curve (3-5In) B Curve (4In)
    C Curve (5-10In) C Curve (7In)
    D Curve (10-20In) D Curve (14In)
    Mechanical Parameters Electrical Life 8000 times
    Mechnical Life 10000 times
    Protection Degree IP20
    Calibration Temperature 30
    Operating Temperature -5℃~+40℃
    Storage Temperature -25℃~+70℃
    Tightening Torque 22 Ib-in (2 Nm)
    Terminal Size Acceptability–Min/Max 2.5 mm(12 AWG) / 25mm(3 AWG)

    Circuit Breaker Dimension (Unit: mm)

    circuit breaker dimensionTips: Motor protection circuit breaker selection
    There are two features for motor as follows: Firstly, starting current is several times of rated current. Secondly, it has certain overload capacity. In order to ensure motor operation is reliable, circuit breaker should be chosen in accordance with these two features of motor.
    How to choose a motor protective circuit breaker?

    1. The long time delay action current setting value is determined by the rated current of motor.
    2. The returnable time of 6 times of long time delay action current setting value of circuit breaker is larger than the actual starting time of motor.
    3. Instantaneous action current setting value of circuit breaker: Cage motor should be 8 to 15 times as large as the rated current of releaser; winding motor should be 3 to 6 times as large as the rated current of releaser.
    Existing reviews of 20A 3 pole 5kA Miniature Circuit Breaker
    Good circuit breaker and arrived on time.
    Good circuit breaker and arrived on time. I installed it for heat pump as the old one was burnt. Works fine and no issues so far.
    From: Jules G. | Date: 05/11/2018
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