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FAQ within [ Molded Case Circuit Breakers ]

1-10 of Total 49

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  • Ambient temperature

    The range of ambient temperature is from -10 to 40 degree Celsius for not only MCCB but also including Earth Leakage Circuit breaker, Earth Leakage Relay and... More Details >>

    • No：22352
    • Release Date：2018/08/31 14:33

  • How to use Trip button

    It is a button in order to trip MCCB. It is used for regular inspection of the switching mechanism, and trip condition of MCCB when Alarm switch (AL) and Shu... More Details >>

    • No：22444
    • Release Date：2018/08/31 14:33

  • Minimum operating voltage

    Use with 24V, 0.5A or more for AC and DC in normal use. If the breakers are used less than 24V, use with 6V, 1A or more. Moreover, regular inspection of is ... More Details >>

    • No：22401
    • Release Date：2018/08/31 14:33

  • Trip button

    It is a button in order to mechanically trip a circuit breaker outside. It is used to confirm switching mechanism at the regular maintenance or sequence-chec... More Details >>

    • No：22368
    • Release Date：2018/08/31 14:33

  • degrees of protection to　 IEC60529

    The degess of protection for ACB is IP20 as standard (under the condition that front door is closed). For MCCB and ELCB, the degrees of protection can be IP2... More Details >>

    • No：24812
    • Release Date：2019/04/09 15:18

  • MCCB Reverse connection

    Almost MCCBs can be connected n reverse. Check the item column of specification table "reverse connection" in the catalog. If it says "Possible", MCCB can be... More Details >>

    • No：22442
    • Release Date：2018/08/31 14:33

  • Electronic MCCB 400-1600A How to change rated current and characteristic curve (Except CE breakers)

    First, turn OFF the upstream circuit breaker and the relevant circuit breaker. You must not work in the state where voltage is applied to the relevant circui... More Details >>

    • No：22439
    • Release Date：2018/08/31 14:33
    • Update：2018/08/31 14:35

  • Inverse time delay operating characteristic

    It is a characteristic that operating time inversely become shorter as current increases. For Molded Case Circuit Breakers, protection characteristic meeting... More Details >>

    • No：22387
    • Release Date：2018/08/31 14:33

  • Arc space

    It means a space between the edge of a exhaust port and panel component ( such as wall or duct) of a circuit breaker. The arc space is needed for smoothly di... More Details >>

    • No：22373
    • Release Date：2018/08/31 14:33

  • Cascade breaking

    It is a method which breaks short circuit current with both upstream and downstream circuit breakers. For example, in the case that short circuit current at ... More Details >>

    • No：22357
    • Release Date：2018/08/31 14:33

1-10 of Total 49

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