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FAQ within [ Molded Case Circuit Breakers ]

1-10 of Total 49

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  • 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

  • Front to rear connection

    It is possible to modify to Rear-connection type by Mitsubishi's certified staff. More Details >>

    • No：22399
    • Release Date：2018/08/31 14:33

  • MCCB 3P4W 3P use

    If switching of neutral pole is not needed, it is possible to use 3-pole MCCB for 3-phase 4- wire circuit. Generally, it is recommended to use 4-pole circuit... More Details >>

    • No：22385
    • Release Date：2018/08/31 14:33

  • Plug-in type NF1600-SEW produced

    It is impossible. More Details >>

    • No：24817
    • Release Date：2019/04/09 15:16

  • Operational voltage

    It is the maximum voltage which meets the performance criteria for the rated operational voltage. More Details >>

    • No：22367
    • Release Date：2018/08/31 14:33

  • Default setting of electronic breakers

    Each setting knob of the overcurrent trip characteristic is set to the maximum value and then shipped if not specified. However, only the pre-alarm is set to... More Details >>

    • No：22438
    • Release Date：2018/08/31 14:33

  • LTD operating characteristic

    It is overcurrent tripping characteristic zone which exceeds the rated current and does not exceed short time tripping zone (If without short time tripping ,... More Details >>

    • No：22384
    • Release Date：2018/08/31 14:33

  • Trip free

    It means that it does not interfere with tripping operation even if a handle is held at "ON" position. (It trips when an overcurrent flows even if a handle i... More Details >>

    • No：22378
    • Release Date：2018/08/31 14:33

  • Rated insulation voltage

    It is voltage which ensures withstand voltage and it is used as basis to determine insulation distance. More Details >>

    • No：22362
    • 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

1-10 of Total 49

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