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FAQ within [ Molded Case Circuit Breakers ]

11-20 of Total 49

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  • 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
  • MCCB and MCB as terms

    MCCB stands for "Molded Case Circuit Breaker." This is defined in the IEC standard, IEC 60947-2 and in the UL standard, UL 489. MCB stands for "Miniature Ci... More Details >>

    • No:22340
    • Release Date:2018/08/31 14:33
  • 3P MCCB in 1-phase 2-wire circuit

    It is possible. Refer to the figure for connection as below. More Details >>

    • No:24811
    • Release Date:2019/04/09 15:18
  • Change Electronic relay characteristics when it is energized

    Only electricians who have enough technical knowledge should change the setting of overcurrent tripping and earth leakage tripping characteristics. Moreover,... More Details >>

    • No:22409
    • 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
  • 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
  • Selective coordination

    It is a protection method which only trips the related circuit breaker and other fault-free circuit does not trip and continues power supply in the event of... More Details >>

    • No:22366
    • Release Date:2018/08/31 14:33
  • Calorific value of the circuit breaker

    1. The internal resistance (per pole) is described in the catalog and technical notes. 2. Power consumption (W) = RI^2 x Poles = Resistance (Ω) x Load curre... More Details >>

    • No:38025
    • Release Date:2021/01/22 17:39
  • Degree of protection

    In order to prevent breakdowns and human injuries, it is necessary to select a control device having protection structure suitable for each purpose. The prot... More Details >>

    • No:22443
    • Release Date:2018/08/31 14:33
  • Inst tripping current value of AC/DC common breaker

    At time-delay tripping zone, it operates with bimetal, therefore the characteristics of AC and DC should be same if the effective values of them are same. Ho... More Details >>

    • No:22392
    • Release Date:2018/08/31 14:33

11-20 of Total 49

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