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FAQ within [ Molded Case Circuit Breakers ]

21-30 of Total 49

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  • 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
  • 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
  • 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
  • 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
  • Use in 40℃~60℃

    Operating ambient temperature is set to - 10℃ to 40℃. ( However, its average over a period of 24h does not exceed 35℃.) In the case that the ambient temperat... More Details >>

    • No:22370
    • 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
  • 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
  • Switch disconnector

    Switch disconnector is a switch compatible with IEC 60947-3 standard, and it has no overcurrent tripping element. Please use it as a switch with large switch... More Details >>

    • No:22379
    • 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

21-30 of Total 49

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