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FAQ within [ Molded Case Circuit Breakers ]

1-10 of Total 49

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  • 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

  • How to select at Inverter circuit

    Basically you have to consider the effect of harmonic waves, but there are two ways as below. 1. Refer to the recommended rated current by inverter manufactu... More Details >>

    • No：22360
    • Release Date：2018/08/31 14:33

  • How to connect to 2-pole breaker

    (1) When "N" is marked on the breaker,connect the N phase wire as marked. (2) When "N" is not marked on the breaker, N phase wire can be connected to eith... More Details >>

    • No：37700
    • Release Date：2020/01/17 08:58

  • Plug-in type NF1600-SEW produced

    It is impossible. More Details >>

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

  • Setting change operation while power is on

    It is forbidden to change the characteristic when the breaker ON. Over current trip and earth leakage trip characteristics should be changed by a person with... More Details >>

    • No：37699
    • Release Date：2020/01/18 09:58

  • 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

  • lower limit of operational voltage for DC

    It is DC 24V. More Details >>

    • No：24816
    • Release Date：2019/04/09 15:17

  • 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

  • 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

1-10 of Total 49

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