Operating characteristics described in our catalog (if there is no "Note" particularly) mean operating time when it star

No, you must not use 2-pole circuit breaker as 1-pole circuit breaker (series connection as only single phase ). If usin

Bar terminal material for 400A is aluminum alloy, and for 630A or higher is copper.

It is a button in order to trip MCCB. It is used for regular inspection of the switching mechanism, and trip condition o

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

Only electricians who have enough technical knowledge should change the setting of overcurrent tripping and earth leakag

The degess of protection for ACB is IP20 as standard (under the condition that front door is closed). For MCCB and ELCB,

It is overcurrent tripping characteristic zone which exceeds the rated current and does not exceed short time tripping z

In order to prevent breakdowns and human injuries, it is necessary to select a control device having protection structur

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FAQ within [ Molded Case Circuit Breakers ]

21-30 of Total 49

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Hot start characteristics

Operating characteristics described in our catalog (if there is no "Note" particularly) mean operating time when it starts to carry current from the conditio... More Details >>
- No：22374
- Release Date：2018/08/31 14:33
2P MCCB only 1-pole use

No, you must not use 2-pole circuit breaker as 1-pole circuit breaker (series connection as only single phase ). If using it as 1-pole circuit breaker, these... More Details >>
- No：22382
- Release Date：2018/08/31 14:33
MCCB bar terminal material

Bar terminal material for 400A is aluminum alloy, and for 630A or higher is copper. More Details >>
- No：24819
- Release Date：2019/04/09 15:13
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
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
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
lower limit of operational voltage for DC

It is DC 24V. More Details >>
- No：24816
- Release Date：2019/04/09 15:17
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
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
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

21-30 of Total 49

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