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 not possible to use a circuit breaker for AC in DC circuit. Since the Arc-Extinguishing Device structure of circui

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

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

At time-delay tripping zone, it operates with bimetal, therefore the characteristics of AC and DC should be same if the

Basically you have to consider the effect of harmonic waves, but there are two ways as below. 1. Refer to the recommende

It is a protection method which only trips the related circuit breaker and other fault-free circuit does not trip and co

Each setting knob of the overcurrent trip characteristic is set to the maximum value and then shipped if not specified.

It may not trip a fault current or degrade insulation after tripping. When you connect the device in reverse, you must s

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FAQ within [ Molded Case Circuit Breakers ]

21-30 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
AC Breakers used at DC circuit

It is not possible to use a circuit breaker for AC in DC circuit. Since the Arc-Extinguishing Device structure of circuit breaker for DC is different from th... More Details >>
- No：22381
- 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
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
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
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
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
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
Wrong connection in reverse

It may not trip a fault current or degrade insulation after tripping. When you connect the device in reverse, you must select a reverse-connectable model. More Details >>
- No：22345
- 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

21-30 of Total 49

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