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

Large electromagnetic force will be generated between conductors/wires due to fault currents. To prevent deformation and

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

IEC 60947-2 is an international standard for circuit breakers. The rated voltage for the applicable circuit breaker is 1

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

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

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

It is a tripping zone which instantly trips, when significantly overcurrent such as short-circuit currents flow.

It is the number that can be opened/closed per hour under the conditions specified in the standard.

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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
How to fix conductors/wires

Large electromagnetic force will be generated between conductors/wires due to fault currents. To prevent deformation and breakage of circuit breakers and con... More Details >>
- No：22424
- 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
IEC60947-2 standard

IEC 60947-2 is an international standard for circuit breakers. The rated voltage for the applicable circuit breaker is 1000V AC or less, or DC 1500V DC or le... More Details >>
- No：22361
- 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
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
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
Instantaneous tripping

It is a tripping zone which instantly trips, when significantly overcurrent such as short-circuit currents flow. More Details >>
- No：22363
- Release Date：2018/08/31 14:33
Operating cycles

It is the number that can be opened/closed per hour under the conditions specified in the standard. More Details >>
- No：22436
- Release Date：2018/08/31 14:33

21-30 of Total 49

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