When it is connected as special connection, AC/DC compatible circuit breaker can be used with DC 250V or more (3-pole ty

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

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

Switch disconnector is a switch compatible with IEC 60947-3 standard, and it has no overcurrent tripping element. Please

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

(1) When "N" is marked on the breaker,connect the N phase wire as marked. (2) When "N" is not marked on the breake

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

In that case, the rated current and the rated voltage shall be reduced. Refer to the table of derating factors as below.

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

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

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FAQ within [ Molded Case Circuit Breakers ]

31-40 of Total 49

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Max. operational voltage for AC/DC Common

When it is connected as special connection, AC/DC compatible circuit breaker can be used with DC 250V or more (3-pole type is DC400V and 4-pole type is DC500... More Details >>
- No：22445
- 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
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
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
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
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
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
MCCB, ELCB and ACB at higher altitudes

In that case, the rated current and the rated voltage shall be reduced. Refer to the table of derating factors as below. More Details >>
- No：24801
- Release Date：2019/04/09 15:17
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
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

31-40 of Total 49

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