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

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

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

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

It means that it does not interfere with tripping operation even if a handle is held at "ON" position. (It trips when an

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

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

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

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

FAQ

FAQAbout Products

Font Size
S
M
L

FAQ > Low-voltage Power Distribution Products > Low-voltage Circuit Breakers > Molded Case Circuit Breakers

FAQ

Inquiries

Keyword Search

You can search two or more words separated by a space.

 AND : Put a space between the words in a keyphrase.
 OR  : Add a vertical bar ( | ) between the words in a keyphrase.
 NOT : Add a minus sign ( - ) followed by the words that you would like to exclude.

Result Type

Text Search

FAQ within [ Molded Case Circuit Breakers ]

1-10 of Total 49

prev 1 / 5page next

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
Rear stud (B-ST) installed

B-ST is possible. More Details >>
- No：24814
- Release Date：2019/04/09 15:17
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
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 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
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
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 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
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
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

1-10 of Total 49

Inquiries

page top