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

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

When making a transformer to energize, a large inrush current may flow. The circuit breaker is therefore required to pre

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

If switching of neutral pole is not needed, it is possible to use 3-pole MCCB for 3-phase 4- wire circuit. Generally, it

It means a space between the edge of a exhaust port and panel component ( such as wall or duct) of a circuit breaker. Th

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

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

You can calculate that with MELSHORT 2 (Free of charge).

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

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FAQ within [ Molded Case Circuit Breakers ]

31-40 of Total 49

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Plug-in type NF1600-SEW produced

It is impossible. More Details >>
- No：24817
- Release Date：2019/04/09 15:16
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
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
Rating of a circuit breaker for transformers primary protection

When making a transformer to energize, a large inrush current may flow. The circuit breaker is therefore required to prevent unwanted trip. The selection of ... More Details >>
- No：22343
- 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 3P4W 3P use

If switching of neutral pole is not needed, it is possible to use 3-pole MCCB for 3-phase 4- wire circuit. Generally, it is recommended to use 4-pole circuit... More Details >>
- No：22385
- Release Date：2018/08/31 14:33
Arc space

It means a space between the edge of a exhaust port and panel component ( such as wall or duct) of a circuit breaker. The arc space is needed for smoothly di... More Details >>
- No：22373
- 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
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
Short circuit current calculation software

You can calculate that with MELSHORT 2 (Free of charge). More Details >>
- No：22394
- Release Date：2018/08/31 14:33

31-40 of Total 49

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