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

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

A circuit breaker shall be Trip position when installing Cassette type accessory. The breaker may be damaged if installi

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

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

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

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

It is from -25 to 55℃ in Trip or OFF position. However, it shall be in an environment without condensation and freezing

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

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FAQ within [ Molded Case Circuit Breakers ]

1-10 of Total 49

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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
Plug-in type NF1600-SEW produced

It is impossible. More Details >>
- No：24817
- Release Date：2019/04/09 15:16
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 install cassette type accessories

A circuit breaker shall be Trip position when installing Cassette type accessory. The breaker may be damaged if installing in "ON" or "OFF" position. Moreove... More Details >>
- No：22422
- 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
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
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
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
Storage temperature range of MCCBs and ELCBs

It is from -25 to 55℃ in Trip or OFF position. However, it shall be in an environment without condensation and freezing even in a short time. More Details >>
- No：22426
- 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

1-10 of Total 49

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