Basically you have to consider the effect of harmonic waves, but there are two ways as below. 1. Refer to the recommende

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

1. The internal resistance (per pole) is described in the catalog and technical notes. 2. Power consumption (W) = RI^2 x

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

It is the maximum voltage which meets the performance criteria for the rated operational voltage.

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

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

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

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

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

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Low-voltage Circuit Breakers

Miniature Circuit Breakers(2)

FAQ within [ Low-voltage Circuit Breakers ]

111-120 of Total 123

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How to select at Inverter circuit

Basically you have to consider the effect of harmonic waves, but there are two ways as below. 1. Refer to the recommended rated current by inverter manufactu... More Details >>
- No：22360
- Release Date：2018/08/31 14:33
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers
Calorific value of the circuit breaker

1. The internal resistance (per pole) is described in the catalog and technical notes. 2. Power consumption (W) = RI^2 x Poles = Resistance (Ω) x Load curre... More Details >>
- No：38025
- Release Date：2021/01/22 17:39
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers
Operational voltage

It is the maximum voltage which meets the performance criteria for the rated operational voltage. More Details >>
- No：22367
- Release Date：2018/08/31 14:33
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers
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
- Category： Molded Case Circuit Breakers

111-120 of Total 123

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