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FAQ within [ Molded Case Circuit Breakers ]
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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
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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
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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
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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
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It is a protection method which only trips the related circuit breaker and other fault-free circuit does not trip and continues power supply in the event of... More Details >>
- No:22366
- Release Date:2018/08/31 14:33
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IEC 60947-2 is an international standard for circuit breakers. The rated voltage for the applicable circuit breaker is 1000V AC or less, or DC 1500V DC or le... More Details >>
- No:22361
- Release Date:2018/08/31 14:33
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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
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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
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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
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The range of ambient temperature is from -10 to 40 degree Celsius for not only MCCB but also including Earth Leakage Circuit breaker, Earth Leakage Relay and... More Details >>
- No:22352
- Release Date:2018/08/31 14:33
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