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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 ]
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3P MCCB in 1-phase 2-wire circuit
It is possible. Refer to the figure for connection as below. More Details >>
- No:24811
- Release Date:2019/04/09 15:18
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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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AC Breakers used at DC circuit
It is not possible to use a circuit breaker for AC in DC circuit. Since the Arc-Extinguishing Device structure of circuit breaker for DC is different from th... More Details >>
- No:22381
- Release Date:2018/08/31 14:33
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Operating ambient temperature is set to - 10℃ to 40℃. ( However, its average over a period of 24h does not exceed 35℃.) In the case that the ambient temperat... More Details >>
- No:22370
- Release Date:2018/08/31 14:33
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A circuit breaker must have interrupting ratings. These are classified as rated short-circuit breaking capacities in IEC 60947-2.e rated ultimate short-circu... More Details >>
- No:22341
- Release Date:2018/08/31 14:33
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It is a method which breaks short circuit current with both upstream and downstream circuit breakers. For example, in the case that short circuit current at ... More Details >>
- No:22357
- 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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Almost MCCBs can be connected n reverse. Check the item column of specification table "reverse connection" in the catalog. If it says "Possible", MCCB can be... More Details >>
- No:22442
- Release Date:2018/08/31 14:33
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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
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Electronic MCCB 400-1600A How to change rated current and characteristic curve (Except CE breakers)
First, turn OFF the upstream circuit breaker and the relevant circuit breaker. You must not work in the state where voltage is applied to the relevant circui... More Details >>
- No:22439
- Release Date:2018/08/31 14:33
- Update:2018/08/31 14:35
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