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FAQ within [ Low-voltage Circuit Breakers ]
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The number of trip durability by using SHT and UVT is 10% of the opening/closing number including the number of trips by overcurrent, trip button and test bu... More Details >>
- No:22407
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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MCCB, ELCB and ACB at higher altitudes
In that case, the rated current and the rated voltage shall be reduced. Refer to the table of derating factors as below. More Details >>
- No:24801
- Release Date:2019/04/09 15:17
- Category: Molded Case Circuit Breakers
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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
- Category: Molded Case Circuit Breakers
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It is possible to modify to Rear-connection type by Mitsubishi's certified staff. More Details >>
- No:22399
- Release Date:2018/08/31 14:33
- Category: Molded Case Circuit Breakers
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SHT has a burning prevention switch and it does not burn even if external switch remains "ON" state (After the circuit breaker trips, a burning prevention sw... More Details >>
- No:22355
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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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
- Category: Molded Case Circuit Breakers
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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
- Category: Molded Case Circuit Breakers
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Earth Leakage Circuit Breaker and Earth Leakage Relay operate at higher than 50% but not exceeding 100% of the rated residual operating current IΔn. The eart... More Details >>
- No:22364
- Release Date:2018/08/31 14:33
- Category: Earth Leakage Circuit Breakers
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Earth leakage protective coordination
Since the total electric circuit length of upstream circuit breaker side is longer than that of downstream circuit breaker, constant earth leakage current b... More Details >>
- No:22369
- Release Date:2018/08/31 14:33
- Category: Earth Leakage Circuit Breakers
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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
- Category: Molded Case Circuit Breakers
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