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FAQ within [ Molded Case Circuit Breakers ]
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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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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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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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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
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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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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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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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It is a tripping zone which instantly trips, when significantly overcurrent such as short-circuit currents flow. More Details >>
- No:22363
- Release Date:2018/08/31 14:33
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Plug-in type NF1600-SEW produced
It is impossible. More Details >>
- No:24817
- Release Date:2019/04/09 15:16
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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
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