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FAQ within [ Low-voltage Circuit Breakers ]
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lower limit of operational voltage for DC
It is DC 24V. More Details >>
- No:24816
- Release Date:2019/04/09 15:17
- Category: Molded Case Circuit Breakers
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When Power-Fuse (PF) is used as a high-voltage side protection device, coordination with MCCBs on the secondary side shall be achieved. Therefore, MCCB has l... More Details >>
- No:22403
- Release Date:2018/08/31 14:33
- Category: Circuit Breakers for Use in Particular Applications
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Residual non-operating current
It is a current that does not leak-trip even if there is ground fault current or leakage current. In the standard, it is 50 % of the rated residual operating... More Details >>
- No:22356
- Release Date:2018/08/31 14:33
- Category: Earth Leakage 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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Pre-Alarm is a function which outputs an alarm if the load current exceeds setting current value. This is useful for securing continuous power supply and pre... More Details >>
- No:22376
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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EAL (Earth Leakage Alarm switch) is a switch that electrically displays tripping state of Earth Leakage Circuit Breaker by eartheleakage/ground fault. EAL do... More Details >>
- No:22404
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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The operating handle is an external accessory for a circuit breaker and there is no safety standard for the operating handle itself. Therefore, there is no C... More Details >>
- No:22408
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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Fixed-type and Adjustable-type of V-type Operating handle
For Fixed type, the depth from the circuit breaker mounting surface to the panel board front is fixed. Adjustable-type is used when the depth from the circui... More Details >>
- No:22433
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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"b contact" is normally closed contact, and It is also called "NC (Normally Closed) contact". More Details >>
- No:22435
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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(1) and (2) are impossible. More Details >>
- No:24818
- Release Date:2019/04/09 15:03
- Category: Air Circuit Breakers
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