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FAQ within [ Low-voltage Circuit Breakers ]
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UVT is an internal accessory which trips a circuit breaker in the case that circuit voltage decreases from 70% to 35% or less, and turns it "ON" after resett... More Details >>
- No:22349
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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Rated current and continuous current
The rated current is standard value for continuous current, short time delay current and instantaneous current. Continuous current is non-breaking current (c... More Details >>
- No:22371
- Release Date:2018/08/31 14:33
- Category: Air Circuit Breakers
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A shunt trip (SHT) is an internal accessory which electrically and remotely trips a circuit breaker. When the supply voltage of the SHT is remained between 7... More Details >>
- No:22342
- Release Date:2018/08/31 14:33
- Category: Accessories and Related Components
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It is special relay characteristic for selective co-ordination. When closing ACB (changing from OFF to ON), the instantaneous tripping characteristic is effe... More Details >>
- No:22402
- Release Date:2018/08/31 14:33
- Category: Air Circuit Breakers
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It is a button in order to mechanically trip a circuit breaker outside. It is used to confirm switching mechanism at the regular maintenance or sequence-chec... More Details >>
- No:22368
- Release Date:2018/08/31 14:33
- Category: Molded Case Circuit Breakers
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Ground fault protection (GFR) is prepared as option, it is possible to detect and protect against ground fault current. "Trip" or "Alarm signal output" can b... More Details >>
- No:22412
- Release Date:2018/08/31 14:33
- Category: Air Circuit Breakers
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Drawout type circuit breaker can be drawn-out and insert to the cradle without taking out the connecting conductor. As ACB is drawn out, it will be "connect ... More Details >>
- No:22431
- Release Date:2018/08/31 14:33
- Category: Air Circuit Breakers
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Rating of a circuit breaker for transformers primary protection
When making a transformer to energize, a large inrush current may flow. The circuit breaker is therefore required to prevent unwanted trip. The selection of ... More Details >>
- No:22343
- Release Date:2018/08/31 14:33
- Category: Molded Case 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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The test position is a position where a main circuit is in the "disconnected" state and only control circuit is in the "connected" state. Control circuit che... More Details >>
- No:22405
- Release Date:2018/08/31 14:33
- Category: Air Circuit Breakers
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