The permanent magnet actuator(PMA) is a new kind of mechanism which can hold the breaker at opening and closing positions through permanent magnet and it can be controlled with electronics as well.
英
美
- 永磁機構是一種通過(guò)永磁保持、電子控制的新型操動(dòng)機構，具有高可靠、免維護和智能化的優(yōu)點(diǎn)，成為真空斷路器操動(dòng)機構發(fā)展的熱點(diǎn)，其性能的優(yōu)劣嚴重影響斷路器的開(kāi)斷性能。
