The performance of circuit breaker operating mechanisms is decisive for reliable and safe power supply. While various mechanisms each have their advantages, the emergence of a new type does not completely replace traditional ones. For example, despite the rise of eco-friendly gas insulation, solid insulation ring main units still hold about 8% of the market, showing new technologies rarely fully displace existing solutions.The permanent magnet actuator (PMA) consists of permanent magnets, a clos
10/23/2025
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