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| NB/T 10331-2019 Multi-function commutation switch (English Version) |
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Detail of NB/T 10331-2019
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Introduction of NB/T 10331-2019
本标准适用于额定频率 50 Hz，额定电压不超过 440 V，额定电流不超过 250 A 的多功能换相切换开关。
本标准规定了多功能换相切换开关的范围、术语、分类、特性、产品资料、正常的使用和安装条件、结构和性能要求以及试验方法。
Contents of NB/T 10331-2019