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标题:
EN60669-1 single pole switch has function insulation?
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作者:
志纤陶
时间:
2012-2-8 12:35
标题:
EN60669-1 single pole switch has function insulation?
请教, EN60669-1普通的单极开关有功能绝缘吗?
我觉得是没有的,它不象插座有L极,N极.
是这样理解吗?
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