Features:The insulation class is B; the protective class is IP44.
特点：绝缘等级为B级，外壳防护等级为IP44。
There are oil-proof grommets between cover and body, that can reach protective class IP65.
箱盖与箱体之间夹有耐油橡胶胶条，可保证防护等级达到“IP65”。
There are oil-proof grommets between cover and body, that can reach protective class IP65.
箱盖与箱体之间夹有耐油橡胶胶条，可保证防护等级达到“IP65”。
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