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plastic insulator /ˈplastɪk ˈɪnsjuːlˌeɪtə/ n

中文：塑料绝缘板

中文 · 塑料绝缘板Español · aislante plásticoFrançais · isolant en plastique
Meaning：Plate made of nonconductive material preventing the hot bus bars from coming in contact with the back of the panel.
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Circuit breaker panel

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