NEMA 4 与 4X 外壳 – 4 个区别、用途和常见问题
Do you know what NEMA is? Basically, the word NEMA stands for National Electrical Manufacturers Association. This organization is responsible for designing the standard ratings of electrical enclosures which are manufactured in factories all over the world. It tells us about their protection level against water, dust and rust. Today, we will break down the […]
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