13型外壳适用于工业室内使用，主要提供一定程度的防尘，防水，防油和非腐蚀性冷却液的防护。

Type 13 enclosures are intended for industrial indoor use primarily to provide a degree of protection against dust, spraying of water, oil, and noncorrosive coolant.

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一体化拉伸铝鱼鳍型散热器的外壳设计，特制防水胶贴杜绝渗漏；

The shell design of integral stretched aluminum fin-type radiator, specially made waterproof glue to avoid leakage.

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型：采用工程塑料压制而成，具有较强的防腐和防水性能，适用于增安型外壳中作引入装置用。

Type I: Made of engineering plastic, corrosion-proof and water-proof, it is used as leading device in safety-increased shell.

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