In fact, the difference between industrial plug and ordinary plug is very obvious. We can observe it from their appearance alone. Ordinary plug is often seen in our daily life for two plugs, three plugs (one of which is the grounding terminal), and industrial plug is not like this. In order to meet the high operating power of large industrial equipment, only two plugs and three plugs can not carry the current flowing through, so industrial plugs are three-phase four plug.

In other words, most of the plug is suitable for household appliances, such as the plug of ordinary household appliances and so on. Industrial plugs are often used in oil, construction sites, mines, factories and other fields to connect power for large machinery and equipment.

It is precisely because the use environment of industrial plug is worse than that of ordinary plug, so there are some differences in the properties of manufacturing materials of the two plugs. The insulation layer of industrial plug protection circuit adopts flame retardant rubber which can resist corrosion, and is not easy to be cut by sharp objects. But the insulation layer material of ordinary plug is more conventional, only has the simple insulation effect.

As the manufacturing process of industrial plug is more complex, its price is naturally higher than that of ordinary plug. These two kinds of plugs can not be used interchangeably, because their technological standards are not the same, and can not be connected with their respective matching sockets!