Industrial plugs, as the name implies, are suitable for use in industry. They are generally divided into 3 cores, 4 cores, 5 cores, etc. The current is generally divided into 16A, 32A, 63A, 125A, 250A, 420A, etc. The protection grade can be divided into IP44 and IP67. Two, for these are more conventional. In general, it is used in conjunction with industrial sockets and industrial connectors.
