Industrial sockets and plugs are widely used in train power supply, platform equipment, signal systems and maintenance and other scenarios in rail transit, providing stable and reliable power connections for on-board equipment (such as lighting, air conditioning), facilities along the track (such as signal lights, charging piles) and maintenance tools. Its design has a high protection level (such as IP44/IP67), vibration resistance, dust and water proofing and flame retardant characteristics, to ensure safe operation in complex environments, while some products support rapid insertion and locking functions, to meet the needs of rail transit efficient and durable.