This is a Schutzinger 50/2.5/100/SW (Submersible Waterproof) Electrical Connector. It is a waterproof connector designed for high-voltage water-immersion applications and is rated to a maximum of 50A, 2.5kV, and 100MO at 25°C. It features a durable and corrosion-resistant brass construction, a high-performance sealing system, and a design that permits repetitive mating and unmating without affecting its performance. The connector lock captures the cable and provides a secure connection, while the strain relief prevents any damage to the cable’s insulation. It is widely used in the industrial, construction, naval, and military applications.