Standard connectors with cable guide and cable clamp.

Amphenol - SL 61 Series Circular Connectors

This family of connectors is widely used in industrial and electronic applications.
This series includes: sockets fitted with male or female contacts, plugs with a choice of straight or angled connectors and accessories (blanking plugs, sealing sleeves).
Available in four enclosure sizes, four types of contacts including currents ranging from 7.5 to 50 Amperes, and different contact arrangements.
Connected using screws, with positioning and guiding pin.