Based on this product's specifications, here are some alternatives and similar models
Bals 11922 Electrical Socket Coupler 32A 3P+PE IP44
Summary description:
The Bals 11922 is a high-quality industrial electrical socket coupler designed for reliable power distribution. Featuring a 32A current rating and a 3P+PE configuration, this connector ensures a secure connection for demanding electrical environments. Built with an IP44 protection rating, it offers resistance against splashing water and solid objects, making it suitable for professional and industrial applications requiring robust connectivity.