Based on this product's specifications, here are some alternatives and similar models
Eaton BPZ-NZM2-400-MV Steel Mounting Plate 400 x 400 mm Vertical
Summary description:
The Eaton BPZ-NZM2-400-MV is a robust steel mounting plate designed for vertical installation within electrical enclosures. Measuring 400 x 400 mm, this accessory provides a stable and secure base for mounting circuit breakers and other modular components. It is engineered for professional electrical distribution systems, ensuring reliable equipment organization and efficient space utilization in industrial or commercial panel builds.