Based on this product's specifications, here are some alternatives and similar models
Legrand 421072 Mounting Plate for TH35 Rail for DPX3 250
Summary description:
The Legrand 421072 is a dedicated mounting plate designed for the secure installation of DPX3 250 circuit breakers onto a standard TH35 DIN rail. This essential electrical distribution board accessory ensures stable positioning and reliable integration within modular enclosures. It is a high-quality component engineered for professional electrical installations, providing a precise fit and robust support for industrial or commercial power distribution systems.