Based on this product's specifications, here are some alternatives and similar models
Eaton BPZ-TSB-800 Terminal Mounting Rail
Summary description:
The Eaton BPZ-TSB-800 is a professional-grade terminal mounting rail designed for secure installation of electrical components within distribution boards. This robust accessory ensures reliable organization and support for terminal blocks, facilitating efficient wiring and maintenance in industrial and commercial electrical systems. It is engineered for compatibility with Eaton enclosure systems, providing a stable foundation for complex electrical configurations.