Based on this product's specifications, here are some alternatives and similar models
Relpol R15 3P Relay Socket PZ11
Summary description:
The Relpol PZ11 relay socket is designed for R15 series 3-pole electromagnetic relays. This high-quality base ensures secure mounting and reliable electrical connections for industrial control systems and automation applications. It features a robust design for stable performance in various electrical installations, facilitating easy installation and maintenance of relay components.