Based on this product's specifications, here are some alternatives and similar models
F&F ST40-40-M Modular Contactor 40A 4NO
Summary description:
The F&F ST40-40-M is a high-quality modular contactor designed for reliable electrical circuit switching in residential and industrial installations. Featuring a 40A rated current and 4 normally open (4NO) contacts, this device ensures efficient control of lighting, heating, and ventilation systems. Its modular design allows for easy DIN-rail mounting, providing a compact and professional solution for modern electrical distribution boards.