Based on this product's specifications, here are some alternatives and similar models
Terminal control connector 4‑hole 57×57×57 mm galvanized ELKO‑BIS 4.1 OC
Summary description:
ELKO‑BIS terminal control connector 4‑hole (model 4.1 OC) is a galvanized metal junction element with external dimensions 57×57×57 mm. Designed for electrical installations, it provides a durable connection point for control and signaling wiring. Suitable for indoor and protected outdoor use where a compact, corrosion‑resistant junction box is required.