Based on this product's specifications, here are some alternatives and similar models
Connector socket Rittal SZ 2500.600 VE5 3‑pole 100–240V (MPN 2500600)
Summary description:
Rittal SZ 2500.600 VE5 is a 3‑pole connector socket designed for 100–240V applications. With manufacturer model 2500600, it provides a compact electrical connection solution for industrial enclosures, control cabinets and equipment requiring a three‑pole power interface. Suitable for installation where a reliable mains connector with standard voltage range is needed.