Based on this product's specifications, here are some alternatives and similar models
Relpol GZ2 Spring Retaining Clip
Summary description:
The Relpol GZ2 is a professional spring retaining clip designed for the secure mounting and stabilization of compatible industrial relays. This accessory ensures reliable contact and prevents accidental disconnection in control cabinets and automation systems. It is a durable component essential for maintaining stable electrical connections in various industrial applications.