Industrial installation relays in sockets or interface relays for DIN rail mounting. With different NO or NC contact arrangements, for DC and AC loads, and currents up to 30 A. They provide greater galvanic isolation and the possibility of installing suppressor diodes or test pushbuttons. Indicated for industrial applications such as control of electrical equipment, air conditioners, refrigeration, ventilation, protection, control systems, alarms, domestic applications or automation, rail, etc.