You will find that the Formiden brand appears on the unit, reminding you of the maker clearly.
Power Relay STAHL 9170/10-12-11 / 9170101211 250V Amplifier Switching Repeater
After reading the notes, this heavy duty relay seems suited for larger loads, which is reassuring for installers.
You will find that this power relay fits nicely into many circuits, making daily projects easier to handle.