Screw-type magnet coil terminals and power-side screw clamps accepting 6 to 70 mm² stranded wire mean you land the load cables without special tooling — common on 400 V distribution panels where ring lugs or pin ferrules are standard.
The 70 mm width and 140 mm height are the panel-space numbers. On a 600 x 400 mm backplate you can row-mount about eight of these side-by-side with 10 mm spacing — that is the fill factor a sourcing buyer needs to know before committing a BOM line. The mounting position flexibility (+/-180° rotation, +/-22.5° tilt on vertical surface,) means it can go into a swing-panel or a slanted cabinet without worrying about gravity pulling the armature out of alignment.