The screw covers which are part of thestandard delivery can be plugged in forhorizontal or vertical use, as required.

The enclosure height can be increased withoptional extension sets by 15.24 mm (3HP) or 45.72 mm (9 HP), as required

Additional grooves for the insertion ofcircuit boards and mounting panels arelocated on the inner enclosure side (onlywith 52011).

The boss dimensions conform to Euro cardand other formats.

19" internal constructions for 3 and 6 U inwidths 9, 12, 18, 21, 27, 30 and 36 HP areavailable on request.

As an option, two or more enclosures canbe joined by means of connectionelements

The screw covers can be replaced with wallflanges, tip-up feet or collapsible feet (allavailable as accessories).

The enclosure fronts can be removedseparately, which ensures efficientmounting of operating elements.