Rockwell Automation Allen-Bradley 931S-A2A5N-OP Notice D'utilisation page 8

FOR INSTALLATION IN CLASS I, ZONE 2 LOCATIONS:
E. This equipment is to be installed into suitable enclosure, providing a
degree of protection not less than IP 54 in accordance with IEC 60529
unless the apparatus is intended to be afforded an equivalent degree
of protection by location.
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DIR 10000043396
(Version 00)