Environmental and protection notes
The 3ADT218567S0137: The auxiliary terminals carry an IP00 rating per IEC 60529 and IEC 60947-1 — no enclosure protection at those points. In a panel build, the main power section may be IP20 or higher, but the aux terminal strip must be housed inside a locked cabinet or behind a gland plate to meet touch-safe requirements. Sound level is listed at 82 dB(A). That is the audible noise from the cooling fans at full load; for a control room or quiet production area, consider remote mounting or an acoustic enclosure. The fans are field-replaceable, but the noise figure is a fixed characteristic of the H8 frame's forced-air design.
