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The EN 4644 series of standards describes modular rectangular electrical and optical connectors with rectangular inserts, operating temperature 175 °C (or 125 °C) continuous. The connectors described in this standard are suitable for use on board of commercial and military aircraft for panel and rack application under rough environmental conditions. The new version of Part 131 specifies the size plug 3 for rack and panel applications used in the family of modular rectangular electrical and optical connector with rectangular inserts. The receptacle corresponding to this plug is defined in EN 4644-133. This standard differs from the previous edition DIN EN 4644-131:2012:03 as follows: a) Classes C and D have been added to the title; b) Figure 1 has been editorially revised and dimensional data have been added; c) Figure 2 has been editorially revised. The standards of the EN 4644 series are prepared by the ASD-STAN, Technical Section Electrotechnology, with the participation of German experts from DIN Standards Committee Aerospace (NL). AeroSpace and Defence Industries Association of Europe - Standardization (ASD-STAN) has been declared responsible by the European Committee for Standardization (CEN) for preparing European Standards (EN) for the field of aerospace. The responsible German standardization body is Working Committee NA 131-04-03 AA "Elektrische Verbindungselemente" ("Electrical Connectors") at DIN Standards Committee Aerospace (NL).
This document replaces DIN EN 4644-131:2012-03 .