DS EN 4644-131:2011 Aerospace Series - Connector, Electrical And Optical, Rectangular, Modular, Rectangular Inserts, Operating Temperature 175 Degrees C (Or 125 Degrees C) Continuous - Part 131: Size 3 Plug For Rack And Panel Applications - Product Standard Defines the size 3 plug for rack and panel applications used in the family of modular rectangular electrical and optical connector with rectangular inserts, operating temperature 175 degrees C (or 125