This part is a kind of semiconductor called FX3U.

Function of this product has Programmable Controllers.

Manufacturers : Mitsubishi

Image and pinout :

Some of the text within the PDF file :

MITSUBISHI ELECTRIC Programmable Controllers Installation Manual for Base Units of the FX3U Series Art-no.: 169938 ENG, Version B, 17082007 Specifications General specifications Item Ambient temperature when operating when stored Specification 0 to 55 °C -25 to 75 °C 5 to 95 % (no condensation) Free from corrosive or flammable gas and excessive conductive dusts DC powered main units Item Supply voltage Allowable supply voltage range Allowable instantaneous power failure time FX3U-16M२/E FX3U-32M२/E Power fuse FX3U-48M२/E FX3U-64M२/E FX3U-80M„/E Specification 100 – 240 V AC (+10 % / -15 %), 50/60 Hz 85 – 264 V AC max. 10 ms (pre-set) adjustable from 10 – 100 ms (special register D8008) 250 V / 3.15 A Power consumption Rush current FX3U-16M२/E FX3U-32M२/E FX3U-48M२/E [ ... ]

FX3U PDF Datasheet Download