This part is a kind of semiconductor called 6EP1931-2FC21.

Function of this product has (6EP1931-2FC21 / 6EP1931-2FC41) DC UPS/USV Module.

Manufacturers : Siemens

Image and pinout :

Some of the text within the PDF file :

SITOP DC-USV-Modul 40 SITOP DC-UPS-Module 40 6EP1931-2FC21 6EP1931-2FC41 Betriebsanleitung Operating Instructions Order No.: C98130-A7555-A7-02-7419 6EP1931-2FC21 6EP1931-2FC41 Siemens AG Österreich, 01/2005 1 of 8 SITOP DC-USV-Modul 40 Maßbild Dimension drawings 6EP1931-2FC21/41 On / Off +2V Zuschaltschwelle +1V (cut-in threshold) +0,5V +22V fest eingestellt (fixed) +1V +1V +0,5V Ladeschlussspannung +0,2V (end-of-charge voltage) +0,2V + 26,3V fest eingestellt (fixed) +0,1V 1A / 2A Ladestrom (charging current) eingestellte Zeit / max. Zeit (set time / max.) +320s +160s + 80s Pufferzeit (buffering time) + 40s + 20s + 10s +5s fest eingestellt (fixed) Unterbrechung output (disconnection) Betriebszustand Akku On / Off (operating state battery) Kompatibilität (n [ ... ]

6EP1931-2FC21 PDF Datasheet Download