Siemens 6EP1931-2FC01 SITOP Power DC UPS Module 40

Siemens 6EP1931-2FC01 SITOP DC-USV Module 40 is a DIN-rail mounted 24 V DC uninterruptible power supply designed to keep critical automation equipment powered during brief voltage dips. It accepts a nominal 24 V DC input (23.5–26 V) and delivers a stable 24 V DC output at up to 40 A, making it suitable for protecting PLCs and other 24 V control circuits in SITOP-based power architectures. This 40 A DC UPS module is part of Siemens’ SITOP DC-USV Module family and represents the variant without a USB interface, with Siemens offering a USB-enabled option under model 6EP1931-2FC42. The device is a chassis module intended for mounting on a DIN rail (DIN EN 50022) in industrial control cabinets, and packaging for this listing indicates it ships with its box. Use this module to provide a reliable buffer for short outages in 24 V automation systems and to uphold essential control functions during transient power disturbances.