Siemens 6EP1931-2EC42 SITOP DC UPS 24V/15A USB Interface DC UPS Module

The Siemens 6EP1931-2EC42 is a SITOP DC UPS module rated 24 V DC / 15 A output, drawing 22...29 V DC / 16 A at the input, that bridges mains power cuts with a connected battery module. It reaches 96.2% efficiency at rated output and adds a USB interface for status and configuration on top of floating relay contacts.

Technical Specifications

Certifications & Standards

• CE
• cULus
• EAC
• ABS
• DNV
• EPD

Selection Notes

This is the 15 A member of the SITOP DC UPS family with a USB interface, which lets a PC log battery status and set the buffer response voltage instead of relying on the floating relay contacts alone. Pick the serial-interface 15 A variant if the downstream controller reads status over RS-232 rather than USB, or the 6 A or 40 A variants in the same family when the load current differs. The 96.2% efficiency and 14 W power loss at rated output keep enclosure heat load low, and the 1 s startup delay should be accounted for when sequencing downstream 24 V loads.

Applications

Bridges the 24 V DC control supply for PLCs, remote I/O, and HMI panels through short mains interruptions until standby generators start or the supply recovers, using a separately ordered battery module for energy storage.