Overview
The 6EP1931-2FC42 is a Siemens SITOP DC UPS rated 960 W, accepting a 24 V DC input and providing a buffered output at Vin minus approximately 0.5 V. It is a standby-type UPS with a USB port for monitoring and a metal housing rated IP20.

Siemens SITOP DC UPS 6EP1931-2FC42, standby UPS, 960 W, 24 V DC input, USB port, IP20, metal housing, DIN rail mount, cULus-Listed.
| Parameter | Value |
|---|---|
| Rated current | 40 A |
| Output power at rated voltage/current (typ.) | 28.6 W |
| Parameter | Value |
|---|---|
| Supplied active power (typ.) | 960 W |
| Parameter | Value |
|---|---|
| Ingress protection (IP) rating | IP20 |
| Protection class | Class III |
| Galvanic isolation input/output | No |
| Parameter | Value |
|---|---|
| Electrical connection type | screw-type terminals |
| Input terminals | 24 V DC: 2 screw terminals for 0.33 ... 10 mm²/22 ... 7 AWG |
| Output terminals | 24 V DC: 2 screw terminals for 0.33 ... 10 mm²/22 ... 7 AWG |
| Parameter | Value |
|---|---|
| Mounting method | Snaps onto DIN rail EN 60715 35x7.5/15 |
| Enclosure width | 102 mm |
| Enclosure height | 125 mm |
| Enclosure depth | 125 mm |
| Side-by-side mountable | Yes |
| Mounting clearance, left | 0 mm |
| Mounting clearance, right | 0 mm |
| Mounting clearance, top | 50 mm |
| Mounting clearance, bottom | 50 mm |
| Parameter | Value |
|---|---|
| Operating temperature range | -25 ... +60 °C; with natural convection |
| Storage temperature range | -40 ... +85 °C |
| Transport temperature range | -40 ... +85 °C |
| Climatic class (IEC 60721) | Climate class 3K3, 5 … 95% no condensation |
| Parameter | Value |
|---|---|
| CE marking | Yes |
| UL approval | Yes |
| EAC approval | Yes |
| Shipbuilding approval | ABS, DNV GL |
| EMC – emission standard | EN 55022 Class B |
| EMC – immunity standard | EN 61000-6-2 |
| Parameter | Value |
|---|---|
| MTBF at 40 °C | 493 340 h |
The 6EP1931-2FC42 is a Siemens SITOP DC UPS rated 960 W, accepting a 24 V DC input and providing a buffered output at Vin minus approximately 0.5 V. It is a standby-type UPS with a USB port for monitoring and a metal housing rated IP20.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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