The Siemens 6AG1931-2BA00-3AA0 is a 24 V DC power supply delivering 0.375 A from a 30–264 V DC input, housed in a 22.5 mm-wide DIN-rail enclosure. Clearance above and below the module is 50 mm for airflow; sides need 0 mm. Efficiency: 66 %. MTBF at 40 °C: 1 466 123 h. Storage and transport: -40... +85 °C. It carries CE marking, meets EN 55022 Class B for conducted emissions and EN 61000-6-2 for immunity, and provides safety extra-low voltage output per EN 60950-1 and EN 50178. Active in production, this part is available through our cross-border sourcing. Genuine is genuine — the same Siemens part, regardless of which authorized region it shipped from. We work to your RFQ to match the right passport. A 6 A circuit breaker with C characteristic is recommended on the feeder side.
Siemens 6AG1931-2BA00-3AA0 24VDC Power Supply, 0.375A, 22.5m
MPN6AG1931-2BA00-3AA0
6AG1931-2BA00-3AA0, Siemens 24 V DC power supply, 0.375 A, 22.5 x 80 x 91 mm, IP20, DC input 30...264 V.
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Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Fuse protection type | F 4 A/250 V (not accessible) |
| Type of electrical connection | screw-type terminals |
| Type of the power supply network | DC voltage |
| Voltage curve at output | Controlled, isolated DC voltage |
| At rated input voltage 48 | 0.3 A |
| At rated input voltage 220 | 0.06 A |
| Output voltage at DC rated value | 24 V |
| On slow fluctuation of input voltage | 0.1 % |
| Relative overall tolerance of the voltage | 3 % |
| Product function output voltage adjustable | No |
| Behavior of the output voltage when switching on | No overshoot of Vout (soft start) |
| At rated output voltage for rated value of the output current typical | 4.6 W |
All specifications
| Parameter | Value |
|---|---|
| Relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical | 0.3 % |
| At Short-Circuit during operation | 200 ms |
| Response value current limitation | 0.41 ... 0.49 A |
| Design of Short-Circuit protection | Electronic shutdown, automatic restart |
| At Short-Circuit during operation typical | 2.7 A |
| Property of the output Short-Circuit proof | Yes |
| Current limitation of inrush current at 25 °C maximum | 35 A |
| Buffering time for rated value of the output current in the event of power failure minimum | 10 ms |
| Supplied active power typical | 9 W |
| Depth of the enclosure | 91 mm |
| Width of the enclosure | 22.5 mm |
| Height of the enclosure | 80 mm |
| Product feature of the enclosure housing can be lined up | Yes |
| In horizontal mounting position during operation | -25 ... +70 °C; with natural convection |
| Installation altitude at height above sea level maximum | 6 000 m |
| Ambient condition relating to ambient temperature - air pressure - installation altitude | In case of operation at altitudes of 2000 - 6000 m above sea level: Output power derating of -7.5 %/1000 m or reduction of the ambient temperature by 5 K/1000 m |
| MTBF at 40 °C | 1 466 123 h |
| CE marking | Yes |
| Top | 50 mm |
| Left | 0 mm |
| Right | 0 mm |
| At DC | 30 ... 264 V |
| Bottom | 50 mm |
| Typical | 90 ms |
| At input | L+1, M1, PE: 1 screw terminal each for 0.5 ... 2.5 mm² single-core/finely stranded |
| At output | +: 1 screw terminal for 0.5 ... 2.5 mm²; -: 2 screw terminals for 0.5 ... 2.5 mm² |
| Rated range | 0 ... 0.375 A; +60 ... +70 °C: Derating 3%/K |
| Rated value | 0.375 A |
| In the feeder | Recommended miniature circuit breaker: from 6 A characteristic C, suitable for DC |
| Initial value | 30 V |
| Mounting | Snaps onto DIN rail EN 60715 35x7.5/15 |
| Full-Scale value | 187 V |
| I2t value maximum | 1.2 A²·s |
| Other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
| Galvanic isolation | Safety extra-low output voltage Uout acc. to EN 60950-1 and EN 50178 |
| Protection class IP | IP20 |
| Bridging of equipment | No |
| Efficiency in percent | 66 % |
| Response delay maximum | 2.5 s |
| For emitted interference | EN 55022 Class B |
| For interference immunity | EN 61000-6-2 |
| During storage and transport | -40 ... +85 °C |
| Load step 100 to 50% typical | 2 ms |
| Load step 50 to 100% typical | 2 ms |
| At output 1 at DC rated value | 24 V |
| Design of input wide range input | Yes |
| On slow fluctuation of ohm loading | 0.1 % |
| Operating resource protection class | Class I |
| Design of the overvoltage protection | Yes, according to EN 60950-1 |
| Display version for normal operation | Green LED for 24 V OK |
| Operating condition of the mains buffering | at Vin = 220 V |
| Galvanic isolation between input and output | Yes |
| Chemical resistance to commercially available cooling lubricants | Yes; incl. diesel and oil droplets in the air |
| Product conformity of the coating qualification and performance of electrical insulating compound for printed board assemblies according to IPC-CC-830A | Yes; Conformal Coating, Class A |
Product details
Frequently asked questions
What are the required clearances for mounting?
Top and bottom clearance is 50 mm each; left and right clearance is 0 mm.
What compliance documentation does this part have?
It carries CE marking and complies with EN 55022 Class B for emissions, EN 61000-6-2 for immunity, and safety extra-low voltage per EN 60950-1 and EN 50178.
MPN
6AG1931-2BA00-3AA0