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- Part number
- 6EP3124-0TA00-0AY0
- Model no
- PSU3400
- CE
- EAC
SITOP PSU3400Siemens 6EP3124-0TA00-0AY0 SITOP PSU3400 24V to 12V 15A DC/DC Converter
SITOP PSU3400 DC/DC converter, 24V DC in, 12V DC/15A adjustable output, 91% efficient.
Description
About the PSU3400
About the PSU3400
The Siemens 6EP3124-0TA00-0AY0 is a SITOP PSU3400 DC/DC converter that steps a 24 V DC input (14-32 V) down to a stabilized 12 V DC output at up to 15 A, with the output adjustable from 12 to 15.5 V via potentiometer. It runs at 91% efficiency, holds a 5 ms minimum buffering time at rated output, and reports output status through a relay contact.
Certifications & Standards
- CE
- EAC
- RCM
- CB
- Shipbuilding
- ABS
- DNV
Selection Notes
This is the 12 V/15 A tap of the PSU3400 DC/DC family fed from a 24 V DC bus - pick it over the 24 V-output PSU3400 variants when the downstream load genuinely needs 12 V, since the converter does not down-convert further than its fixed output tap. The output adjusts 12-15.5 V via potentiometer, which covers cable-drop compensation on long 12 V runs without a separate boost stage. A 5 ms minimum buffering time at rated output means momentary 24 V bus dips shorter than that do not reach the 12 V load, but longer interruptions need a buffer module or battery stage upstream.
Applications
Converts an existing 24 V DC control bus down to 12 V DC for loads that standardize on 12 V - sensors, relay coils, or auxiliary electronics - without adding a second mains-fed power supply next to the 24 V DC rail already in the cabinet.
Specification
Full specification
General information 4
| product brand name | SITOP |
|---|---|
| product type designation | PSU3400 |
| product designation | Power supply SITOP DC-DC converter |
| type of current supply | 12 V/15 A |
Input 14
| type of the power supply network | DC voltage |
|---|---|
| voltage curve at input | DC |
| supply voltage at AC | Startup as of 18 V, derating necessary for 14 ... 18 V DC |
| supply voltage at DC | 24 V |
| input voltage at DC | 14 ... 32 V |
| wide range input | No |
| overvoltage overload capability | - |
| buffering time for rated value of the output current in the event of power failure minimum | 5 ms |
| operating condition of the mains buffering | at Vin = 24 V |
| input current: at rated input voltage 24 V | 8.4 A |
| current limitation of inrush current at 25 °C maximum | 15 A |
| I2t value maximum | 0.6 A2·s |
| fuse protection type | 25 A (not accessible), breaking capacity 300 A |
| fuse protection type in the feeder | Recommended miniature circuit breaker: 16 A characteristic B or C |
Output 25
| voltage curve at output | Controlled, isolated DC voltage |
|---|---|
| product function output voltage controlled | Yes |
| product function output voltage stabilized | Yes |
| output voltage at DC rated value | 12 V |
| output voltage: at output 1 at DC rated value | 12 V |
| output voltage: at output 1 at DC | 12 V |
| output voltage adjustable | Yes; via potentiometer |
| adjustable output voltage | 12 ... 15.5 V |
| relative overall tolerance of the voltage | 2% |
| relative control precision of the output voltage: on slow fluctuation of input voltage | 0.2 % |
| residual ripple: maximum | 150 mV |
| residual ripple: typical | 30 mV |
| voltage peak: maximum | 250 mV |
| voltage peak: typical | 50 mV |
| display version for normal operation | Green LED for 12 V OK |
| type of signal at output | Relay contact (NO contact, contact rating 30 V AC/0.5 A; 60 V DC/0.3 A; 30 V DC/1 A) for 12 V O.K. |
| behavior of the output voltage when switching on | No overshoot of Vout (soft start) |
| response delay maximum | 0.5 s |
| voltage increase time of the output voltage: typical | 5 ms |
| voltage increase time of the output voltage: maximum | 10 ms |
| output current: rated value | 15 A |
| output current: rated range | 0 ... 15 A; +60 ... +70 °C: Derating 2%/K |
| supplied active power typical | 200 W |
| bridging of equipment | Yes |
| number of parallel-switched equipment resources for increasing the power | 2 |
Show all 120 specifications ↓ Show less ↑77 more values in Identification, Efficiency, Closed-loop control, Protection and monitoring, Safety, EMC, Standards, specifications, approvals, Standards, specifications, approvals marine classification, Ambient conditions, Connection method, Mechanical data, Accessories, Additional information, Version Classification, Logistics.
Identification 10
| Part number | 6EP3124-0TA00-0AY0 |
|---|---|
| Type designation | PSU3400 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515155447 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
Efficiency 3
| efficiency in percent | 91 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 21 W |
| power loss [W]: during no-load operation maximum | 0.5 W |
Closed-loop control 4
| relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical | 0.3 % |
|---|---|
| relative control precision of the output voltage load step of resistive load 50/100/50 % typical | 4% |
| setting time: load step 50 to 100% typical | 2 ms |
| setting time: load step 100 to 50% typical | 2 ms |
Protection and monitoring 5
| design of the overvoltage protection | Ua < 22 V |
|---|---|
| property of the output short-circuit proof | Yes |
| design of short-circuit protection | Electronic shutdown, automatic restart |
| typical | 16 A |
| display version for overload and short circuit | LED yellow for "overload" |
Safety 4
| electrical separation between input and output | Yes |
|---|---|
| galvanic isolation | Output voltage: SELV, ES1 (IEC 62368-1), DVC As (IEC 61204-7) |
| operating resource protection class | Class III |
| protection class IP | IP20 |
EMC 3
| standard: for emitted interference | EN 61000-6-3 |
|---|---|
| standard: for mains harmonics limitation | not applicable |
| standard: for interference immunity | EN 61000-6-2 |
Standards, specifications, approvals 11
| certificate of suitability: CE marking | Yes |
|---|---|
| certificate of suitability: UL approval | Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259 |
| certificate of suitability: EAC approval | Yes |
| certificate of suitability: Regulatory Compliance Mark (RCM) | Yes |
| certificate of suitability: NEC Class 2 | No |
| type of certification: CB-certificate | Yes |
| MTBF at 40 °C standards, specifications, approvals hazardous environments | 1 411 273 h |
| certificate of suitability: IECEx | No |
| certificate of suitability: ATEX | No |
| certificate of suitability: ULhazloc approval | No |
| certificate of suitability: FM registration | No |
Standards, specifications, approvals marine classification 5
| shipbuilding approval | Yes |
|---|---|
| Marine classification association: American Bureau of Shipping Europe Ltd. (ABS) | Yes |
| Marine classification association: French marine classification society (BV) | No |
| Marine classification association: Det Norske Veritas (DNV) | Yes |
| Marine classification association: Lloyds Register of Shipping (LRS) | No |
Ambient conditions 4
| ambient temperature: during operation | -25 ... +70 °C; with natural convection |
|---|---|
| ambient temperature: during transport | -40 ... +85 °C |
| ambient temperature: during storage | -40 ... +85 °C |
| environmental category according to IEC 60721 | Climate class 3K3, 5 ... 95% no condensation |
Connection method 5
| type of electrical connection | screw terminal |
|---|---|
| at input | L, N, FE: 1 screw terminal each for 0.5 ... 2.5 mm2 single-core/finely stranded |
| at output | +, -: 2 screw terminals each for 0.5 ... 2.5 mm2 |
| for auxiliary contacts | Alarm signals: 2 screw terminals for 0.5 ... 2.5 mm2 |
| for signaling contact | 2 screw terminals for 0.5 ... 2.5 mm2 |
Mechanical data 11
| width × height × depth of the enclosure | 42 × 125 × 120 mm |
|---|---|
| installation width × mounting height | 42 mm × 225 mm |
| required spacing: top | 50 mm |
| required spacing: bottom | 50 mm |
| required spacing: left | 0 mm |
| required spacing: right | 0 mm |
| fastening method | Snaps onto DIN rail EN 60715 35x7.5/15 |
| DIN-rail mounting | Yes |
| S7 rail mounting | No |
| wall mounting | No |
| housing can be lined up | Yes |
Accessories 1
| electrical accessories | Buffer module |
|---|
Additional information 1
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|
Version Classification 4
| eClass | 16 27-04-07-01 |
|---|---|
| ETIM | 10 EC002540 |
| IDEA | 4 4130 |
| UNSPSC | 15 39-12-10-04 |
Logistics 6
| Net weight | 0.4 kg |
|---|---|
| Country of origin | HU |
| Shipping weight | 0.9 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
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Certifications
Certifications and standards
- CE
- EAC
- CE marking
- EAC approval
- Regulatory Compliance Mark (RCM)
- CB-certificate
- shipbuilding approval
- American Bureau of Shipping Europe Ltd. (ABS)
- Det Norske Veritas (DNV)
Quick answers
Questions about the PSU3400
What is the rated current of PSU3400?
The rated current of PSU3400 is 15 A.
What motor power is PSU3400 rated for?
The rated motor power of PSU3400 is 0.2 kW.
What is the HS code of PSU3400 for customs?
The tariff (HS) code on file for PSU3400 is 85044095.
What is the EAN of PSU3400?
The EAN (GTIN) of PSU3400 is 4025515155447.
Where does PSU3400 ship from, and how fast?
PSU3400 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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Series
Siemens SITOP PSU3400
- Brand
- Siemens
- Series
- SITOP PSU3400
