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- Part number
- 6EP1536-3AA00
- Model no
- PSU400M
- CE
- EAC
SITOP PSU400MSiemens 6EP1536-3AA00 SITOP PSU400M 600V DC 24V/20A DIN Rail DC/DC Converter
SITOP PSU400M DIN rail DC/DC converter, 300-900V DC input to 24V/20A output, 95% efficiency.
Description
About the PSU400M
About the PSU400M
The Siemens 6EP1536-3AA00 is a SITOP PSU400M DC/DC converter that steps a 300-900 V DC bus (600 V nominal) down to a stabilized 24 V DC output rated 20 A (480 W). It mounts on a 90 mm-wide DIN rail, uses a soft-start with no output overshoot on switch-on, and holds 95% efficiency at rated load.
Certifications & Standards
- CE
- UKCA
- EAC
- RCM
- CB
- Shipbuilding
- DNV
- EPD
Selection Notes
Unlike the AC-input SITOP power supplies, the 6EP1536-3AA00 takes a 300-900 V DC bus directly, so it fits behind a rectified or battery-backed DC distribution system rather than a mains feed - the 600 V nominal rating covers common DC traction and telecom bus voltages. Soft-start eliminates output overshoot on power-up, and the response delay is switch-selectable between 0.1 s and 10 s, letting the startup sequence be timed against downstream equipment. Short-circuit behavior is switchable between a constant-current characteristic around 22 A and a latching shutdown, so the fault response can be matched to whether the load needs to recover automatically or be reset manually.
Specification
Full specification
General information 4
| product brand name | SITOP |
|---|---|
| product type designation | PSU400M |
| product designation | Power supply SITOP modular |
| type of current supply | 24 V/20 A |
Input 10
| type of the power supply network | DC voltage |
|---|---|
| voltage curve at input | DC |
| supply voltage at AC | startup from 340 V DC; derating necessary at 300 ... 400 V DC and 824 ... 900 V DC |
| supply voltage at DC | 600 V |
| input voltage at DC | 300 ... 900 V |
| overvoltage overload capability | Shutdown at Vin > 900 V DC |
| input current at DC: at rated input voltage 600 V | 0.85 A |
| current limitation of inrush current at 25 °C maximum | 8 A |
| I2t value maximum | 0.02 A2·s |
| fuse protection type | yes, cut-off capacity 20 kA; L/R < 2 ms ("+" and "-" input) |
Output 29
| 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 | 24 V |
| output voltage: at output 1 at DC rated value | 24 V |
| output voltage: at output 1 at DC | 24 V |
| output voltage adjustable | Yes; via potentiometer |
| adjustable output voltage | 24 ... 28.8 V; max. 480 W |
| relative overall tolerance of the voltage | 3% |
| relative control precision of the output voltage: on slow fluctuation of input voltage | 0.3 % |
| residual ripple: maximum | 150 mV |
| residual ripple: typical | 30 mV |
| voltage peak: maximum | 200 mV |
| voltage peak: typical | 100 mV |
| display version for normal operation | Green LED for 24 V OK, green flashing LED for start delay |
| type of signal at output | Relay contact (NO contact, rating 60 V DC/ 0.3 A; 30 V DC/1 A) for 24 V OK |
| behavior of the output voltage when switching on | No overshoot of Vout (soft start) |
| response delay maximum | 0.1 s; 10 s adjustable using switch |
| voltage increase time of the output voltage: maximum | 150 ms |
| output current: rated value | 20 A |
| output current: rated range | 0 ... 20 A; +60 ... +70 °C: Derating 5.5%/K |
| supplied active power typical | 480 W |
| short-term overload current: on short-circuiting during the start-up typical | 40 A |
| short-term overload current: at short-circuit during operation typical | 60 A |
| duration of overloading capability for excess current: on short-circuiting during the start-up | 150 ms |
| duration of overloading capability for excess current: at short-circuit during operation | 25 ms |
| constant overload current: on short-circuiting during the start-up typical | 23 A |
| bridging of equipment | Yes; switchable characteristic |
| number of parallel-switched equipment resources for increasing the power | 2 |
Show all 126 specifications ↓ Show less ↑83 more values in Identification, Efficiency, Closed-loop control, Protection and monitoring, Safety, EMC, Standards, specifications, approvals, Standards, specifications, approvals hazardous environments, Standards, specifications, approvals marine classification, Standards, specifications, approvals Environmental Product Declaration, Ambient conditions, Connection method, Mechanical data, Accessories, Version Classification, Logistics.
Identification 10
| Part number | 6EP1536-3AA00 |
|---|---|
| Type designation | PSU400M |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515152866 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
Efficiency 2
| efficiency in percent | 95 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 25 W |
Closed-loop control 5
| relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical | 1.5 % |
|---|---|
| relative control precision of the output voltage load step of resistive load 50/100/50 % typical | 1.5 % |
| setting time: load step 50 to 100% typical | 1 ms |
| setting time: load step 100 to 50% typical | 1 ms |
| setting time: maximum | 5 ms |
Protection and monitoring 7
| design of the overvoltage protection | < 33 V |
|---|---|
| property of the output short-circuit proof | Yes |
| design of short-circuit protection | Alternatively, constant current characteristic approx. 22 A or latching shutdown |
| typical | 22 A |
| overcurrent overload capability: in normal operation | overload capability 150 % Iout rated up to 5 s/min |
| enduring short circuit current RMS value: typical | 22 A |
| display version for overload and short circuit | LED yellow for "overload", LED red for "latching shutdown", red LED flashing for "Overtemperature" |
Safety 4
| galvanic isolation between input and output | Yes |
|---|---|
| galvanic isolation | Output voltage: PELV (IEC 61010-2-201) |
| operating resource protection class | Class I |
| protection class IP | IP20 |
EMC 3
| standard: for emitted interference | EN 55022 Class A (emission) |
|---|---|
| standard: for mains harmonics limitation | - |
| standard: for interference immunity | EN 61000-6-2 |
Standards, specifications, approvals 8
| 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: UKCA marking | Yes |
| 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 | 622 277 h |
Standards, specifications, approvals hazardous environments 4
| 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) | No |
| 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 |
Standards, specifications, approvals Environmental Product Declaration 5
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 662.4 kg |
| global warming potential [CO2 eq]: during manufacturing | 28.7 kg |
| global warming potential [CO2 eq]: during operation | 633.1 kg |
| global warming potential [CO2 eq]: after end of life | 0.24 kg |
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 4
| type of electrical connection | screw terminal |
|---|---|
| at input | DC input, +, -, PE: 1 screw terminal each for 0.2 ... 6/4 mm2 single-core/finely stranded |
| at output | +, -: 2 screw terminals each for 0.2 ... 6/4 mm2 single-core/finely stranded |
| for auxiliary contacts | Alarm signals: 2 screw terminals for 0.14 ... 1.5 mm2 single-core/finely stranded |
Mechanical data 11
| width × height × depth of the enclosure | 90 × 125 × 125 mm |
|---|---|
| installation width × mounting height | 90 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
| mechanical accessories | Device identification label 20 mm × 7 mm, pale turquoise 3RT1900-1SB20 |
|---|
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 | 1 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 1.5 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6EP1536-3AA00
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Ask us for the datasheet
Certifications
Certifications and standards
- CE
- EAC
- CE marking
- UKCA marking
- EAC approval
- Regulatory Compliance Mark (RCM)
- CB-certificate
- shipbuilding approval
- Det Norske Veritas (DNV)
- Environmental Product Declaration
Quick answers
Questions about the PSU400M
What is the rated current of PSU400M?
The rated current of PSU400M is 20 A.
What motor power is PSU400M rated for?
The rated motor power of PSU400M is 25 W kW.
What is the HS code of PSU400M for customs?
The tariff (HS) code on file for PSU400M is 85044095.
What is the EAN of PSU400M?
The EAN (GTIN) of PSU400M is 4025515152866.
Where does PSU400M ship from, and how fast?
PSU400M ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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Series
Siemens SITOP PSU400M
- Brand
- Siemens
- Series
- SITOP PSU400M
