Main Components of a PLC System: Complete Guide for Engineers
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The Siemens SITOP PSU4200 (6EP3332-3SB00-0AX0) is a single-phase stabilized power supply that converts a 120/240 V AC input into a regulated 24 V DC output rated 3 A / 72 W. It buffers the rated output current for a minimum of 15 ms on power loss and reaches 85% efficiency, with output adjustable from 24 to 28 V via potentiometer.
The 3 A output covers compact 24 V DC loads such as a single SIMATIC S7-1200 station without stepping up to the same series' 6 A or 10 A units. Adjustable output up to 28 V compensates voltage drop on longer DC feeder runs, and the 15 ms buffering time rides through typical mains dips without an external UPS module.
Powers compact SIMATIC S7-1200 machine controllers, 24 V DC sensor/actuator circuits, and panel builds where enclosure width is limited, since the housing is only 50 mm wide.
| product brand name | SITOP |
|---|---|
| product type designation | PSU4200 |
| product designation | Power supply SITOP PSU4200 |
| type of current supply | 24 V/3 A |
| type of the power supply network | 1-phase AC |
|---|---|
| phase number | 1 |
| voltage curve at input | AC |
| supply voltage at AC | Automatic range selection |
| supply voltage 1 at AC | 100 ... 120 V |
| supply voltage 2 at AC | 200 ... 240 V |
| input voltage 1 at AC | 85 ... 132 V |
| input voltage 2 at AC | 187 ... 264 V |
| supply voltage: at 50 Hz | 240 V |
| supply voltage: at 60 Hz | 120 V |
| line frequency | 50/60 Hz |
| wide range input | No |
| buffering time for rated value of the output current in the event of power failure minimum | 15 ms |
| operating condition of the mains buffering | at Vin = 120/240 V |
| input current: at rated input voltage 100 V | 1.5 A |
| input current: at rated input voltage 120 V | 1.3 A |
| input current: at rated input voltage 200 V | 0.9 A |
| input current: at rated input voltage 230 V | 0.73 A |
| input current: at rated input voltage 240 V | 0.7 A |
| current limitation of inrush current at 25 °C maximum | 45 A |
| duration of inrush current limiting at 25 °C: typical | 20 ms |
| I2t value maximum | 1.6 A2·s |
| fuse protection type | 3.15 A |
| fuse protection type in the feeder output | Recommended miniature circuit breaker: from 6 A characteristic C to from 16 A characteristic C |
| 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 V |
| relative overall tolerance of the voltage | 3% |
| relative control precision of the output voltage: on slow fluctuation of input voltage | 0.2 % |
| residual ripple: maximum | 150 mV |
| residual ripple: typical | 40 mV |
| voltage peak: maximum | 240 mV |
| voltage peak: typical | 40 mV |
| display version for normal operation | Green LED for 24 V OK |
| behavior of the output voltage when switching on | No overshoot of Vout (soft start) |
| response delay maximum | 1.5 s |
| voltage increase time of the output voltage: typical | 190 ms |
| voltage increase time of the output voltage: maximum | 500 ms |
| output current: rated value | 3 A |
| output current: rated range | 0 ... 3 A; +60 to +70 °C: without derating |
| supplied active power typical | 72 W |
| bridging of equipment | Yes |
| number of parallel-switched equipment resources for increasing the power | 2 |
| efficiency in percent | 85 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 13 W |
| power loss [W]: during no-load operation maximum | 2.2 W |
| Part number | 6EP3332-3SB00-0AX0 |
|---|---|
| Type designation | PSU4200 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515156222 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
| relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical | 0.2 % |
|---|---|
| relative control precision of the output voltage load step of resistive load 50/100/50 % typical | 2% |
| relative control precision of the output voltage at load step of resistive load 10/90/10 % typical | 2.5 % |
| setting time: load step 10 to 90% typical | 1 ms |
| setting time: load step 90 to 10% typical | 1 ms |
| design of the overvoltage protection | < 32 V |
|---|---|
| property of the output short-circuit proof | Yes |
| design of short-circuit protection | Constant current characteristic |
| typical | 3.6 A |
| enduring short circuit current RMS value: typical | 3.5 A |
| galvanic isolation between input and output | Yes |
|---|---|
| galvanic isolation | Output voltage: SELV, ES1 (IEC 62368-1), DVC As (IEC 61204-7) |
| operating resource protection class | Class I |
| leakage current: maximum | 1.4 mA |
| leakage current: typical | 0.7 mA |
| protection class IP | IP20 |
| standard: for emitted interference | EN 55032 Class A |
|---|---|
| standard: for mains harmonics limitation | EN 61000-3-2 |
| standard: for interference immunity | EN 61000-6-2 |
| 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: BIS | Yes; R-41183539 |
| type of certification: CB-certificate | Yes |
| MTBF at 40 °C | 1 700 000 h |
| certificate of suitability: IECEx | No |
|---|---|
| certificate of suitability: ATEX | No |
| certificate of suitability: ULhazloc approval | No |
| certificate of suitability: FM registration | No |
| shipbuilding approval | No |
|---|---|
| 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) | No |
| Marine classification association: Lloyds Register of Shipping (LRS) | No |
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 366 kg |
| global warming potential [CO2 eq]: during manufacturing | 13 kg |
| global warming potential [CO2 eq]: during operation | 352.4 kg |
| global warming potential [CO2 eq]: after end of life | 0.38 kg |
| Siemens eco profile (SEP) | Siemens EcoTech |
| 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 |
| type of electrical connection | push-in terminals |
|---|---|
| at input | L, N, PE: push-in for 0.5 ... 4 mm2 |
| at output | +, -: push-in for 0.5 ... 2.5 mm2 |
| width × height × depth of the enclosure | 50 × 135 × 125 mm |
|---|---|
| installation width × mounting height | 50 mm × 225 mm |
| required spacing: top | 45 mm |
| required spacing: bottom | 45 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 | Yes |
| housing can be lined up | Yes |
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|
| Environmental Product Declaration: global warming potential [CO2 eq] / during manufacturing | 13 kg |
|---|
| Net weight | 0.44 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 0.94 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of PSU4200 is 3 A.
The rated operational voltage of PSU4200 is 120–240 V AC.
The rated motor power of PSU4200 is 13 W kW.
The tariff (HS) code on file for PSU4200 is 85044083.
The EAN (GTIN) of PSU4200 is 4025515156222.
PSU4200 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.