Main Components of a PLC System: Complete Guide for Engineers
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.
The Siemens 6EP3333-3SB00-0AX0 is a SITOP PSU4200 single-phase stabilized power supply converting 100-240 V AC input to a regulated 24 V DC output at 5 A, with automatic input range selection and an adjustable 24-28 V output. It delivers 120 W of active power typical and reaches 87% efficiency at rated load.
The 5 A / 120 W typical rating covers small-to-mid DIN-rail 24 V loads; two units can be paralleled to increase available power or add redundancy per the verified parallel-operation rating. The adjustable 24-28 V output lets it compensate voltage drop on long output cable runs to remote I/O or field devices. Automatic 100-240 V AC input range selection removes the need for a manual voltage selector switch when the same design ships to different countries.
DIN-rail 24 VDC bus supply for PLC racks, remote I/O stations, and control-panel instrumentation.
| product brand name | SITOP |
|---|---|
| product type designation | PSU4200 |
| product designation | Power supply SITOP PSU4200 |
| type of current supply | 24 V/5 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 | 2.5 A |
| input current: at rated input voltage 120 V | 2.1 A |
| input current: at rated input voltage 200 V | 1.4 A |
| input current: at rated input voltage 230 V | 1.25 A |
| input current: at rated input voltage 240 V | 1.2 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 | 35 mV |
| voltage peak: maximum | 240 mV |
| voltage peak: typical | 30 mV |
| display version for normal operation | Green LED for 24 V OK |
| type of signal at output | Signal contact (signal load capacity: 5 mA) for DC 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 | 210 ms |
| voltage increase time of the output voltage: maximum | 500 ms |
| output current: rated value | 5 A |
| output current: rated range | 0 ... 5 A; +60 ... +70 °C: Derating 4%/K |
| supplied active power typical | 120 W |
| bridging of equipment | Yes |
| number of parallel-switched equipment resources for increasing the power | 2 |
| efficiency in percent | 87 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 18 W |
| power loss [W]: during no-load operation maximum | 2.2 W |
| Part number | 6EP3333-3SB00-0AX0 |
|---|---|
| Type designation | PSU4200 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515156239 |
| 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 | 1% |
| relative control precision of the output voltage at load step of resistive load 10/90/10 % typical | 1% |
| 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 | 6 A |
| enduring short circuit current RMS value: typical | 6 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 | 1 580 000 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 | 502.5 kg |
| global warming potential [CO2 eq]: during manufacturing | 13.9 kg |
| global warming potential [CO2 eq]: during operation | 488 kg |
| global warming potential [CO2 eq]: after end of life | 0.41 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 |
| for signaling contact | 13, 14: push-in for 0.2 ... 1.5 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 | 13.9 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 5 A.
The rated operational voltage of PSU4200 is 100–240 input – 24 output V DC.
The rated motor power of PSU4200 is 0.12 kW.
The tariff (HS) code on file for PSU4200 is 85044083.
The EAN (GTIN) of PSU4200 is 4025515156239.
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.