Main Components of a PLC System: Complete Guide for Engineers
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The Siemens 6EP1331-5BA00 SITOP PSU100C converts a 100-230 V AC (or 110-300 V DC) input into a stabilized 24 V DC output at 0.6 A, delivering 14 W typical. It fits a 22.5 mm DIN-rail footprint and reaches 82% efficiency for compact control-cabinet loads such as sensors, relays, or a single PLC input card.
The 0.6 A rated output is the smallest current step in the PSU100C range, so it fits a single sensor/relay branch or one PLC input card rather than a full I/O rack — for larger loads, a higher-current PSU100C or PSU200 unit is the better fit. The wide 100-300 V combined AC/DC input range means one part number covers both mains AC and 110-300 V DC control-voltage buses without a separate SKU. Output voltage is fixed at 24 V with no potentiometer trim, which keeps wiring simple where the load never needs adjustment, unlike the adjustable-output PSU3400/PSU3800 units.
Single sensor or relay circuits, one PLC input module, and small machine-control cabinets with a light 24 V DC load.
| product brand name | SITOP |
|---|---|
| product type designation | PSU100C |
| product designation | Power supply SITOP PSU100C |
| type of current supply | 24 V/0.6 A |
| type of the power supply network | 1-phase AC or DC |
|---|---|
| phase number | 1 |
| voltage curve at input | AC/DC |
| supply voltage at AC: minimum rated value | 100 V |
| supply voltage at AC: maximum rated value | 230 V |
| supply voltage at AC: initial value | 85 V |
| supply voltage at AC: full-scale value | 264 V |
| input voltage at DC | 110 ... 300 V |
| supply voltage: at 50 Hz | 230 V |
| supply voltage: at 60 Hz | 100 V |
| line frequency | 50/60 Hz |
| wide range input | Yes |
| overvoltage overload capability | 2.3 × Vin rated, 1.3 ms |
| buffering time for rated value of the output current in the event of power failure minimum | 20 ms |
| operating condition of the mains buffering | at Vin = 230 V |
| input current: at rated input voltage 100 V | 0.28 A |
| input current: at rated input voltage 230 V | 0.18 A |
| current limitation of inrush current at 25 °C maximum | 28 A |
| I2t value maximum | 0.7 A2·s |
| fuse protection type | internal |
| fuse protection type in the feeder | Recommended miniature circuit breaker: from 16 A characteristic B or from 10 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 | No; - |
| relative overall tolerance of the voltage | 3% |
| relative control precision of the output voltage: on slow fluctuation of input voltage | 0.1 % |
| residual ripple: maximum | 200 mV |
| residual ripple: typical | 40 mV |
| voltage peak: maximum | 300 mV |
| voltage peak: typical | 20 mV |
| display version for normal operation | Green LED for output voltage OK |
| behavior of the output voltage when switching on | Overshoot of Vout approx. 5 % |
| response delay maximum | 1 s |
| voltage increase time of the output voltage: typical | 25 ms |
| output current: rated value | 0.6 A |
| output current: rated range | 0 ... 0.6 A |
| supplied active power typical | 14 W |
| short-term overload current: at short-circuit during operation typical | 1 A |
| bridging of equipment | No |
| Part number | 6EP1331-5BA00 |
|---|---|
| Type designation | PSU100C |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515152590 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
| efficiency in percent | 82 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 2.6 W |
| power loss [W]: during no-load operation maximum | 0.75 W |
| relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical | 0.1 % |
|---|---|
| relative control precision of the output voltage at load step of resistive load 10/90/10 % typical | 3% |
| setting time: load step 10 to 90% typical | 3 ms |
| setting time: load step 90 to 10% typical | 3 ms |
| design of the overvoltage protection | < 60 V |
|---|---|
| property of the output short-circuit proof | Yes |
| design of short-circuit protection | Electronic shutdown, automatic restart |
| typical | 0.7 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 | 3.5 mA |
| leakage current: typical | 0.4 mA |
| protection class IP | IP20 |
| standard: for emitted interference | EN 55022 Class B |
|---|---|
| standard: for mains harmonics limitation | not applicable |
| 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; cURus- Recognized (UL 60950, CSA C22.2 No. 60950), File E151273, NEC class 2 (acc. to UL 1310) |
| certificate of suitability: EAC approval | Yes |
| certificate of suitability: NEC Class 2 | Yes; according to UL1310, File E151273 |
| type of certification: CB-certificate | Yes |
| MTBF at 40 °C | 3 910 833 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 | 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 |
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 73.5 kg |
| global warming potential [CO2 eq]: during manufacturing | 2.3 kg |
| global warming potential [CO2 eq]: during operation | 71.1 kg |
| global warming potential [CO2 eq]: after end of life | 0.08 kg |
| ambient temperature: during operation | -20 ... +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 | screw terminal |
|---|---|
| at input | L, N, PE: Removable screw terminal, each for 1 x 0.5 ... 2.5 mm2 |
| at output | +: 1 screw terminal for 0.5 ... 2.5 mm2; -: 2 screw terminals for 0.5 ... 2.5 mm2 |
| for auxiliary contacts | - |
| width × height × depth of the enclosure | 22.5 × 80 × 100 mm |
|---|---|
| installation width × mounting height | 22.5 mm × 180 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 |
| electrical accessories | Removable spring-type terminal 6EP1971-5BA00 |
|---|
| 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 | 2.3 kg |
|---|
| Net weight | 0.12 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 0.62 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | Low 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 PSU100C is 0.6 A.
The rated operational voltage of PSU100C is 100–230 V AC.
The rated motor power of PSU100C is 2.6 W kW.
The tariff (HS) code on file for PSU100C is 85044083.
The EAN (GTIN) of PSU100C is 4025515152590.
PSU100C 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.