Main Components of a PLC System: Complete Guide for Engineers
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The Siemens 6EP1331-5BA10 is a SITOP PSU100C single-phase power supply that converts 100-230 V AC (or 110-300 V DC) into a stabilized 24 V DC output rated 1.3 A. It mounts on a 30 mm-wide DIN rail, holds the output within 3% overall tolerance, and bridges a 20 ms mains dropout at rated load, making it suited to small 24 V control circuits with modest current demand.
At 1.3 A rated output and 30 W, the 6EP1331-5BA10 sits at the low-current end of the PSU100C family and fits a single 24 V drop such as a PLC CPU or a handful of contactor coils rather than a fully loaded panel. The output is adjustable from 22.2 to 26.4 V, so the set point can be trimmed to compensate for cable drop on a long 24 V run. Two units can be paralleled to raise available current, and the 20 ms buffering time covers short mains dips without a separate UPS module. Above +60C the output derates 0.8%/K, dropping to 1.2 A at +70C, so enclosure ventilation matters more than current headroom in this rating.
| product brand name | SITOP |
|---|---|
| product type designation | PSU100C |
| product designation | Power supply SITOP PSU100C |
| type of current supply | 24 V/1.3 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 | 0.63 A |
| input current: at rated input voltage 230 V | 0.31 A |
| current limitation of inrush current at 25 °C maximum | 34 A |
| I2t value maximum | 1.2 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 | Yes; via potentiometer |
| adjustable output voltage | 22.2 ... 26.4 V |
| 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 | 25 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 | 0.6 s |
| voltage increase time of the output voltage: typical | 90 ms |
| output current: rated value | 1.3 A |
| output current: rated range | 0 ... 1.3 A; +60 ... +70 °C: Derating 0.8%/K; at +70 °C Iout rated 1.2 A |
| supplied active power typical | 30 W |
| short-term overload current: at short-circuit during operation typical | 3.1 A |
| bridging of equipment | Yes; Start-up with single nominal load only |
| number of parallel-switched equipment resources for increasing the power | 2 |
| Part number | 6EP1331-5BA10 |
|---|---|
| Type designation | PSU100C |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515152606 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
| efficiency in percent | 86 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 4.5 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 | 5 ms |
| setting time: load step 90 to 10% typical | 5 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 | 1.4 A |
| 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 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 | 3 838 624 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 | 126.5 kg |
| global warming potential [CO2 eq]: during manufacturing | 3.2 kg |
| global warming potential [CO2 eq]: during operation | 123.1 kg |
| global warming potential [CO2 eq]: after end of life | 0.12 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 | 30 × 80 × 100 mm |
|---|---|
| installation width × mounting height | 30 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 |
| net weight accessories | 0.17 kg |
| 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 | 3.2 kg |
|---|
| Net weight | 0.17 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 0.67 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
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 1.3 A.
The rated operational voltage of PSU100C is 100–230 V AC.
The rated motor power of PSU100C is 4.5 W kW.
The tariff (HS) code on file for PSU100C is 85044083.
The EAN (GTIN) of PSU100C is 4025515152606.
PSU100C ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.