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 6EP3321-6SB10-0AY0 is a LOGO!Power stabilized power supply that converts a 100-240 V AC (or 110-300 V DC) wide-range input into a regulated 15 V DC output at 1.9 A, adjustable from 10.5 to 16.1 V via potentiometer. It is short-circuit proof, reaches 83.4% efficiency, and mounts directly on a DIN rail in a 36 mm enclosure.
At 1.9 A / 28.5 W, this sits above the 0.9 A LOGO!Power variant and covers a LOGO! base module plus a handful of relay coils or small actuators from one output. The 15 V nominal output adjusts down to 10.5 V or up to 16.1 V via potentiometer, useful for matching a load's actual operating window rather than running it at a fixed 15 V. The wide 100-240 V AC input, with an 85-264 V full-scale range, and Class II construction keep it interchangeable across regions without rewiring the input side.
Powers 15 V DC control loads - relay coils, small actuators, LOGO! logic modules - directly from mains AC or DC, where the lower-current LOGO!Power units do not cover the higher current draw.
| product brand name | LOGO!Power |
|---|---|
| product type designation | LOGO!Power |
| product designation | Power supply LOGO!Power |
| type of current supply | 15 V/1.9 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 | 240 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 | 240 V |
| supply voltage: at 60 Hz | 100 V |
| line frequency | 50/60 Hz |
| wide range input | Yes |
| overvoltage overload capability | 300 V AC for 1 s |
| buffering time for rated value of the output current in the event of power failure minimum | 40 ms |
| operating condition of the mains buffering | at Vin = 187 V |
| input current: at rated input voltage 120 V | 0.63 A |
| input current: at rated input voltage 230 V | 0.33 A |
| current limitation of inrush current at 25 °C maximum | 25 A |
| I2t value maximum | 0.8 A2·s |
| fuse protection type | internal |
| fuse protection type in the feeder | Recommended miniature circuit breaker: from 6 A characteristic B or from 2 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 | 15 V |
| output voltage: at output 1 at DC rated value | 15 V |
| output voltage: at output 1 at DC | 15 V |
| output voltage adjustable | Yes; via potentiometer |
| adjustable output voltage | 10.5 ... 16.1 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 | 30 mV |
| voltage peak: maximum | 300 mV |
| voltage peak: typical | 50 mV |
| display version for normal operation | Green LED for output voltage OK |
| behavior of the output voltage when switching on | No overshoot of Vout (soft start) |
| response delay maximum | 0.5 s |
| voltage increase time of the output voltage: typical | 100 ms |
| output current: rated value | 1.9 A |
| output current: rated range | 0 ... 1.9 A; +55 ... +70 °C: Derating 2%/K |
| supplied active power typical | 28.5 W |
| bridging of equipment | Yes |
| number of parallel-switched equipment resources for increasing the power | 2 |
| Part number | 6EP3321-6SB10-0AY0 |
|---|---|
| Type designation | LOGO!Power |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515154822 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
| efficiency in percent | 83.4 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 5.7 W |
| power loss [W]: during no-load operation maximum | 0.3 W |
| 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 at load step of resistive load 10/90/10 % typical | 2% |
| 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 | < 60 V |
|---|---|
| property of the output short-circuit proof | Yes |
| design of short-circuit protection | Constant current characteristic |
| typical | 2.5 A |
| overcurrent overload capability: when switching on | 150% Iout rated typ. 200 ms |
| overcurrent overload capability: in normal operation | overload capability 150% Iout rated typ. 200 ms |
| enduring short circuit current RMS value: maximum | 2.5 A |
| measuring point for output current | Yes; 50 mV =^ 1.9 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 II (without protective conductor) |
| 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 |
| certificate of suitability: SEMI F47 | Yes |
| type of certification: CB-certificate | Yes |
| MTBF at 40 °C | 2 938 542 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) | Yes |
| Marine classification association: Det Norske Veritas (DNV) | Yes |
| Marine classification association: Lloyds Register of Shipping (LRS) | Yes |
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 158.2 kg |
| global warming potential [CO2 eq]: during manufacturing | 2.3 kg |
| global warming potential [CO2 eq]: during operation | 155.8 kg |
| global warming potential [CO2 eq]: after end of life | 0.08 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 | screw terminal |
|---|---|
| at input | L, N: 1 screw terminal each for 0.5 ... 2.5 mm2 single-core/finely stranded |
| at output | +, -: 1 screw terminal each for 0.5 ... 2.5 mm2 |
| for auxiliary contacts | - |
| width × height × depth of the enclosure | 36 × 90 × 53 mm |
|---|---|
| installation width × mounting height | 36 mm × 130 mm |
| required spacing: top | 20 mm |
| required spacing: bottom | 20 mm |
| required spacing: left | 0 mm |
| required spacing: right | 0 mm |
| fastening method | Snaps onto DIN rail EN 60715 35x7.5/15, direct mounting in different mounting positions |
| 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 | 2.3 kg |
|---|
| Net weight | 0.12 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 0.62 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 LOGO!Power is 1.9 A.
The rated operational voltage of LOGO!Power is 100–240 V AC.
The rated motor power of LOGO!Power is 5.7 W kW.
The tariff (HS) code on file for LOGO!Power is 85044083.
The EAN (GTIN) of LOGO!Power is 4025515154822.
LOGO!Power 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.