Main Components of a PLC System: Complete Guide for Engineers
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The Siemens 6EP1433-0AA00 is a SITOP PSU300E three-phase power supply that converts 400-500 V AC into a stabilized 24 V DC output rated 5 A (120 W). It mounts on a 42 mm-wide DIN rail, holds the output adjustable from 24 to 29 V via potentiometer, and bridges a 50 ms mains dropout at rated load, suited to 24 V loads fed directly from a 400 V three-phase distribution board.
The 6EP1433-0AA00 draws directly from a 3-phase 400-500 V distribution board rather than the single-phase 100-230 V input used by the SITOP PSU100 series, which matters where the panel already has three-phase power and a single-phase tap would add wiring. Output is adjustable to 29 V (up to 120 W) via potentiometer, useful for compensating voltage drop on a long 24 V run or lifting the set point for downstream equipment specifying a slightly higher supply. No internal input fuse is fitted, so the recommended external protection, a 6 A characteristic B or C miniature circuit breaker or an equivalent motor-protective circuit breaker, must be installed in the feeder for the unit to be protected against an upstream fault.
| product brand name | SITOP |
|---|---|
| product type designation | PSU300E |
| product designation | Power supply SITOP |
| type of current supply | 24 V/5 A |
| type of the power supply network | 3-phase AC |
|---|---|
| phase number | 3 |
| voltage curve at input | AC |
| supply voltage at AC: minimum rated value | 400 V |
| supply voltage at AC: maximum rated value | 500 V |
| supply voltage at AC: initial value | 320 V |
| supply voltage at AC: full-scale value | 550 V |
| supply voltage: at 50 Hz | 400 V |
| supply voltage: at 60 Hz | 500 V |
| line frequency | 50/60 Hz |
| wide range input | Yes |
| buffering time for rated value of the output current in the event of power failure minimum | 50 ms |
| operating condition of the mains buffering | at Vin = 400 V |
| input current: at rated input voltage 400 V | 0.36 A |
| input current: at rated input voltage 500 V | 0.29 A |
| current limitation of inrush current at 25 °C maximum | 15 A |
| I2t value maximum | 0.9 A2·s |
| fuse protection type | none |
| fuse protection type in the feeder | Required: 3-pole connected miniature circuit breaker 6 A characteristic B or C or circuit breaker 3RV2011-1DA10 (setting 3 A) or 3RV2711-1DD10 (UL 489) |
| 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 ... 29 V; max. 120 W |
| relative overall tolerance of the voltage | 3% |
| relative control precision of the output voltage: on slow fluctuation of input voltage | 3% |
| residual ripple: maximum | 150 mV |
| residual ripple: typical | 35 mV |
| voltage peak: maximum | 240 mV |
| voltage peak: typical | 70 mV |
| display version for normal operation | Green LED for 24 V OK |
| type of signal at output | Relay contact (NO contact, rating 60 V DC/ 0.3 A) for "24 V OK" |
| behavior of the output voltage when switching on | Overshoot of Vout approx. 3 % |
| response delay maximum | 0.5 s |
| voltage increase time of the output voltage: typical | 10 ms |
| voltage increase time of the output voltage: maximum | 100 ms |
| output current: rated value | 5 A |
| output current: rated range | 0 ... 5 A |
| supplied active power typical | 120 W |
| short-term overload current: on short-circuiting during the start-up typical | 33 A |
| short-term overload current: at short-circuit during operation typical | 28 A |
| duration of overloading capability for excess current: on short-circuiting during the start-up | 140 ms |
| duration of overloading capability for excess current: at short-circuit during operation | 135 ms |
| bridging of equipment | No |
| Part number | 6EP1433-0AA00 |
|---|---|
| Type designation | PSU300E |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515153412 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
| efficiency in percent | 90 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 13 W |
| relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical | 3% |
|---|---|
| relative control precision of the output voltage load step of resistive load 50/100/50 % typical | 5% |
| setting time: load step 50 to 100% typical | 1 ms |
| setting time: load step 100 to 50% typical | 1 ms |
| 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 |
| setting time: maximum | 30 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 | 11 A |
| enduring short circuit current RMS value: maximum | 7.5 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 |
| protection class IP | IP20 |
| standard: for emitted interference | EN 55022 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: EAC approval | Yes |
| certificate of suitability: NEC Class 2 | No |
| type of certification: CB-certificate | No |
| MTBF at 40 °C | 2 389 441 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 |
| ambient temperature: during operation | 0 ... 60 °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 | L1, L2, L3, PE: Removable screw terminal for 0.5 ... 2.5 mm2 single-core/finely stranded |
| at output | +, -: 2 screw terminals each for 0.5 ... 2.5 mm2 |
| for auxiliary contacts | 13, 14 (alarm signal): 1 screw terminal each for 0.5 ... 2.5 mm2 |
| removable terminal at input | Yes |
| removable terminal at output | Yes |
| width × height × depth of the enclosure | 42 × 125 × 125 mm |
|---|---|
| installation width × mounting height | 42 mm × 225 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 |
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|
| Net weight | 0.6 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 1.1 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 PSU300E is 5 A.
The rated operational voltage of PSU300E is 400–500 V AC.
The rated motor power of PSU300E is 13 W kW.
The tariff (HS) code on file for PSU300E is 85044083.
The EAN (GTIN) of PSU300E is 4025515153412.
PSU300E 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.