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 4RB2050-3EA50 is a power supply from the SENTRON/SIRIUS 4RB2 series. Power capacitor PHICAP MKP 400 V 5.0 kVAr. Supplied by Stoklink for industrial and commercial low-voltage applications.
The Siemens 4RB2050-3EA50 is used in industrial control panels, distribution boards and automation systems. As part of the Siemens 4RB2 range it integrates with compatible SENTRON/SIRIUS components for a coordinated low-voltage installation. Genuine Siemens product supplied by Stoklink with fast dispatch from Türkiye.
| type of internal interconnection | D (Delta) |
|---|---|
| type of certification | CE |
| type of enclosure material | Extruded round aliuminum can with stud |
| type of mechanical safety | Overpressure disconnector (3-phase) |
| standard | IEC 60831-1 / -2 |
| capacitor voltage (rms value) rated value | 400 V |
|---|---|
| capacitor voltage (rms value) maximum | VN +10% (up to 8 h daily), VN +15% (up to 30 min daily), VN +20% (up to 5 min daily), VN +30% (up to 1 min daily) |
| operating frequency 1 rated value | 50 Hz |
| operating frequency 2 rated value | 60 Hz |
| capacity rated value | 33 µF |
| relative negative tolerance of the capacity rated value | 5% |
| relative positive tolerance of the capacity rated value | 1% |
| reactive power of the capacitor at 50 Hz rated value | 5 kvar |
| reactive power of the capacitor at 60 Hz rated value | 6 kvar |
| clearance minimum | 10.4 mm |
| creepage distance minimum | 15.4 mm |
| type of dielectric | Self-healing metallized polypropylene film |
| filler | filled with Non PCB, Soft biodegradable resin |
| safety features of the integrated discharge resistors | Discharge time ≤ 180 s to 75 V or less for safe discharging |
| voltage test between the terminals | 2.15 x VN at 50Hz / 2 s |
| voltage test between the terminals and housing | 3000 V AC / 50Hz, 10s |
| capacitor voltage (rms value) maximum note | VN +10% (up to 8 h daily), VN +15% (up to 30 min daily), VN +20% (up to 5 min daily), VN +30% (up to 1 min daily) |
| inrush current peak of the capacitor | 200 x In |
|---|---|
| short-circuit current maximum | 10 kA |
| capacitor current at 50 Hz rated value | 7.2 A |
| capacitor current at 60 Hz rated value | 8.6 A |
| terminal current maximum | -9 999 A |
| Part number | 4RB2050-3EA50 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4047624057290 |
| ETIM class | EC001516 |
| eCl@ss | 27260290 |
| protection class IP of the terminal | IP00 |
|---|
| capacitor losses [W] in dielectric per kvar | 0.2 W |
|---|---|
| capacitor losses [W] per kvar total | 0.45 W |
| operating frequency: 1 rated value | 50 Hz |
| operating frequency: 2 rated value | 60 Hz |
| type of cooling | natural or forced air cooling |
|---|---|
| type of enclosure material | Extruded round aliuminum can with stud |
| type of mechanical safety | Overpressure disconnector (3-phase) |
| product component external discharge resistor | Yes |
| type of connecting terminal | PhiCap_Fast-On |
|---|---|
| tightening torque maximum | -9 999 N·m |
| tightening torque of the screw for securing the equipment maximum | 10 N·m |
| connectable conductor cross-section of the terminal for copper conductor stranded without cable lug | -9 999 m2 |
| length of the capacitor | 129 mm |
|---|---|
| length of the capacitor with connections maximum | 143.3 mm |
| total length of the capacitor with mounting and connections maximum | 159.3 mm |
| fastening method | Threaded bolt M12 |
| diameter of the capacitor | 63.5 mm |
| diameter of the capacitor maximum | 63.5 mm |
| mounting position | Upright |
| installation altitude maximum | 4 000 m |
|---|---|
| MTBF at temperature class -40/C maximum | 135 h |
| MTBF at temperature class -40/D maximum | 100 h |
| MTBF at temperature class -40/60 maximum | -9 999 s |
| standard | IEC 60831-1 / -2 |
| relative humidity without condensation maximum | 95 % |
| temperature classes of the capacitors | Class -40/D: Max. short time: +55 °C, max. mean 24h: +45 °C; max mean 1 year: +35 °C; lowest temperature: -40 °C |
| ambient temperature during operation: minimum | -40 °C |
| ambient temperature during operation: maximum | 55 °C |
| ambient temperature during storage: minimum | -40 °C |
| ambient temperature during storage: maximum | 85 °C |
| Net weight | 0.903 kg |
|---|---|
| Package dimensions | 310 × 235 × 208 mm |
| Country of origin | IN |
| Shipping weight | 1.403 kg |
| Ships from | Türkiye |
| Dispatch | 16 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 31 Oct 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated operational voltage of 4RB2050-3EA50 is 400 V AC.
The EAN (GTIN) of 4RB2050-3EA50 is 4047624057290.
4RB2050-3EA50 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.