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4RB12003EJ508K
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4RB12003EJ508K
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SIEMENS
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4RB12003EJ508K - 20 kVAR Power Capacitor, 480V AC, 50 Hz, 3-Phase - Siemens

Cat No. 4RB12003EJ508K
Category Capacitors
Stock In Stock
Condition Brand New, Sealed Packaging
Product Type Capacitors
Please contact us for the exact delivery timeline

In Stock — 3 Qty

Quantity Expected Delivery
3 Units 25 Business Days

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Technical Specification

SIEMENS 4RB12003EJ508K Capacitors Technical Specification

Capacitors
Duty Heavy Duty
Phase 3
Rated Voltage 480Vac
Rating Kvar 20
Type Cylinderical Type

Product Details

Siemens 4RB12003EJ508K - 20 kVAR Power Capacitor, 480V AC, 50 Hz, 3-Phase. We are dedicatedly involved in providing an excellent quality products at Electrihub.

Product Dimensions

SIEMENS 4RB12003EJ508K dimensions and weight

Dimensions (L × W × H)
Length 31.1 cm
Width 11.6 cm
Height 11.5 cm
Weight
Net Weight 1.9 kg

Dimensions are approximate. For precise dimensional drawings, contact us.

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Product Overview

Siemens 4RB12003EJ508K - 20 kVAR Power Capacitor, 480V AC, 50 Hz, 3-Phase. We are dedicatedly involved in providing an excellent quality products at Electrihub.

Frequently Asked Questions for 4RB12003EJ508K

Yes. RAS Electrihub Private Limited operates as an ISO-certified organization, ensuring quality sourcing, authentic products, and standardized procurement and delivery processes.
Yes. RAS Electrihub Private Limited issues GST-compliant invoices and also supports PO-based invoicing for businesses, contractors, and organizations across India.
Yes. RAS Electrihub Private Limited provides PAN India delivery with reliable logistics, safe packaging, and doorstep delivery across all states and union territories.
The SIEMENS 4RB12003EJ508K is an industrial 3-phase power factor correction capacitor rated at 20.0 kVAr at 480V AC, 50 Hz. Built in a SIECAP Super Heavy Duty (SHD) Cylindrical Aluminum Can with an M12 bottom threaded mounting stud, it draws a nominal rated current of approximately 24.06 A. Engineered specifically for the Indian electrical environment, it complies rigorously with Indian Standards IS 13340 / IS 13341 as well as international standards IS/IEC 60831-1 and IS/IEC 60831-2. It carries BIS certification and is designed for continuous duty in ambient temperatures up to 55°C (Temperature Class D), accommodating ambient temperature spikes common in Indian panel enclosures. Electrihub India supplies this genuine SIEMENS unit with full manufacturer test certificates.
In Indian low voltage power distribution, the nominal line-to-line grid voltage is 415V at 50 Hz. The SIEMENS 4RB12003EJ508K is engineered for harmonic-rich Indian installations utilizing 7% detuned filter reactors at 415V 50 Hz. The 480V insulation prevents dielectric breakdown caused by the fundamental voltage boost and harmonic voltage distortion present in VFD-heavy facilities. When connected across 415V without a reactor, the unit produces ~14.94 kVAr [20 × (415/480)²]. When integrated with a matching 7% detuned reactor in an APFC panel, it delivers an effective clean output of ~17.8 to 18.0 kVAr while blocking 5th harmonic amplification. This elevated voltage ceiling protects the capacitor against continuous grid overvoltages and harmonic voltage distortion, preventing nuisance tripping, dielectric breakdown, and loss of capacitance.
The SIEMENS 4RB12003EJ508K utilizes self-healing metallized polypropylene (MPP) film with heavy zinc-alloy edge-thickened metallization and wavy-cut geometry to minimize dielectric stress and optimize current carrying capability. For fail-safe protection, it incorporates an integrated 3-phase tear-off overpressure disconnector mechanism that mechanically disconnects all internal winding elements simultaneously in the event of internal fault gas pressure buildup, preventing case explosion or rupture. Furthermore, as mandated by Indian standards, it includes pre-fitted ceramic discharge resistor modules that safely bleed down residual voltage from peak to less than 50V within 60 seconds of de-energization, ensuring complete operator safety during panel maintenance.
Integrating the SIEMENS 4RB12003EJ508K into Automatic Power Factor Correction (APFC) panels enables Indian industrial and commercial facilities to achieve near-unity power factor (0.98 to 0.999), directly eliminating severe DISCOM low-power-factor surcharges and maximizing kVAh billing incentives enforced by state utilities (such as MSEDCL, TANGEDCO, UPPCL, BESCOM, and Torrent Power). For reliable switching, each 4RB12003EJ508K step must be controlled via dedicated capacitor-duty contactors with pre-charging damping resistors (such as Siemens 3TS series or Schneider TeSys LC1D•K) or thyristor switching modules for high-speed dynamic loads. APFC panel builders should ensure minimum 30 mm phase-to-phase separation, vertical mounting orientation, and adequate louvers or exhaust fans to keep internal enclosure temperatures within allowable limits.
Electrihub India (electrihub.in) is India's leading specialized B2B electrical e-commerce platform for genuine switchgear, power quality, and automation products. When sourcing the SIEMENS 4RB12003EJ508K through Electrihub India, buyers receive 100% brand-new, factory-sealed products directly traceable to authorized manufacturer channels, backed by full manufacturer warranty. Electrihub India provides GST-compliant tax invoices enabling full input tax credit (ITC) claims, competitive wholesale B2B pricing, in-house technical sizing assistance for APFC systems, and pan-India express doorstep delivery across all industrial hubs including Delhi-NCR, Mumbai-Pune, Chennai, Bengaluru, Ahmedabad, Hyderabad, and Kolkata.

Reviews & Ratings

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Steven Ward Sep 18, 2026

Integrated this SIEMENS 4RB12003EJ508K capacitor into our secondary distribution switchgear. It handles continuous harmonic load without any overheating or capacitance drift. Sourcing switchgear components online can be hit or miss, but Electrihub provided authentic hardware, proper test documentation, and seamless overseas shipping.

Jacob Torres Sep 18, 2026

Delivered on time and packaged with utmost care. The 4RB12003EJ508K SIEMENS capacitor arrived without a single scratch or bent lug. Electrihub provided real-time tracking details, making panel assembly scheduling on our end much smoother.

Ajay Gaikwad Sep 18, 2026

Superb delivery service from Electrihub India. Sourced SIEMENS 4RB12003EJ508K for an urgent site breakdown. The courier delivered right to our plant security gate well before the scheduled commitment. Excellent logistics support.

Srinivasan Garg Sep 18, 2026

The terminal design on the 4RB12003EJ508K allows clean dressing of 25 sq mm copper cables with ample phase-to-phase clearance. Mounted with detuned reactors without any hassle. Electrihub India provided exact dimensional data on their portal which made panel engineering effortless.

Related Categories

Power Monitoring & PF Correction Active Harmonic Filter APFC Capacitors Detuned Filter Reactor Digital Meters Digital Meters Accessories Thyristor Switch Module

Tags

# 4RB12003EJ508K # 20 kVAR # Power Capacitor # 480V AC # 50 Hz # 3-Phase # Siemens # Siemens 4RB12003EJ508K # Electrihub
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