Solis 20 kW Three-Phase String Solar Inverter

20kW · Three-phase · Dual MPPT · 98.7% efficiency

Built for commercial plants and solar farms
IP66 — resistant to eastern Iran's dust
98.7% efficiency — lowest losses in class
Competitive pricing at project scale

Reference wholesale price

65,000,000 Toman/ unit

Minimum order quantity

5 units

This is an approximate reference price. The firm price depends on quantity, the day's exchange rate and shipping terms, and is stated on the proforma.

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This product is sold wholesale only, from the stated minimum order quantity upwards.

About this product

Solis industrial inverter for commercial plants and solar farms. 98.7% efficiency and an IP66 rating for outdoor installation in the dusty conditions of eastern Iran. Solis is the world's third-largest string-inverter manufacturer and its price-to-quality ratio is highly competitive at utility scale.

SKU: SA-INV-SL20K
Manufacturer part no.: S5-GC20K
Warranty: 5-year factory warranty — extendable to 10 years
Unit weight: 25 kg

Certified authenticity · Direct import · Nationwide delivery

Wholesale order terms

Minimum order quantity: 5 units
Units per pallet: 8 unit
Container load: 160 — 40ft HQ container (20 pallets)
Lead time: From stock: 2–5 working days · Factory order: 3–45 days
HS tariff code: 8504.40.90
Country of origin: China

Tiered pricing

Base wholesale5+ units
Retailer20+ units
Project100+ units

Request wholesale pricing

Full technical specifications

Solis 20 kW Three-Phase String Solar Inverter

IEC 62109-1IEC 62109-2EN 50549CEVDE 4110

Full technical specifications — Solis 20 kW Three-Phase String Solar Inverter
Rated AC output power	20,000 W
Grid type	Three-phase 400 V / 50 Hz
Number of MPPT trackers	2
Maximum efficiency	98.7%
Maximum DC input power	30,000 W
Maximum DC input voltage	1100 V
MPPT voltage range	200–1000 V
DC string inputs	4 strings (2 per MPPT)
DC arc-fault protection	Integrated AFCI
Ingress protection	IP66 — outdoor rated
Dimensions	545 × 505 × 228 mm
Weight	25 kg
Monitoring	Wi-Fi / RS485 — SolisCloud portal

Specifications follow the manufacturer's published datasheet and may vary by production revision. The exact model revision is confirmed on the proforma.

Frequently asked questions

Solis 20 kW Three-Phase String Solar Inverter

How many units does a 100 kW plant need?

Five 20 kW units, or six at a lower DC/AC ratio to reduce the risk of a full-plant stoppage. A multi-unit layout offers higher availability and simpler servicing than one central inverter.

What is the minimum wholesale order?

One pallet for panels, five units for inverters and batteries, and five sets for mounting structures. Container-scale orders get tiered pricing and dedicated payment terms.

How are wholesale prices quoted?

Wholesale pricing depends on quantity, the day's exchange rate and shipping terms, so we do not publish fixed prices. Submit an RFQ and you will receive an official proforma within one working day.

How is nationwide delivery handled?

We ship from the Mashhad warehouse to every province via contracted freight carriers with transit insurance. Goods leave on their original factory pallets and packaging.