The Fronius Symo 8.2-3-M Light is a high-performance three-phase photovoltaic inverter designed for medium-sized residential and small commercial solar systems.

The Light version offers essential functionality without integrated communication interfaces, making it a reliable and straightforward solution for installations where advanced connectivity is not required.

Built with transformerless technology, this inverter ensures high efficiency and optimized energy conversion. The three-phase output provides balanced power distribution, improving system stability and grid integration.

Equipped with two independent MPPT trackers, it maximizes energy yield even in systems with multiple string orientations.

⚙️ Identification Data

• Brand: Fronius
• Model: Symo 8.2-3-M Light
• Part Number: 4,210,039,001
• Type: Three-phase string inverter (transformerless)

🔌 AC Side (Grid Output)

• Nominal voltage: 220/380 V – 230/400 V
• Frequency: 50 / 60 Hz
• Grid system: 3~ NPE (three-phase with neutral)
• Nominal current:
  • 12.4 A (380 V)
  • 11.9 A (400 V)
• Maximum current: 13.5 A
• Rated apparent power: 8200 VA
• Maximum active power:
  • 7380 W (cos φ = 0.9)
  • 8200 W (cos φ = 1)
• Power factor: 0.85 – 1 (adjustable inductive/capacitive)

☀️ DC Side (PV Input)

• MPPT voltage range: 267 – 800 V
• DC voltage range: 150 – 1000 V
• Number of MPPTs: 2 independent trackers
• Maximum current per MPPT: 16.0 A + 16.0 A
• Short-circuit current (Isc): 48.0 A

🛡 Protection & Certifications

• Protection rating: IP65 (outdoor installation)
• Safety class: Class I
• Overvoltage category: OVC 2 / OVC 3

Compliance:

• IEC 62109-1 / -2
• EN 61000-3-2 / -3
• EN 61000-6-2 / -3
• EN 62233
• CEI 0-21
• VDE-AR-N 4105

🧠 Key Features

✔ High-efficiency transformerless inverter
✔ Three-phase output for balanced energy distribution
✔ Dual MPPT for maximum energy optimization
✔ Wide DC voltage range for flexible system design
✔ Compact and robust design for indoor/outdoor use
✔ Light version without integrated communication modules

🏭 Applications

Ideal for:

✔ Advanced residential three-phase PV systems
✔ Small commercial photovoltaic installations
✔ Systems with multiple string orientations
✔ Installations requiring high stability and performance

💡 Typical Use Case

Perfect for photovoltaic systems up to ~8 kW, where efficiency, reliability, and three-phase balance are essential.

🚀 Commercial Summary

The Fronius Symo 8.2-3-M Light is a powerful and reliable 8.2kVA three-phase inverter, designed for demanding photovoltaic installations. With dual MPPT, wide input range, and IP65 protection, it offers an efficient and durable solution for residential and commercial solar systems.