Used product. The Fronius Primo 4.0-1 Light is a high-performance single-phase photovoltaic inverter designed for residential grid-connected systems. The Light version offers a streamlined configuration without advanced integrated communication interfaces, providing a reliable and cost-effective solution.

Engineered with Fronius technology, this inverter delivers stable energy conversion and optimized performance thanks to dual MPPT inputs, enabling independent management of two PV strings.

With its IP65 protection rating, it is suitable for both indoor and outdoor installations, ensuring durability in various environmental conditions.

⚙️ General Data

• Model: Fronius Primo 4.0-1 Light
• Part Number: 4,210,066,001
• Type: Single-phase string inverter (grid-tie)
• Safety class: Class I
• Protection rating: IP65

🔌 AC Side (Grid Output)

• Nominal voltage (UAC): 220 / 230 V
• Frequency (fAC): 50 / 60 Hz
• Grid configuration: 1~NPE
• Nominal current (IAC nom):
  • 18.2 A (220 V)
  • 17.4 A (230 V)
• Maximum current (IAC max): 18.3 A
• Apparent power (Smax): 4000 VA
• Active power (Pmax): 3600 W (cos φ = 0.9)
• Power factor: 0.85 – 1 (inductive/capacitive adjustable)

☀️ DC Side (PV Input)

• MPPT voltage range (UDC mpp): 210 – 800 V
• Maximum DC voltage: 1000 V
• Number of MPPTs: 2 independent trackers
• Max current per MPPT: 12.0 A + 12.0 A
• Short-circuit current (Isc PV): 36.0 A

🛡 Protections & Standards

• 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 0126-1-1

🧠 Key Features

✔ Single-phase inverter for residential systems up to 4 kVA
✔ Dual MPPT for optimized energy yield
✔ High-efficiency active cooling system
✔ Front display for local monitoring
✔ Compact and robust design
✔ IP65 protection for indoor/outdoor use

🏭 Applications

Ideal for:

✔ Residential photovoltaic systems
✔ Grid-connected single-phase installations
✔ Systems with multiple PV string orientations
✔ Indoor and outdoor installations

📦 Condition

• Used product
• Condition as shown in photos
• Functional testing recommended if not specified