Fronius Primo 4.0-1 Light 4kW Single-Phase Solar Inverter

Product Description

The Fronius Primo 4.0-1 Light 4kW Single-Phase Solar Inverter is the economical alternative for households seeking a powerful self-consumption system that is easy to integrate. It maintains two MPPT, a wide DC range, and SnapINverter IP65 design, but omits WLAN/Ethernet and web server to reduce CAPEX when monitoring is centralized via a meter or EMS through RS-485.

Main Features

• Nominal power: 4 kW single-phase with high efficiency (η max. ≈98%; ηEU ≈97%).
• 2 MPPT (2+2 inputs) with DC range 150–1000 V and Umpp 200–800 V.
• SuperFlex design for roofs with two slopes or different orientations.
• Safety: DC isolator, insulation monitoring, and reverse polarity protection.
• IP65 chassis with active ventilation and front access to terminals (SnapINverter).
• Light connectivity: RS-485 Modbus RTU (SunSpec) and digital I/O for EMS/SCADA.

Advantages or Benefits

• Optimized total cost without sacrificing production or protections.
• Quick installation and maintenance thanks to SnapINverter.
• Ready for zero feed-in with smart meter and dynamic power control.
• Reliable outdoor operation (IP65) and good thermal performance.

Purpose or Applications

Single-phase homes, roofs with multiple slopes, projects with zero feed-in and centralized monitoring via meter/PLC or EMS platform.

Technical Specifications

Compatibilities

RS-485 integration with Fronius Smart Meter (zero feed-in), Fronius Wattpilot (EV charging with surplus), and Fronius Ohmpilot (DHW). Prepared for SPD on internal DIN rail.

Fronius Primo 4.0-1 Light 4kW Single-Phase Solar Inverter combines performance, safety, and simplicity to maximize your home's energy with a limited budget.