SMA STP 4.0-3AV-40, 3-phase

The SMA STP 4.0-3AV-40 3-phase inverter is a high-performance solution for residential and small commercial solar installations. This transformerless inverter combines efficiency, reliability, and advanced features to maximize your solar energy system's output.

• Impressive 98.2% peak efficiency for optimal energy conversion
• Robust 4000W rated power with 4000VA max AC output
• Wide MPP DC voltage range of 175-800V for flexible string configurations
• Compact design measuring 435 x 470 x 176 mm and weighing only 17 kg
• Durable IP65 ingress protection for indoor and outdoor installations
• Convection cooling for silent operation with just 30 dB(A) noise emission
• Versatile communication options including WLAN, Ethernet, and RS485
• Smart Connected features for automatic monitoring and remote diagnostics
• Comprehensive grid monitoring and protection functions
• Adjustable power factor from 0.8 to 1 for grid stability
• Wide operating temperature range of -25°C to +60°C
• Multiple interfaces including Modbus, Webconnect, and SMA Data
• Compliant with international standards and certifications
• LFSM-O capability for grid frequency stabilization

The SMA STP 4.0-3AV-40 is an ideal choice for those seeking a reliable, efficient, and feature-rich solar inverter. Its advanced grid management capabilities, coupled with smart monitoring and diagnostic functions, ensure optimal performance and longevity of your solar power system. Whether you're installing a new system or upgrading an existing one, this inverter offers the perfect balance of power, efficiency, and intelligent features to maximize your renewable energy investment.