Average Price of Photovoltaic AC Combiner Box

The typical 2026 FOB China price for a standard PV AC combiner box ranges from approximately $150 to $400 per unit, depending on configuration, voltage rating, and quality certifications.

Price Overview

The cost of a PV AC combiner box is influenced by several factors, including the number of inputs (e.g., 6-in-1 or 8-in-1), voltage rating (400 V, 690 V, 800 V AC), IP protection level (IP65–IP67), and the quality of internal components such as fuses, SPDs, and circuit breakers . Standard configurations for string inverters in utility-scale systems typically fall within the $150–$400 FOB China range for 2026, with higher-end models or custom designs costing more .

Cost Breakdown

The main contributors to the price include:

• Internal DC/AC components (40–55%): SPDs, fuses, fuse holders, load-break switches, MCBs/MCCBs, and copper terminals .
• Raw materials (15–20%): Copper busbars, steel or high-grade plastic enclosures, and internal wiring .
• Enclosure and ingress protection (10–15%): IP gaskets, cable glands, UV-resistant coatings, and locks .
• Certification and compliance (5–10%): IEC 61439-2, TÜV, CE, UL, and RoHS testing costs amortized across units .
• Labor and quality control (8–12%): Skilled wiring, torque-controlled terminal tightening, insulation resistance testing, and IP verification .
• Packaging and export preparation (3–5%): Fumigated cases, labeling, and pallet securing .

Market Considerations

• Prices vary depending on supplier, order volume, and customization. Bulk orders often receive discounts, while specialized features like high-altitude operation or smart monitoring can increase costs .
• Global production is concentrated in China, with some manufacturing in Malaysia, Spain, and Brazil, which affects shipping and lead times .
• Extremely low quotes (e.g., under $50) are generally not recommended, as they may compromise component quality or certification compliance .

Summary

For 2026, a standard PV AC combiner box suitable for string inverters in utility-scale or commercial PV systems typically costs $150–$400 per unit FOB China, with the final price depending on configuration, certifications, and supplier. Understanding the internal cost structure helps in evaluating quotes and avoiding underpriced or overcharged offers .