AC Box | AC Connection Box
for PV Systems up to 630 A
Modular AC connection box for safe inverter feed-in to the low-voltage network – compliant with EN 61439.
AC Box for Photovoltaics – Safe Grid Feed-In
The Q3 AC Box connects photovoltaic inverters safely and in compliance with standards to the grid connection point or transformer.
As a high-performance AC connection box, it provides:
The AC Box is specifically designed for commercial and industrial PV systems.
AC Box Variants | 160 A to 630 A
The AC Box is available in the following rated currents:
Depending on the project, busbar cross-section, NH size, SPD design, and cable entries are adapted.
Typical features:
■ IP66 enclosure (indoor or outdoor)
■ Copper busbar system
■ Tool-operated PEN separation point
■ SPD 3+1 configuration for TN-C-S
Technical Features of the Q3 AC Box
AC Box for TN-C and TN-C-S Networks
The Q3 AC Box is designed for the following network types:
The PEN separation point is executed in compliance with standards and clearly marked.
The entire AC connection box is manufactured and tested according to EN 61439.
Project-Specific Configuration Instead of Standard Solution
Each AC Box is tailored to the specific PV project.
Planning parameters:
This results not in a standard AC Box, but in a technically appropriate solution for your project.
Made in Germany – Development & Manufacturing
The Q3 AC Box is developed and manufactured in Germany.
Each AC connection box receives:
AC Connection Box Project Request
Would you like to have an AC connection box designed for your specific project, have technical details reviewed, or select the appropriate configuration for your photovoltaic or storage system?
Using the request form below, we capture all relevant project data in a structured and traceable manner.
You are welcome to send circuit diagrams, grid requirements, protection concepts, or other technical documentation directly. Based on this, we review the electrical parameters, dimension busbars, protective devices, and connection points, and design the AC Box to match your project.
AC Connection Box Project Request
Project-specific design of AC connection boxes for grid connection, feed-in points, and storage solutions.
AC Box Technical Documentation
Data sheets, circuit diagrams, certificates, and technical documentation for AC distribution and transfer points.
AC Connection Box Technology
Overview of technical designs and configuration options for the AC Box for different network types and power ranges.
Q3 DC Connection Technology
Complementary DC generator junction boxes and string boxes for a coordinated complete system