[Pre-order] Sunpura GridBox – On-Grid Parallel Box for S2400/S4800/S3000/S6000/U8000 | Connect up to 6 batteries in parallel | Single-phase & three-phase | Central power control

The Sunpura GridBox is the central connection unit for customers who already use one or more Sunpura S2400 storage units and want to upgrade their system to a higher performance level.

While individual S2400 devices operate decentrally, the GridBox enables a bundled, coordinated parallel connection of up to six S2400 units. This transforms several individual devices into a centrally controlled energy system – suitable for single-phase and three-phase applications, higher loads, and better utilization of stored solar energy.

According to product documentation, the GridBox supports up to 6 × S2400 in parallel operation, with a system representation of 14.4 kW bidirectional inverter power, 57.6 kWh total capacity, and 12 kW PV input. The documentation also shows separate connection concepts for Single-Phase and Three-Phase Wiring, as well as a 7 kW Single-Phase Load Output, 11 kW / 22 kW Three-Phase Load Output and 22 kW bidirectional grid power.

Why Sunpura GridBox?

1. Connect up to 6 Sunpura S2400 in parallel
The GridBox connects multiple S2400 storage units into a coordinated system. Ideal for users who have already started with one S2400 and want to expand their system step by step.

2. From decentralized to centrally controlled
Individual S2400 units can operate distributed throughout the house. With the GridBox, they become a central network that coordinates power and can better supply connected consumers.

3. Suitable for single-phase and three-phase applications
The GridBox supports both single-phase and three-phase connection concepts. This makes it particularly suitable for households that want to better integrate multiple circuits or phase-crossing consumers.

4. More power for larger consumers
Whether it's a heat pump, wallbox, workshop, larger household appliances, or multiple simultaneous loads: The GridBox was developed for users for whom a single S2400 unit is no longer sufficient.

5. Plug-and-play system logic, but professional installation required
The system logic remains simple: connect S2400 units, use the GridBox as a connection hub, and make energy more centrally available. However, the electrical integration into the house installation, distribution board, and grid connection should be checked and carried out by a qualified electrician.