Heavy-Duty Switch Box

Core Functions and Technical Features
Multiple circuit protection mechanisms
The device integrates short-circuit protection, overload protection, over/under voltage protection, and leakage protection. For example, the internal DC fuse can quickly fuse when the short-circuit current reaches dozens of times the rated value, cutting off the fault loop; The circuit breaker is overload protected by an electromagnetic tripper, which automatically trips when the current exceeds a set threshold. Some high-end models are also equipped with intelligent integrated protectors, which can monitor voltage and current in real time, and support remote communication and fault warning.
High-reliability circuit management
Current collection and distribution: Support multiple groups of solar panel inputs, and can integrate multiple DC currents into one or more outputs, which can be connected to the inverter or battery pack to reduce line complexity.
Automatic mode switching: Some models support intelligent switching between on-grid and off-grid modes, such as with an integrated contactor and a hybrid inverter for seamless switching (e.g. Solax X3-EPS BOX).
Anti-reverse connection and lightning protection: Built-in anti-reverse diode to prevent current backfill, and equipped with a surge protector (SPD) to withstand lightning surge impact and protect back-end equipment.
Intelligent monitoring and control
Some devices are equipped with data acquisition modules and human-machine interfaces, which can display system status (such as voltage, current, and load) in real time, and support remote monitoring. For example, Huawei's LUNA2000 series microgrid controller can automatically switch modes and monitor the power loss status of the grid through the on-grid and off-grid switch.

The Core of Household Energy Backup - Off Grid Switch Box 

With our Off Grid Switch Box, you can realize the unlimited potential of the convenient power supply, which will become the center of your home backup system, automatically and intelligently switching the power supply to your home loads, providing uninterrupted power during power outages, intelligent energy management and much more.

Power Outage Automatic Switching

Adapt to all bidirectional portable energy storage systems