SolaX X3 Three-phase emergency power switch box

SolaX X1 / X3 EPS Box – Emergency Power Switch Box

The SolaX X1 and X3 EPS Box is a smart emergency transfer switch unit that allows the solar system to automatically switch to off-grid operation in the event of a power outage. Working in conjunction with SolaX inverters, the device ensures a continuous power supply to critical loads while simplifying system design and increasing operational reliability.

Automatic switching between grid and off-grid operation

The EPS Box automatically switches between grid and off-grid operation using two built-in contactors. In the event of a power outage, the system quickly disconnects from the grid and, together with the inverter, ensures power supply to selected loads.

The switchover time is only about 0.5 seconds, ensuring operation with minimal interruption in most residential or commercial applications.

Full-home backup support

The system is capable of powering entire households or designated circuits during emergency operation, depending on how the system is configured. This is particularly important for users seeking energy independence or wishing to ensure the operation of critical equipment during a power outage.

Simpler installation with integrated contactors

One of the major advantages of the EPS Box is that its integrated design simplifies wiring and system configuration. There is no need to install separate contactors or complex controls, as these functions are already built-in.

This means faster installation and fewer opportunities for errors.

X1 vs. X3 – for single-phase and three-phase systems

The main difference between the two models is the type of system:

• X1 EPS Box:
   designed for single-phase systems
  typically for residential applications
• X3 EPS Box:
   designed for three-phase systems
  for higher-power systems and more complex consumption structures

Both versions offer the same functionality, differing only in their network configuration.

Robust design and outdoor use

The EPS Box has an IP65 rating, making it suitable for outdoor installation. The operating range of −20°C to +60°C ensures reliable operation under various environmental conditions.

The compact size and sturdy construction are designed for long-term use.

SOLARKIT Reviews

The SolaX EPS Box is a key accessory for any system where backup operation is important. It is an outstanding solution due to its automatic switchover, simple installation, and ability to power an entire household.

It is recommended for those who not only want to generate power but also want to ensure a power supply in the event of a power outage—whether in a single-phase or three-phase system.