FoxESS - EPS-BOX-PRO

FoxESS EPS-BOX-PRO is an advanced, three-phase emergency power supply system designed to work with FoxESS hybrid inverters from the P3, H3, and H3 PRO series. The device automatically switches the installation between grid mode (on-grid) and island (off-grid) modes, providing full backup for the most important circuits in the building – both at home and at work. The robust, metal housing with IP65 protection rating guarantees resistance to external conditions, and natural cooling ensures reliable, quiet operation throughout its entire service life.

Key product features

• Automatic switching between mains power and emergency power supply (EPS) mode, without the need for user intervention.

• Three-phase backup with high maximum EPS output current – up to 63 A per phase.

• Compatibility with a wide range of FoxESS inverters: P3, H3, H3 PRO, P3-S, AIO.

• Metal housing, IP65 rating – resistant to dust, moisture, and harsh outdoor and indoor installation conditions.

• Built-in RS-485 interface (meter) for integration with the inverter and monitoring system.

• Natural cooling – no fan guarantees reliability and quiet operation.

Technical specifications

• Operating mode: automatic on-grid/off-grid switching

• Power supply type: three-phase (220/380, 230/400 VAC, 3L/N/PE)

• Compatibility: FoxESS P3, H3, H3 PRO, P3-S, AIO

• Maximum EPS output current (per phase): 63 A

• Maximum GRID and MEDIA input current (per phase): 25 A

• Communication interface: RS-485

• Cooling: passive, natural

• Dimensions: 550 × 420 × 138.5 mm

• Net/gross weight: 16 kg / 19.3 kg

• Protection rating: IP65

• Mounting: wall-mounted (indoor/outdoor)

• Operating temperature: –25°C ~ +50°C

Applications

EPS-BOX-PRO is recommended for users who expect reliable power protection for their home, business, or industrial facility. The solution is ideal for use with an energy storage system, providing real backup for devices such as heat pumps, servers, alarm systems, and emergency lighting. Thanks to its high electrical parameters, the product can power even the most demanding consumers during a power failure.