Victron Energy MultiPlus-II 48/4500VA 55-32 GX Inverter/Charger 230V

The Victron Energy MultiPlus-II 48/4500VA 55-32 GX is a high-performance, multifunctional power inverter and battery charger designed for demanding 48V energy systems. This unit combines a powerful 230V inverter with a sophisticated battery charger and an integrated GX device, which serves as the central communication hub for your power installation. By consolidating these functions into a single, compact housing, it simplifies system architecture while providing reliable, continuous AC power for residential, marine, and mobile applications.

Advantages

The primary benefit of this unit is its seamless integration of power conversion and system management. With the built-in GX device, users gain advanced monitoring and control capabilities, allowing for remote access via the Victron Remote Management portal. The device features rapid transfer switching, ensuring that critical loads remain powered during grid failures. Its intelligent energy management system optimizes battery usage and solar integration, significantly increasing the efficiency of off-grid or hybrid power setups.

Suitable for

• Off-grid solar energy storage systems
• Marine power installations for yachts and boats
• Mobile power solutions for recreational vehicles
• Residential backup power systems
• Industrial energy management setups

When it may not be suitable

This device is specifically engineered for 48V battery systems and is not compatible with 12V or 24V battery banks. It may also be oversized for small, low-power applications where a smaller inverter would suffice, or unsuitable for environments requiring specialized ingress protection ratings not provided by this standard unit.

Key specifications

• Nominal voltage: 48V DC
• Output voltage: 230V AC
• Apparent power: 4500VA
• Integrated GX communication interface
• Transfer switch capacity: 32A
• Battery charger current: 55A

How to use

Installation should be performed by a qualified technician in accordance with local electrical regulations. The unit must be connected to a compatible 48V battery bank using appropriately sized cables to handle the current. Once connected, the integrated GX interface can be configured via a local network or the Victron portal to monitor battery status, solar input, and grid interaction. Ensure the unit is mounted in a well-ventilated area to maintain optimal operating temperatures.

What to consider before purchase

• Compatibility with your existing 48V battery chemistry
• Available physical space for mounting the unit
• Total power requirements of your connected AC loads
• Need for remote monitoring and internet connectivity

Usage recommendations

Regularly check the system status through the GX interface to ensure battery health and optimal energy distribution. Keep the ventilation slots clear of dust and debris to prevent overheating during high-load operations.