Victron Energy MultiPlus-II 24/3000/70-50 120V VE.Bus Inverter/Charger – PMP242305102

Product Overview

The Victron Energy MultiPlus-II 24/3000/70-50 120V VE.Bus is a powerful, multifunctional inverter/charger designed for marine, mobile, off-grid and backup power installations using a 24V battery system. Combining a pure sine wave inverter, an intelligent battery charger and an integrated automatic transfer switch, it provides dependable AC power and efficient battery management in one compact unit.

With a 3,000VA inverter rating, a 70A battery charger and a 50A transfer switch, the MultiPlus-II is designed to manage changing power demands while making effective use of available AC supplies and stored battery energy. Its integrated design helps simplify electrical installations by combining essential power conversion and charging functions in a single device.

Applications and Usage

The MultiPlus-II 24/3000 is suitable for compatible boats, yachts, recreational vehicles, motorhomes, commercial vehicles and off-grid installations that require 120V AC power from a 24V battery bank.

When external AC power is unavailable, the inverter converts battery energy into AC electricity for compatible appliances, lighting, electronics and other equipment within its rated capacity. When connected to a suitable shore power or generator supply, the unit can pass external AC power through to connected loads while charging the battery bank.

If the incoming AC supply fails, the integrated transfer switch automatically changes to inverter operation, helping maintain the supply to connected equipment with minimal interruption.

Pure Sine Wave Inverter Performance

The integrated inverter produces a pure sine wave output at 120V AC and 60Hz. This provides a stable AC supply suitable for many electronic devices, appliances and other equipment when their electrical requirements are within the unit's capacity.

The inverter has a continuous apparent power rating of 3,000VA, delivering approximately 2,400W of active power at 25°C under specified conditions. Continuous active power is approximately 2,200W at 40°C and 1,700W at 65°C. Its peak power capability reaches up to 5,500W for short-duration demands.

Actual performance depends on operating temperature, battery voltage, cable sizing and the starting characteristics of connected equipment.

Intelligent 70A Battery Charger

The integrated 70A battery charger provides controlled charging for a compatible 24V battery bank. Victron Energy's charging technology manages the charging process to help replenish the battery efficiently while supporting appropriate battery care.

Charging settings must be configured to match the requirements of the installed battery. For lithium batteries, confirm compatibility with the battery manufacturer's charging specifications and any required battery management system.

The maximum charging current available in practice may depend on the AC supply, configured settings, temperature and overall installation conditions.

PowerControl and PowerAssist

PowerControl helps prevent a limited shore power connection or generator from being overloaded by allowing the maximum AC input current to be configured.

PowerAssist provides additional flexibility by supplementing a restricted external AC supply with energy from the battery through the inverter when demand temporarily exceeds the available input capacity. This helps support higher short-term loads without relying entirely on the external supply.

These functions are particularly useful in marine and mobile installations where the available shore connection or generator capacity may be limited. Correct configuration is essential to keep the installation within its electrical limits.

Automatic Transfer Switching and System Continuity

The integrated 50A transfer switch automatically changes between external AC power and inverter operation when the incoming supply becomes unavailable. This helps maintain power to compatible connected loads with minimal interruption.

This capability is valuable in installations where a reliable AC supply is important, including mobile workspaces, marine electrical systems and backup power arrangements.

The transfer switch rating must not be confused with the inverter's continuous power rating. Connected loads, input supplies and protective devices must all be selected to suit the installation.

Technical Information

The PMP242305102 is designed for a nominal 24V DC battery system, with an operating DC input voltage range of approximately 19–33V. It provides 120V AC output at 60Hz, with a continuous inverter rating of 3,000VA and approximately 2,400W of active power at 25°C.

The unit provides up to 5,500W of peak power and has a maximum inverter efficiency of approximately 94%. Its integrated battery charger delivers a maximum charging current of 70A, while the automatic AC transfer switch is rated at 50A.

The unit supports VE.Bus communication for configuration, remote monitoring and integration with compatible Victron Energy equipment. Its enclosure measures approximately 536 × 277 × 147mm and weighs around 19kg.

VE.Bus Integration and Installation

The MultiPlus-II can be integrated with compatible Victron Energy monitoring and control equipment. Depending on the wider system configuration, compatible accessories can provide remote monitoring, operating-status information and access to configurable settings.

Installation requires suitable battery cables, correctly rated DC overcurrent protection, appropriate AC circuit protection, secure mounting and adequate ventilation. Cable sizes and protective devices must be selected according to the expected current, cable length, installation conditions and applicable electrical regulations.

This model is designed for 120V AC, 60Hz systems and is not a direct replacement for a 230V UK or European inverter/charger. Confirm the AC voltage, frequency, battery voltage, charging requirements and connected-load capacity before purchasing.

Professional installation is recommended for marine, vehicle and fixed electrical systems.

Product Summary

The Victron Energy MultiPlus-II 24/3000/70-50 120V VE.Bus inverter/charger is an integrated power solution for compatible 24V installations. Its 3,000VA pure sine wave inverter, 70A battery charger, 50A automatic transfer switch, PowerControl and PowerAssist features make it suitable for marine, mobile, off-grid and backup power applications requiring reliable 120V AC electricity.