MultiPlus-II 24/3000/70-50 2X120 volt Final Sale

Victron Energy MultiPlus-II 24/3000/70-50 2x120V inverter/charger with 3000VA true sine wave output, 70A battery charging, 50A transfer switch, PowerControl, PowerAssist, and VE.Bus system integration for 24V split-phase, marine, vehicle, off-grid, and backup power systems.

The Victron MultiPlus-II PMP242305130 is a 24V 2x120V inverter/charger that combines the functions of a true sine wave inverter, adaptive battery charger, and automatic transfer switch in one integrated unit. It is designed for systems that may use split-phase 120/240V input and output or single-phase 120V input and output, while providing 120V output when operating in inverter mode.

When an AC source is available, the MultiPlus-II feeds AC through to its output and mirrors the AC input. When shore, generator, or grid power is disconnected, the unit switches to inverter operation and connects both output lines together to provide 120VAC to loads on either line. This prevents 240V loads, such as water heaters or 240V air conditioners, from discharging the battery when no split-phase AC source is available.

PowerControl and PowerAssist help manage limited generator, shore, or grid power. PowerControl helps prevent overload by accounting for other AC loads, while PowerAssist supplements the AC source with battery power during temporary peak demand. The page 1 wiring diagrams show inverter mode, 120VAC input, and split-phase input power flow for different installation scenarios.

Key Features

• 24V DC MultiPlus-II 2x120V inverter/charger
• True sine wave inverter output
• 3000VA / 2400W continuous output at 25°C
• 5500W peak power
• 70A maximum battery charge current
• 50A transfer switch
• Maximum AC input current of 50A per leg
• PowerControl and PowerAssist on L1 input
• Supports split-phase 120/240V AC input and output
• Supports single-phase 120V AC input and output
• Provides 120V output when operating in inverter mode
• Main AC output has no-break functionality
• L1 transfer time is less than 18 milliseconds
• L2 transfer time is approximately 40 milliseconds
• Auxiliary output is live only when AC input is available
• Supports off-grid and grid-connected PV and alternative energy systems
• Compatible with solar charger controllers and grid-tie inverters
• Supports parallel and three-phase operation
• VE.Bus communication port for remote monitoring and system integration
• Optional 100A external AC current sensor support
• Programmable relay
• Two general-purpose communication ports
• Remote on/off capability
• Fan-assisted cooling
• Compatible with Victron GX devices, VRM Portal, VRM app, VE.Bus Smart Dongle, MK3-USB interface, Digital Multi Control Panel, and VictronConnect app

Technical Specifications

• Manufacturer: Victron Energy
• Model: MultiPlus-II 2x120V 24/3000/70-50
• Part Number: PMP242305130
• DC System Voltage: 24V
• DC Input Voltage Range: 19V to 33V
• Output in Inverter Mode: 120VAC ± 2%
• Output Frequency: 60Hz ± 0.1%
• Continuous Output Power at 25°C: 3000VA / 2400W
• Continuous Output Power at 40°C: 2200W
• Continuous Output Power at 65°C: 1700W
• Maximum Apparent Feed-In Power: 2500VA
• Peak Power: 5500W
• Maximum Efficiency: 94%
• Zero Load Power: 11W
• Zero Load Power in AES Mode: 8W
• Zero Load Power in Search Mode: 4W
• Transfer Switch Rating: 50A
• Maximum AC Input Current: 50A each leg
• AC Input, Split Phase: 180V to 280VAC, 45Hz to 65Hz
• AC Input, Single Phase: 90V to 140VAC, 45Hz to 65Hz
• Absorption Charge Voltage: 28.8V
• Float Charge Voltage: 27.6V
• Storage Mode Voltage: 26.4V
• Maximum Battery Charge Current: 70A
• Battery Temperature Sensor: Yes
• Auxiliary Output: 50A each leg
• External AC Current Sensor: Optional, 100A
• Programmable Relay: Yes
• VE.Bus Communication Port: Yes
• General Purpose Communication Ports: 2
• Remote On/Off: Yes
• Operating Temperature Range: -40°C to +65°C / -40°F to 150°F
• Humidity: Maximum 95%, non-condensing
• Enclosure Material and Color: Steel, blue RAL 5012
• Protection Category: IP22
• Battery Connection: 2 M8 bolts
• AC Connection: Screw terminals, 21 mm² / 4 AWG
• Dimensions: 578 x 275 x 148 mm / 23 x 11 x 6 in
• Weight: 22 kg / 48 lb
• Safety Standards: EN-IEC 60335-1, EN-IEC 60335-2-29, UL 458
• Emission and Immunity Standards: EN 55014-1, EN 55014-2, EN-IEC 61000-3-2, EN-IEC 61000-3-3, IEC 61000-6-1, IEC 61000-6-2, IEC 61000-6-3

Applications

• Marine and yachting power systems
• Vehicle power systems
• Land-based off-grid systems
• Backup power systems
• Shore power systems
• Generator-assisted systems
• Grid-connected PV systems
• Alternative energy systems
• 120/240V split-phase installations with 120V inverter backup loads

Ideal For

• 24V battery systems requiring 120V inverter output
• Professional marine, vehicle, and off-grid installations
• Systems using shore, generator, or grid input
• Installations that need inverter, charger, and transfer switch functions in one unit
• Applications requiring backup power for 120V loads
• Systems with limited AC input capacity
• Victron-based systems requiring VE.Bus integration and remote monitoring

Protection Features

• Output short-circuit protection
• Overload protection
• Battery voltage too high protection
• Battery voltage too low protection
• Temperature too high protection
• Protection against 120VAC on inverter output
• Input voltage ripple too high protection

System Compatibility

• Compatible with 24V battery systems
• Compatible with split-phase 120/240V AC input and output
• Compatible with single-phase 120V AC input and output
• Compatible with solar charger controllers
• Compatible with grid-tie inverters
• Supports VE.Bus communication
• Supports parallel operation with up to 6 compatible Multi units
• Supports three-phase output with three units of the same model
• In multi-phase setups, L2 is disabled on all units
• Compatible with Cerbo GX, Ekrano GX, and other compatible GX devices for VRM remote monitoring
• Compatible with VE.Bus Smart Dongle for Bluetooth monitoring and control
• Configurable with VEConfigure software using an MK3-USB interface
• Supports optional 100A external current sensor for PowerControl, PowerAssist, and self-consumption optimization

Check Before Ordering

• Confirm your battery bank is 24V DC.
• Confirm whether your installation uses split-phase 120/240V AC input or single-phase 120V AC input.
• In inverter mode, this unit provides 120V output; 240V loads are supplied only when a split-phase AC source is available.
• Verify that 2400W continuous output and 5500W peak power are suitable for your connected loads.
• Confirm your battery bank can safely accept up to 70A charging current.
• Check that the 50A transfer switch and 50A-per-leg AC input ratings match your system design.
• Verify installation requirements for AC wiring, DC wiring, overcurrent protection, grounding, ventilation, and mounting space.
• For PowerAssist, note that the function is available on L1 input only.
• For parallel or three-phase systems, confirm all units are compatible and properly configured.
• Confirm whether accessories such as a GX device, VE.Bus Smart Dongle, MK3-USB interface, Digital Multi Control Panel, or external current sensor are needed for monitoring, control, or configuration.