MultiPlus-II 12/3000/120-50 120V (UL 458)

The Victron Energy MultiPlus-II 12/3000/120-50 120V (UL 458) combines a powerful pure sine-wave inverter, a 120A adaptive battery charger, and a high-speed 50A automatic transfer switch in a single unit. It is designed for 12V battery systems in recreational vehicles, boats, mobile applications, and off-grid or backup power installations using 120V AC.

When shore power or generator power is available, the MultiPlus-II passes AC power to the connected equipment while charging the battery bank. If the external AC source is disconnected or fails, it automatically switches to inverter operation in less than 20 milliseconds to keep essential equipment powered.

Key Features:

• 3000VA Pure Sine-Wave Inverter: Produces clean 120V AC power for appliances, electronics, tools, and other compatible equipment.
• Powerful 120A Battery Charger: Provides adaptive multi-stage charging for large 12V battery banks.
• 50A Automatic Transfer Switch: Transfers connected equipment between shore or generator power and inverter power automatically.
• Fast UPS Operation: Switches to battery-powered inverter operation in less than 20 milliseconds when the external AC source is interrupted.
• PowerControl: Limits battery-charging demand to help prevent overloading a generator or limited shore-power connection.
• PowerAssist: Supplements a limited AC source with battery power when the connected loads temporarily require more power than the source can provide.
• Two AC Outputs: The primary output powers connected loads during AC pass-through and inverter operation. The auxiliary output operates only while an external AC source is available, making it useful for loads that should not discharge the battery.
• Adaptive Battery Charging: Uses bulk, absorption, float, and storage stages to charge batteries efficiently and help extend battery life.
• VE.Bus Communication: Supports system configuration, remote monitoring, and integration with compatible Victron GX devices.
• Expandable System Design: Compatible units can be configured for parallel, split-phase, or three-phase operation when additional power or a different system configuration is required.
• Programmable Relay: Can be configured for alarms, low-battery warnings, or generator start and stop control.
• UL 458 Listed: Designed and listed for applicable mobile and marine inverter and charger installations.
• Built-In Protection: Includes protection against output short circuits, overload, high or low battery voltage, excessive temperature, AC voltage on the inverter output, and excessive DC input ripple.

The MultiPlus-II 12/3000/120-50 is a dependable all-in-one power solution for RVs, boats, work vehicles, cabins, and backup systems that require reliable 120V AC power, high-capacity battery charging, and automatic transfer between external AC and battery power.

Technical Specifications: