Victron Energy MultiPlus 12/1200 - 50-16 - 120V VE Bus Inverter and Charger

MultiPlus 12/1200 - 50-16 - 120V - VE. Bus

The MultiPlus is a powerful true sine wave inverter, a sophisticated battery charger that features adaptive charge technology, and a high-speed AC transfer switch in a single compact enclosure. Next to these primary functions, the MultiPlus has several advanced features, as outlined below.

Parallel Operation and Three-Phase Capability

Up to six Multis can operate in parallel to achieve higher power output. In addition to parallel connection, three units can be configured for three-phase output.

PowerControl - Dealing with Limited Generator, Shore Side or Grid Power

With the Multi Control Panel, a maximum generator or shore current can be set. The MultiPlus will then take account of other AC loads and use whatever is extra for charging, thus preventing the generator or shore supply from being overloaded.

PowerAssist - Boosting the Capacity of Shore or Generator Power

This feature takes the principle of PowerControl to a further dimension. It allows MultiPlus to supplement the capacity of the alternative source. Where peak power is often required only for a limited period, the MultiPlus will make sure that insufficient shore or generator power is immediately compensated for by power from the battery. When the load is reduced, the spare power is used to recharge the battery.

Four Stage Adaptive Charger and Dual-Bank Battery Charging

The main output provides a powerful charge to the battery system using advanced adaptive charge software. The software fine-tunes the three-stage automatic process to suit the condition of the battery and adds a fourth stage for long periods of float charging. The adaptive charge process is described in more detail on the Charger datasheet and Victrons website under Technical Information. In addition to this, the MultiPlus will charge a second battery using an independent trickle charge output intended for a main engine or generator starter battery.

High Start-Up Power

It is needed to start high-inrush loads such as power converters for LED lamps, halogen lamps, or electric tools.

Search Mode

When Search Mode is on, the power consumption of the inverter in no-load operation is decreased by approx. 70%. In this mode, the Multi, when operating in inverter mode, is switched off in case of no load or very low load and switches on every two seconds for a short period. If the output current exceeds a set level, the inverter will continue to operate. If not, the inverter will shut down again.

Programmable Relay

By default, the programmable relay is set as an alarm relay, i.e. the relay will de-energize in the event of an alarm or a pre-alarm (inverter almost too hot, ripple on the input almost too high, battery voltage almost too low).

Remote On/Off/Charger On

Three pole connector.

On-Site System Configuring, Monitoring, and Control

After installation, the MultiPlus is ready to go. Some settings can be changed with DIP switches. 500/800/1200VA models: remote switch/battery charge voltage/inverter frequency/search mode. 1600/2000VA models: battery charge voltage/search mode. For more settings use VE-Config or the VE. Bus Smart dongle.

Remote Configuring and Monitoring

Install a Cerbo GX or other GX product to connect to the internet. Operational data can be stored and displayed on Victrons VRM (Victron Remote Management) website, free of charge. When connected to the internet, systems can be accessed remotely, and settings can be changed.

Specifications:

• PowerControl: Yes


• PowerAssist: Yes


• Transfer Switch (A): 16

Inverter Specifications:

• Input Voltage Range (V DC): 9,5 17 V


• Output voltage: 120 VAC, 2%


• Continuous Output Power at 25C (VA): 1200


• Continuous Output Power at 25C (W): 1000


• Continuous Output Power at 40C (W): 900


• Continuous Output Power at 65C (W): 600


• Peak Power (W): 2400


• Maximum Efficiency (%): 93


• Zero Load Power (W): 13


• Zero Load Power in Search Mode (W): 4

Charger Specifications:

• AC Input voltage range 95 - 140 V


• AC Input Frequency range: 55-66Hz


• Charge Voltage Absorption (V DC): 14,4


• Charge Voltage Float (V DC): 13,8


• Storage Mode (V DC): 13,2


• Charge Current House Battery (A): 50


• Charge Current Starter Battery (A): 1


• Battery Temperature Sensor: Yes

General Specifications:

• Programmable Relay: Yes (1x)


• Protection: a - g


• VE.Bus Communication Port: For parallel and three-phase operation, remote monitoring and system integration (RJ45-splitter ASS030065510 needed for 500 / 800 / 1200 VA models)


• Remote On-Off: On/off/charger only


• DIP Switches: Yes


• Internal DC Fuse: 200A


• Operating Temperature Range: -40 - +65C / -40 to 150F (fan-assisted cooling), Humidity (non-condensing) max 95%

Enclosure Specifications:

• Common Characteristics: Material Color: aluminum (blue RAL 5012) / Protection category: IP 21


• Battery-Connection: 35 mm


• AC-Connection: G-ST18i connector


• Weight: 8.2 kg (18.1 lbs)


• Dimensions (H x W x D): 406 x 250 x 100 mm / 15.98 x 9.84 x 3.94 in.

Standards:

• Safety: EN-IEC 60335-1, EN-IEC 60335-2-29, EN 62109-1


• Emission, Immunity: 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


• Automotive Directive: ECE R10-5


• Protection: Output short circuit, Overload, Battery voltage too high, Battery voltage too low, Temperature too high, 230VAC on inverter output, Input voltage ripple too high


• Non-linear load, crest factor 3:1


• Up to 25C ambient


• Programmable relay which can be set for: general alarm, DC under voltage or generator start/stop signal function. AC rating: 4 A at 120 V DC rating: 4 A up to 35 V, 1 A up to 60 V


• For parallel and three-phase operation an RJ45-splitter ASS030065510 is needed.


• Select remote behaviour, battery charge voltages and/or search mode

The Victron Energy MultiPlus 12/1200 - 50-16 - 120V VE Bus is a versatile and powerful inverter and battery charger designed for optimal energy management in off-grid or backup power systems. It features a true sine wave inverter capable of delivering continuous power of up to 1000 watts, with a peak power of 2400 watts, ensuring reliable operation of high-inrush loads such as power tools, LED converters, and more. The integrated adaptive charger utilizes advanced software to automatically adjust charging parameters based on battery conditions, incorporating a four-stage process with float mode for long-term maintenance. Additionally, the MultiPlus includes a second independent trickle charge output dedicated to starter batteries, providing comprehensive battery management.

This unit supports parallel operation and three-phase configurations, allowing up to six units to work together for increased power capacity. Its PowerControl and PowerAssist features intelligently manage limited generator or grid power by preventing overloads and supplementing power during peak demands, then recharging batteries when the load decreases. The high start-up power capability ensures reliable operation of devices with high initial current requirements. The Search Mode significantly reduces power consumption during no-load conditions, extending system efficiency. The programmable relay offers customizable alarm and control functions, while remote on/off controls and configurable settings through DIP switches or Victron's VE-Config system streamline installation and operation.

Constructed with durable aluminum and rated IP21 for protection, the MultiPlus is suitable for a wide range of environments. It includes a G-ST18i connector for AC input, an internal 200A fuse for safety, and communicates via VE.Bus for system monitoring and integration, especially when connected to a Cerbo GX or similar device. Weighing approximately 18 pounds and measuring roughly 16 inches high, 10 inches wide, and 4 inches deep, this unit offers robust performance in a compact form factor. Certified to meet multiple safety and emission standards, the MultiPlus is an ideal solution for off-grid, backup, or mobile power applications requiring reliable, efficient energy management and flexible system expansion options.

Features:

• True sine wave inverter delivering continuous power of 1000W with 2400W peak power

• Adaptive four-stage battery charger with float maintenance for long-term battery health

• Supports parallel and three-phase operation for scalable power solutions

• PowerControl and PowerAssist features optimize limited AC power sources

• High inrush current capability suitable for starting high-demand loads

• Search Mode reduces no-load power consumption by approximately 70%

• Programmable relay for alarms and control functions

• Remote On/Off and system configuration via DIP switches or VE-Config software

• Built-in VE.Bus communication port for remote monitoring and system integration

• Durable aluminum enclosure with IP21 protection standard

• Includes internal 200A fuse and G-ST18i AC connection

• Compatible with Cerbo GX for internet-based remote monitoring