Victron Energy Multiplus 3000 Watt Solar Power Inverters

Victron MultiPlus 3000: What the 2x120V Split-Phase Inverter Charger Does

The Victron MultiPlus 3000 in this collection is the MultiPlus-II 2x120V, a 3,000W pure sine wave inverter charger built for the 50A 120/240V split-phase service that North American RVs, fifth wheels and larger boats use. It runs on a 12V battery bank, so it drops into the house system most coaches already have, and it handles shore power, generator input and inverter output as one unit instead of three separate boxes and a transfer switch.

This is a single-product collection. The Victron 3000VA MultiPlus-II 2X Inverter Charger 120/240V Split Phase, 12-Volt lists at $1,039 and weighs 48lb. It is sold out at the moment, so use this page to decide whether it is the right unit and what to put around it, then call us for the expected restock date.

How to decide if the MultiPlus 3000 fits your rig

• Your service type. If the coach has a 50A 120/240V inlet with two hot legs, the 2x120V version is the one that keeps both legs powered when you are off shore power. A 30A single-leg RV does not need the split-phase feature.
• Battery voltage. The unit is 12V. If you have or plan a 24V or 48V bank, look at the 48V EasySolar-II in the Victron inverters collection instead.
• Load size. 3,000W of continuous output runs a microwave, coffee maker or a rooftop air conditioner one at a time from the battery. Add up what you actually run at once; if the total is regularly above 3,000W, plan a second unit in parallel.
• Solar. The MultiPlus-II does not list solar input. Pair it with a separate MPPT charge controller sized to your roof array, and let the MultiPlus handle AC charging and inverting.
• Mounting. At 48lb the unit needs a solid bulkhead or floor mount in a ventilated bay, close to the battery to keep 12V cable runs short.

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Setup and usage tips

• Use the Solar Kit Calculator with your appliance list and ZIP code to size the battery bank and solar array around the inverter. The inverter is the easy part; the 12V bank behind it decides how long you can run.
• Set the AC input current limit to match the pedestal. On a 30A adapter at a campground, a lower limit stops the charger plus loads from tripping the breaker.
• Configure the charger for your battery chemistry before the first charge, especially with LiFePO4.
• Keep 12V cabling short and sized for 3,000W of draw. Undersized cable is the most common cause of low-voltage shutdowns on 12V inverters.
• If you want to see state of charge and shore status from your phone, budget for a Victron GX monitoring device; it is not included with this unit.

Frequently asked questions

Is the Victron Energy MultiPlus 3000 the same as a MultiPlus-II? The product here is the MultiPlus-II 2x120V, the current split-phase version. When people search for a multiplus 3000 they usually mean this class of unit; this listing is the 12V 120/240V model.

Can the Victron MultiPlus 3000W inverter run while plugged into shore power? Yes. It is listed as managing shore power, generator input and inverter operation as one system, so it charges the batteries from shore and takes over the loads when you unplug. That is the point of an inverter charger over a plain inverter.

Does it work with a generator? Yes. The unit manages generator input the same way it manages shore power, so you can charge from a portable generator at a dry-camp site.

When it returns to stock the MultiPlus-II ships free to the mainland US from our brand partner warehouses, usually within a few business days, with 30-day returns. Call us to check availability or to plan the battery and solar side now.