Victron MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved
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Victron MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved Product Description
Victron MultiPlus-II 12/3000 - 120-50 - 120V UL Listed Inverter/Charger
The Victron MultiPlus-II 12/3000 - 120-50 - 120V represents the pinnacle of marine power management technology, combining a high-performance 3000W pure sine wave inverter with a sophisticated 120A battery charger and 50A transfer switch in one UL Listed unit. This advanced inverter/charger system delivers uninterrupted power for your vessel's critical electronics while providing intelligent battery charging and shore power integration.
Why Marine Professionals Choose the MultiPlus-II
- UL Listed Certification: Meets rigorous North American safety standards for marine electrical systems
- 20ms Transfer Time: Seamless power switching protects sensitive navigation and communication equipment
- PowerAssist Technology: Prevents generator overload while boosting available power from batteries
- ESS Integration: Key component for complete energy storage systems with solar integration
- Remote Monitoring: Full system control via VRM app and GX device connectivity
Technical Specifications
Power Output
- Continuous Power: 3000W
- Peak Power: 6000W (5 seconds)
- AC Output Voltage: 120V ±2%
- Frequency: 60Hz ±0.1%
- Waveform: Pure sine wave
- THD: <3%
Battery Charger
- Charge Current: 120A maximum
- Battery Voltage: 12VDC nominal
- Charge Algorithm: 4-stage adaptive
- Battery Types: Lead-acid, AGM, Gel, LiFePO4
- Temperature Compensation: Available
- Minimum Battery Bank: 400Ah recommended
AC Input
- Input Voltage Range: 90-140VAC
- Input Current Limit: 50A adjustable
- Frequency Range: 50/60Hz auto-detect
- PowerFactor: >0.98
- Transfer Switch Rating: 50A
Advanced Marine Power Management Features
PowerAssist Technology
The MultiPlus-II intelligently manages limited AC power sources like shore power or generator connections. When demand exceeds available shore power, the system automatically supplements with battery power, preventing circuit breakers from tripping while maximizing available power for your vessel's needs.
Uninterrupted Power Supply (UPS)
Critical for marine electronics, the sub-20 millisecond transfer time ensures navigation systems, chartplotters, VHF radios, and other essential equipment continue operating during shore power disconnections or generator startup sequences.
Energy Storage System (ESS) Ready
Integrates seamlessly with Victron MPPT solar charge controllers and GX monitoring devices to create comprehensive energy management systems. Perfect for vessels with solar arrays seeking to maximize self-sufficiency and minimize generator runtime.
External Current Sensing
Optional external current transformer (max 32A) enables advanced PowerControl and PowerAssist functions with precise load monitoring for optimal power distribution throughout your vessel's electrical system.
Marine Installation Requirements
- Mounting: Vertical installation in dry, well-ventilated location
- Clearances: Minimum 6" on all sides for proper cooling
- DC Wiring: Use marine-grade tinned copper conductors sized per ABYC E-11 standards
- AC Connections: NEMA-compliant connections with proper GFCI protection
- Grounding: Connect to vessel's DC negative and AC safety ground systems
- Battery Protection: Install appropriate DC breaker or fuse (400A recommended)
- Ventilation: Ensure adequate air circulation in engine room or electrical compartment
System Compatibility & Integration
Battery Technologies
- Flooded Lead-Acid
- AGM (Absorbed Glass Mat)
- Gel Cell
- LiFePO4 (Lithium Iron Phosphate)
- Custom programmable profiles
Monitoring & Control
- Victron GX devices (Cerbo GX, Venus GX)
- VRM portal and mobile app
- MK3-USB interface for configuration
- VE.Configure software
- Digital Multi Control panel
Safety Certifications & Compliance
- UL Listed: Meets UL safety standards for North American marine installations
- ABYC Compliant: Adheres to American Boat and Yacht Council electrical standards
- FCC Class A: Electromagnetic compatibility certification
- Anti-Islanding Protection: Built-in grid-tie safety features
- Over-Temperature Protection: Automatic power reduction and shutdown
- Short Circuit Protection: Internal protective circuits
Ideal Marine Applications
- Power Yachts: Main inverter/charger for 30-40ft vessels with moderate electrical loads
- Sailing Yachts: Integration with solar charging systems for extended cruising
- Sport Fishing Boats: Reliable power for fish finders, GPS, and communication equipment
- Trawlers: Long-range cruising power management with generator coordination
- Commercial Vessels: UL Listed certification for commercial marine applications
- Marina Installations: Shore power management for dock-side electrical systems
Warranty & Technical Support
The Victron MultiPlus-II is backed by Victron Energy's comprehensive 5-year warranty and worldwide network of authorized service centers. Technical support is available through certified marine dealers with access to VE.Configure software and diagnostic tools.
Important: All returns, repairs, and support issues must be handled through your authorized Victron dealer to maintain warranty coverage and ensure proper marine electrical system integration.
Frequently Asked Questions
Q: What size battery bank is required for the MultiPlus-II 12/3000?
A: Victron recommends a minimum 400Ah battery bank at 12V for optimal performance. Larger battery banks provide longer runtime and reduce stress on the batteries during high-load situations.
Q: Can this unit be paralleled for higher power output?
A: Yes, up to 6 units can be connected in parallel using VE.Bus cables for increased power capacity, or configured in 3-phase arrangements for specialized applications.
Q: Is this suitable for lithium battery systems?
A: Absolutely. The MultiPlus-II includes pre-programmed charging profiles for LiFePO4 batteries and can be custom-configured for specific lithium battery management system requirements.
Q: What's the difference between this and the 2x120V version?
A: This single 120V version provides one 120V output suitable for 30A shore power connections. The 2x120V version provides split-phase 120/240V output for 50A shore power applications.
Q: Does this require special marine wiring?
A: Yes, use marine-grade tinned copper conductors sized according to ABYC E-11 standards. DC connections require proper marine battery switches and overcurrent protection.
Q: Can I monitor this remotely while away from the boat?
A: Yes, when connected to a Victron GX device with internet connectivity, you can monitor and control the system remotely via the free VRM portal and mobile app.
MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved
The MultiPlus-II, an inverter/charger, combines the functions of the MultiPlus and the MultiGrid. It has all the features of the MultiPlus, plus an external current transformer option to implement PowerControl and PowerAssist and to optimize self-consumption with external current sensing (max. 32A). It also has all the features of the MultiGrid with built-in anti-islanding and an increasingly long list of country approvals.
PowerAssist
The MultiPlus-II will prevent the overload of a limited AC source, such as a generator or shore power connection. First, battery charging will automatically be reduced when otherwise an overload would occur. The second level will boost the output of a generator or shoreside supply with power taken from the battery.
ESS: Energy Storage Systems
The MultiPlus-II is the key component in a Victron ESS system, providing the flexibility to combine with MPPT Solar Chargers or Grid-tie PV Inverters.
Uninterrupted AC power (UPS function)
In the event of a grid failure, or when shore or generator power is disconnected, the inverter within the Multi is automatically activated and takes over the supply to the connected loads. This happens so fast (less than 20 milliseconds) that computers and other electronic equipment will continue to operate without disruption.
Remote Monitoring and Control
When coupled with a GX device (e.g. Cerbo GX) you can monitor and control your Multi and system or systems' locally (LAN) or remotely via the internet from anywhere in the world, using the free VRM app and free VRM portal website. Access can be from a phone, tablet, laptop or PC for multiple operating systems. There is no end to the level of control, from adjusting your Multi to auto starting a backup generator and more.
*Note: for a short period of time this product was called MultiGrid-II.
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Frequently Asked Questions (FAQ) About Victron MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved
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Victron MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved Videos
Victron MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Victron Energy |
| Weight: |
52.22 lb |
| User Guide: | |
| Product Installation: |
Victron MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved User Reviews
Victron MultiPlus-II 12/3000 - 120-50 - 120V - UL Approved Shipping & Return
| Shipping Weight: |
52.22 lb |
|---|---|
| Box Sizes: |
10.00 (h) x 14.00 (w) x 24.00 (l) |
| Cubic Feet: |
3360.0 |
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