Victron Energy
Victron Quattro-II 24/3000/70-50/50 2x120V Inverter/Charger — 24V Dual AC Input, Split-Phase
Victron Quattro-II 24/3000/70-50/50 2x120V Inverter/Charger — 24V Dual AC Input, Split-Phase
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The Victron Quattro-II 24/3000/70-50/50 2x120V is the 24V version of the dual-AC-input Quattro-II — 3000VA pure sine output (2400W continuous), 70A multi-stage charger, split-phase 2x120V output, and TWO independent AC inputs (shore + generator) that the system intelligently switches between. The right pick for 24V boats, off-grid systems with backup generators, and marine installs needing both shore and generator capability without an external transfer switch.
The dual AC input advantage
- Two AC inputs — shore power on one input, generator on the other; auto-selects based on availability
- No external transfer switch needed — the Quattro handles selection internally
- Programmable priority — prefer shore when available, fall back to generator
- Seamless transitions — generator auto-starts (with appropriate auto-start hardware), Quattro detects, switches in milliseconds
- 24V house bank advantage — thinner cable, less voltage drop than 12V at the same power
What 3000VA powers
- Marine air conditioning (mid-size unit with PowerAssist)
- Galley appliances simultaneously
- Mid-size refrigerator + entertainment + lighting
- 240V household equipment (well pump, water heater on intermittent)
- Whole-cabin "normal living" load
- Off-grid cabin essentials including pump and refrigeration
Why the Quattro-II 24/3000 instead of MultiPlus-II 24/3000?
If you only have one AC source (shore OR generator), use the MultiPlus-II 24/3000 — cheaper and simpler. If you have BOTH (boat with onboard generator, off-grid home with backup generator), the Quattro-II handles automatic source selection so you don't need an external transfer switch.
Specifications
| Nominal DC input voltage | 24V (operating range 19–33V) |
|---|---|
| Continuous AC output | 2400W (3000VA) |
| Peak AC output | 6000W (short duration) |
| AC output waveform | Pure sine wave |
| AC output voltage | 2x 120V (split-phase 120V/240V) |
| Charger output current | 70A |
| AC transfer switch (input 1) | 50A |
| AC transfer switch (input 2) | 50A |
| PowerControl / PowerAssist | Yes (on both inputs) |
| ESS (grid-tie) capable | Yes |
| Networking | VE.Bus (parallel and 3-phase capable) |
| Battery chemistry | AGM, Gel, Flooded, LiFePO4 (configurable) |
| Cooling | Variable-speed temperature-controlled fan |
| Operating temperature | -40°C to +65°C (full power up to 40°C) |
| Manufacturer SKU | QUA242305130 |
| Warranty | 5 years (manufacturer) |
Recommended applications
- Yacht / motor yacht with 24V house bank — shore at dock + onboard generator underway
- Larger sailboat with 24V system — shore + diesel generator + battery
- Off-grid home with 24V battery bank — grid + backup generator + battery seamless
- Commercial mobile platform — 24V chassis with both shore + onboard generator
- Critical backup with 24V bank — utility + standby generator + battery
Every Jonsson Tech order ships within 5 days nationwide from our Houston, Texas warehouse. Free pre-purchase system design consultation — we'll help you configure source priorities and integrate with generator auto-start hardware.
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