24V Off-Grid Hybrid Solar Inverter · RS-H3024
NOVA MAX 3K — 3000W 24V Off-Grid Hybrid Solar Inverter with 80A MPPT Charging
A 3,000W pure sine wave inverter, an 80A MPPT solar charge controller, and a full battery charger — combined into one compact unit built for RVs, cabins, boats, and off-grid solar systems that need dependable power without a rack full of separate components.
All-In-One Hybrid Power, Built for Off-Grid Use
The NOVA MAX 3K rolls an inverter, an MPPT solar charge controller, and a multi-stage battery charger into a single 24V unit, so a solar-plus-battery system can be wired up without a separate charge controller taking up space. It accepts solar, battery, utility, and generator input, and manages the mix between them automatically based on whichever charging and load priority mode fits the system.
What Sets It Apart
All-in-One Hybrid Power
- 3,000W pure sine wave inverter delivers reliable power for RVs, cabins, boats, and off-grid systems
- Built-in 80A MPPT solar charge controller and battery charger simplify installation while maximizing solar charging efficiency
- Supports solar, battery, utility, and generator integration for flexible off-grid power management
Advanced Solar & Battery Management
- 90–230VDC MPPT voltage range supports flexible solar panel configurations
- Three charging modes: Solar First, Solar & Utility, and Only Solar
- Supports lead-acid and lithium batteries for flexible energy storage
Smart Control & Reliable Operation
- Three output priority modes: Utility First (USB), Solar First (SUB), and SBU Priority for flexible energy management
- LCD display provides convenient system configuration and real-time status monitoring
- Automatic AC recovery restores operation automatically after utility power returns
Comprehensive Protection & Durable Design
- Built-in protection against overload, over-temperature, and short circuits
- Pure sine wave output ensures safe operation for sensitive electronics
- Wide operating temperature range provides reliable performance in demanding off-grid environments
80A MPPT with a Wide 90–230VDC Input Range
The onboard MPPT charge controller handles a 90–230VDC operating window with a 250V open-circuit ceiling, giving installers real flexibility in how a 24V solar array gets strung together. A 22A max input current and an 80V ±5V startup threshold round out the front end, so the inverter starts pulling in solar power early and keeps tracking efficiently as conditions change through the day.
Charging Voltages Tuned for Flooded, AGM, and Gel
Bulk charging runs at 29.2VDC for flooded batteries and 28.8VDC for AGM or gel, tapering to a 27.6VDC float stage once the battery is topped off — with overcharge protection engaging at 33VDC as a hard ceiling. That kind of chemistry-aware charging profile helps get a full charge without cooking the battery bank over time.
Where It Fits
NOVA MAX 3K Specifications
PV Input
| Rated PV power | 3,000 W |
| Max. PV open circuit voltage | 250 VDC |
| PV array MPPT voltage range | 90–230 VDC |
| Maximum input current | 22 A |
| Start-up voltage | 80V ± 5V DC |
| Number of MPP trackers | 1 |
AC Input
| Input voltage waveform | Sinusoidal (utility or generator) |
| Nominal input voltage | 120VAC |
| Max. AC input voltage | 150VAC |
| Nominal input frequency | 50Hz / 60Hz (auto detection) |
| Transfer time | 10ms (UPS) / 20ms (appliances) |
| Efficiency (line mode) | > 95% |
AC Output
| Rated power | 3kVA / 3kW |
| Surge power (5s) | 6,000 W |
| Output voltage | 120VAC ± 5% |
| Output waveform | Pure sine wave |
| Output frequency | 50Hz / 60Hz |
| Peak efficiency | 91% |
Battery, Charger & General
| Nominal DC input voltage | 24 VDC |
| MPPT charge controller | 80 A |
| Bulk charging voltage | 29.2V (flooded) / 28.8V (AGM/gel) |
| Float charging voltage | 27.6 VDC |
| Overcharge protection | 33 VDC |
| Operating temperature | 14°F to 104°F |
| Storage temperature | 5°F to 140°F |
| Dimensions | 5.6 × 12.1 × 18.8 in |
| Net weight | 26.5 lbs |
Common Questions
What battery types does the NOVA MAX 3K support?
It supports both lead-acid and lithium batteries, with charging voltages tuned separately for flooded and AGM/gel chemistries.
Does it include a solar charge controller, or do I need a separate one?
The 80A MPPT solar charge controller is built in, so no separate charge controller is needed for a 24V solar array within its 90–230VDC input range.
What happens during a brief power outage?
The transfer time is 10ms in UPS mode and 20ms for standard appliances, and the unit automatically restores operation once utility power returns — no manual reset required.
Can this run alongside a generator?
Yes. AC input accepts sinusoidal power from either utility or a generator, up to 150VAC maximum.
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