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The Rich Solar NOVA MAX 3K 2026 (model RS-H3024X) is an off-grid hybrid inverter for 24V battery systems. One wall-mounted unit holds a 3,000W pure sine wave inverter with a 6,000W surge, an 80A MPPT solar charge controller and an AC battery charger, so solar, a battery bank, utility power and a generator all work through the same box.
Rich Solar builds it for RVs, campers, vans, trailers, boats, cabins and solar home systems. Built-in Wi-Fi lets you monitor and control the system from an app, and up to nine units can run in parallel for single-phase, split-phase or three-phase power when your needs grow.
The inverter delivers 3,000W (3,000VA) at 120VAC ±5% and 50Hz or 60Hz, with harmonic distortion under 5% on linear loads and up to 91% efficiency in inverter mode. A 6,000W surge for 5 seconds helps start motors and compressors. Rich Solar says the pure sine output is safe for sensitive electronics and household appliances. The manual also lets you set the output to 110V or 127V.
The built-in MPPT charger accepts up to 3,000W of solar with an MPPT range of 90V to 230V DC, a 250V DC maximum open-circuit voltage and a 22A maximum input current. Charging starts at 80V ±5V. Solar and utility charging together reach 80A, and you set the total from 10A to 80A in 10A steps.
Choose Solar First, where utility charges the battery only when solar isn't available; Solar and Utility, where both charge at once for faster charging; or Only Solar. For loads, choose Utility First, Solar First, or SBU priority, which uses solar first, then the battery, and turns to utility only when the battery is low.
When utility power fails, the inverter switches loads to battery in 10ms in UPS mode or 20ms in appliance mode. UPS mode accepts 90V to 140V AC input for computers and other sensitive equipment, and appliance mode accepts 80V to 140V. When AC power returns, the unit restarts automatically with no manual reset.
Built-in Wi-Fi app monitoring lets you track status and change settings remotely. The LCD shows battery type, battery voltage and charging status, grid voltage and frequency, output voltage, current and power, and PV voltage, current and power. It also keeps a real-time clock and records daily, monthly, yearly and total generated energy along with fault codes. Communication options are Wi-Fi, RS232, RS485 and CAN.
The charger works with AGM, gel, flooded and lithium batteries. Bulk voltage is 29.2V for flooded and 28.8V for AGM or gel, float is 27.6V, and overcharge protection is set at 33V. A BMS port supports lithium battery communication. Rich Solar adds a cold start function, with a 23V cold start voltage, and battery equalization to improve reliability and extend battery life.
Rich Solar rates the NOVA MAX 3K 2026 for parallel operation with up to nine units. The manual lists up to 27kW in single phase, with up to seven units on one phase of a three-phase system or eight on one phase of a split-phase system. Current sharing and parallel communication ports are on the bottom panel.
RVs and travel trailers. Charge a 24V house bank from roof solar and campground shore power, then run 120V appliances when you're parked off-grid.
Marine and boats. Combine solar and dock power to keep house batteries charged and AC loads running.
Off-grid cabins. Use SBU priority so solar and the battery carry the load, with a generator on the AC input as backup.
Solar home systems. Start with one unit, then add more in parallel for more power or split-phase output.
A system built from a standalone inverter, a separate MPPT controller, an AC battery charger and a way to switch between sources means more parts to wire, mount and set up. The NOVA MAX 3K 2026 handles all of those jobs in one case, with one display, one app connection and one set of charging and output priorities.
A modified sine inverter can run simple loads but isn't suited to every device. The NOVA MAX 3K 2026 produces pure sine wave output for sensitive electronics and household appliances, and it adds solar charging, AC charging and fast transfer that a basic inverter lacks.
This model runs on a 24V battery bank, and the manual suggests at least 200Ah of capacity. It calls for 1/0 AWG battery cable sized for a typical current of 145A, with a separate DC over-current protector between the battery and the inverter. The manual recommends a 150A, 40V DC battery breaker per inverter, a separate 50A AC input breaker, 8 AWG AC wiring and 12 AWG PV wiring. Install a DC breaker between the panels and the inverter, add a surge protection device rated 500V, and keep the array's open-circuit voltage under 250V.
Mount the inverter vertically on concrete or another non-combustible surface, at eye level, with three M4 or M5 screws. Leave about 7.9 in (20 cm) at the sides and 19.7 in (50 cm) above and below for cooling. Rich Solar rates operation from 14°F to 104°F. For parallel systems, every inverter must share the same battery bank, and battery cables should all be the same length.
Yes. Rich Solar lists AGM, gel, flooded and lithium batteries, and the BMS port supports lithium battery communication. The manual recommends a dedicated communication cable for this connection.
Up to 3,000W. Keep each string inside the 90V to 230V MPPT range, under 250V open-circuit voltage, and at no more than 22A.
The manual lists air conditioners and refrigerators among the motor loads it can power, within the 3,000W rating and 6,000W surge. It cautions that an air conditioner needs 2 to 3 minutes before it restarts, so check whether yours has a time-delay function.
Yes, with more than one unit. The manual covers split-phase and three-phase systems with up to nine inverters, set up from the LCD on each unit.
The Rich Solar NOVA MAX 3K 2026 Hybrid Inverter gives a 24V system 3,000W of pure sine power, an 80A MPPT solar charger, AC charging, Wi-Fi monitoring and room to expand in parallel. If you'd like help sizing the array, battery bank or parallel setup, the Outbound Power team is happy to help.
Rich Solar NOVA MAX 3K 2026 3000W 24V Off-Grid Hybrid Solar Inverter Specifications |
|
|---|---|
| Model | RS-H3024X |
| Inverter Output | |
| Rated Output Power | 3000W (3000VA) |
| Surge Power | 6000W for 5 seconds |
| Output Waveform | Pure sine wave |
| Output Voltage | 120VAC ±5% |
| Output Voltage Settings | 110V, 120V (default), 127V |
| Output Frequency | 50Hz / 60Hz (selectable) |
| Inverter Efficiency | Up to 91% |
| Total Harmonic Distortion | <5% linear load |
| Overload Protection | 100ms at 205% load, 5s at 150% load, 10s at 110% to 150% load |
| Output Priority Modes | Utility First, Solar First, SBU |
| Solar Charger | |
| Charger Type | MPPT |
| Maximum PV Input Power | 3000W |
| Maximum PV Open Circuit Voltage | 250VDC |
| MPPT Voltage Range | 90VDC to 230VDC |
| Maximum PV Input Current | 22A |
| PV Start-Up Voltage | 80VDC ±5V |
| AC Input and Charger | |
| Input Waveform | Sinusoidal (utility or generator) |
| Nominal Input Voltage | 120VAC |
| Input Voltage Range (UPS) | 90VAC to 140VAC |
| Input Voltage Range (Appliance) | 80VAC to 140VAC |
| Maximum AC Input Voltage | 150VAC |
| Input Frequency | 50Hz / 60Hz (auto detection) |
| Transfer Time | 10ms (UPS), 20ms (appliance) |
| Line Mode Efficiency | >95% |
| Maximum Utility Charge Current | 80A |
| Maximum Charge Current | 80A (utility + solar), set from 10A to 80A in 10A steps |
| Charger Source Modes | Solar First, Solar and Utility (default), Only Solar |
| Battery | |
| Nominal DC Voltage | 24VDC |
| Compatible Battery Types | AGM, gel, flooded, lithium |
| Charging Algorithm | 3-step (bulk, absorption, float) |
| Bulk Charging Voltage | 29.2VDC flooded, 28.8VDC AGM / gel |
| Float Charging Voltage | 27.6VDC |
| Overcharge Protection | 33VDC |
| Battery Cold Start Voltage | 23VDC |
| Battery Equalization | User-configurable |
| Low DC Cut-Off Voltage | User-configurable (default 22.0V under 20% load, 20.4V at 20% to 50%, 19.2V at 50% and above) |
| Suggested Battery Capacity | 200Ah minimum |
| Recommended Battery Cable | 1/0 AWG, 145A typical |
| Recommended Battery Breaker | 150A / 40VDC per inverter |
| Monitoring and Communication | |
| Display | LCD with 4 function buttons |
| Communication | Wi-Fi, RS232, RS485, CAN |
| App Monitoring | Built-in Wi-Fi |
| Ports | BMS port, communication port, current sharing port, parallel communication port |
| Parallel Operation | |
| Maximum Parallel Units | 9 |
| Single Phase | Up to 9 units, 27kW / 27kVA |
| Three Phase | Up to 9 units, max 7 units on one phase |
| Split Phase | Up to 9 units, max 8 units on one phase |
| Physical | |
| Dimensions (D x W x H) | 5.61 x 12.12 x 18.80 in |
| Net Weight | 26.5 lb |
| Package Dimensions | 24 x 8 x 16 in |
| Gross Weight | 30 lb |
| Cooling | Smart temperature-controlled fan |
| Operating Temperature | 14°F to 104°F |
| Storage Temperature | 5°F to 140°F |
| Humidity | 5% to 95% RH, non-condensing |
| Mounting | Vertical, concrete or other non-combustible surface |
| Recommended AC Input Breaker | 50A |
| AC Wire Size | 8 AWG |
| PV Wire Size | 12 AWG |
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