Rich Solar NOVA MAX 3K 3000W 24V Off-Grid Hybrid Solar Inverter

The Rich Solar NOVA MAX 3K Hybrid Inverter Puts a 3000W Pure Sine Inverter, an 80A MPPT Solar Charger and a Battery Charger in One 24V Unit

The Rich Solar NOVA MAX 3K (model RS-H3024) is an off-grid hybrid inverter for 24V battery systems. The case and the manual label it NOVA 3K24. It combines a 3,000W pure sine wave inverter, an 80A MPPT solar charge controller and an AC battery charger, so solar panels, a battery bank and utility or generator power all connect to one wall-mounted unit.

Rich Solar builds it for RVs, trailers, campers, vans, trucks, boats, cabins and other off-grid systems. It accepts up to 3,000W of solar at up to 250V open-circuit voltage, delivers a 6,000W surge for 5 seconds, and moves loads to battery power in 10ms in UPS mode or 20ms in appliance mode.

Current Model. Rich Solar now offers the Rich Solar NOVA MAX 3K 2026 3000W 24V Off-Grid Hybrid Solar Inverter as the current version of this inverter.

Rich Solar NOVA MAX 3K Hybrid Inverter Features

3000W of Pure Sine Power With a 6000W Surge

The inverter supplies 3,000W (3kVA) continuously at 120VAC ±5% and 60Hz or 50Hz, with 91% peak efficiency and harmonic distortion under 5% on linear loads. Surge capacity is twice the rated power for 5 seconds, which helps motors and compressors start. The manual says it can run motor-type appliances such as fans, refrigerators and air conditioners. The output can also be set to 110V or 127V from the LCD.

Built-In 80A MPPT Solar Charger

One MPPT tracker handles up to 3,000W of solar. The MPPT range is 90V to 230V DC, maximum open-circuit voltage is 250V DC, and maximum input current is 22A. Charging starts at 80V ±5V.

Charging and Output Priorities You Choose

Three charger modes decide where battery charging comes from: Solar First, Solar and Utility (the default), or Only Solar. Three output modes decide what powers your loads: Utility First, Solar First, or SBU, which uses solar, then battery, then utility. Total charging current from solar and utility together is adjustable from 10A to 80A in 10A steps, and the utility share has its own limit.

Lead-Acid and Lithium Battery Support

The charger uses a 3-step profile. Bulk voltage is 29.2V for flooded batteries and 28.8V for AGM or gel, float is 27.6V, and overcharge protection trips at 33V. A user-defined setting lets you enter your own bulk, float and low DC cut-off voltages. The manual also lists lithium settings, including CAN and RS485 protocol options, that set charge values automatically. Battery equalization is available for flooded and user-defined batteries.

LCD Control, PC Monitoring and Auto Restart

An LCD with four buttons and three LEDs shows input and output voltage, frequency, PV voltage, charging current, battery voltage and load. Settings are made from the same panel. The included communication cable and software CD connect the inverter to a computer for monitoring. When utility power returns, the unit restarts on its own, and the manual lists a cold start function with a 23.0V DC cold start voltage.

Protection and Parallel Ports

Built-in protection covers overload, over-temperature and output short circuits. The low DC cut-off moves with load, from 22.0V under 20% load down to 19.2V at 50% load and above, and the high DC cut-off is 33V. A 120VAC input breaker sits on the bottom panel next to parallel connection ports. The manual's parallel appendix covers up to nine units in single phase, for up to 27kW.

Real-World Applications

RVs, trailers and campers. Charge a 24V house bank from roof solar, plug into shore power or a generator at camp, and run 120V appliances from one unit.

Vans, trucks and overland rigs. Pair solar with a 24V lithium or lead-acid bank to power tools, cooking appliances and electronics on the road.

Boats. Rich Solar lists boats among its uses. Combine deck solar and dock power to keep house batteries charged.

Off-grid cabins. Set SBU priority so solar and the battery carry the loads, with a generator on the AC input as backup.

Practical Comparison

NOVA MAX 3K Versus Separate Components

A system built from separate parts needs an inverter, a solar charge controller, an AC battery charger and a way to switch between sources, each wired and set up on its own. The NOVA MAX 3K puts all four jobs in one case with one display and one set of priority settings.

NOVA MAX 3K Versus a Modified Sine Inverter

A modified sine inverter can run simple loads, but its stepped output isn't suited to every device. The NOVA MAX 3K produces pure sine wave output, which Rich Solar says is safe for sensitive electronics, and it adds solar and AC charging that a basic inverter lacks.

Buyer Guidance

Battery, Cable and Breaker Sizing

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 with ring terminals, sized for a typical current of 145A, plus a separate DC over-current protector between the battery and the inverter. The manual recommends a 50A AC breaker on the input, 8 AWG AC wiring and 12 AWG PV wiring. Install a DC breaker between the panels and the inverter and a surge protection device rated 500V. Keep the array's open-circuit voltage under 250V and above the minimum battery voltage.

Mounting and Installation

Mount the inverter vertically on concrete or another non-combustible surface, at eye level so the display is easy to read, using 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. The manual says only qualified personnel should install it, and all wiring should be done with the DC and AC sources disconnected.

This May Be A Good Fit If

• You have or plan a 24V battery bank
• Your loads stay under 3,000W running and 6,000W at start-up
• You want up to 3,000W of solar wired in the 90V to 230V range
• You want solar, shore and generator charging in one unit

Common Questions

Can I Use Lithium Batteries With It?

Yes. Rich Solar says it supports lead-acid and lithium batteries. The manual lists lithium settings that set charge values automatically, and a BMS port carries RS232, RS485 and CAN signals. The manual recommends buying a dedicated communication cable for lithium battery communication.

How Much Solar Can I Connect?

Up to 3,000W. Wire the panels so the string stays in the 90V to 230V MPPT range, never exceeds 250V open-circuit voltage, and draws no more than 22A.

Can It Run an Air Conditioner?

The manual lists air conditioners among the motor loads it can power, within the 3,000W rating and 6,000W surge. It also cautions that an air conditioner needs 2 to 3 minutes before it restarts, so check whether yours has a time-delay function before you install.

Does It Work With a Generator?

Yes. The AC input accepts utility or generator power at 120V nominal. Appliance mode accepts 80V to 140V and UPS mode accepts 90V to 140V. If a generator's power isn't accepted, the manual suggests checking this setting.

What's Included

• 1 x Rich Solar NOVA MAX 3K Hybrid Inverter (RS-H3024)
• 1 x Communication Cable
• 1 x Software CD
• 1 x User Manual

Solar, Shore and Generator Power for Your 24V System

The Rich Solar NOVA MAX 3K Hybrid Inverter gives a 24V system 3,000W of pure sine power, an 80A MPPT solar charger, AC charging and flexible priority settings in one wall-mounted unit. If you'd like help sizing the array, battery bank or cables, the Outbound Power team is happy to help.

Rich Solar NOVA MAX 3K 3000W 24V Off-Grid Hybrid Solar Inverter Manuals and Documents

Rich Solar NOVA MAX 3K (NOVA 3K24) User Manual

Rich Solar NOVA MAX 3K (NOVA 3K24) Specification Sheet