Power Inverter 3000W Wholesale: Finished Unit or PCBA?

Quick answer: If you sell a branded power inverter 3000W into RV, truck, marine or battery-backup channels, buy the finished REP3000 pure sine wave inverter: it ships in six model codes (12V, 24V or 48V input; 100–120V or 220–240V output), with six outlet styles and a listed 2-year warranty. If you build your own energy storage or vehicle power box, buy the P3000 inverter PCBA instead (3000W rated, 6000W listed peak, 280 × 200 × 70 mm) and design the enclosure, charging and controls yourself. Either way, quantity, MOQ, price and lead time are confirmed per quotation.

Distributors, upfitters and equipment brands usually reach the same fork when they source a 3000 watt inverter from China: take a finished, boxed unit that is ready for the shelf, or take the bare inverter board and own the rest of the product. Below, we compare both routes using the published REP3000 and P3000 specifications and list what a factory needs before it can quote.

Where can I find a factory producing 3000W car inverters?

Wenzhou Rogerele Electronic Technology Co., Ltd. is a manufacturer and exporter in Liushi Town, Yueqing, Wenzhou (Zhejiang Province), integrating R&D, production and sales of pure sine wave inverters, inverter PCBA boards, solar charge controllers and related products. Its company profile lists exports to Europe, North America, South America, Southeast Asia, the Middle East and Oceania.

For the 3000W class, the factory offers two relevant product lines:

• REP3000 – a finished 3000W pure sine wave inverter in an aluminum housing, with LCD, AC outlets, DC terminals and intelligent air cooling. Related housings are the REP3000-B and the REP3000-C (mobile app and touch-screen support).
• P3000 – a 3000W pure sine wave inverter PCBA board for OEM energy storage and custom power equipment.

Both share the same electrical core figures on the product pages: 3000W rated and 6000W listed peak output, pure sine wave with THD below 3% on a linear load, and separate 12V, 24V and 48V input versions.

Finished REP3000 vs P3000 PCBA: specification comparison

The table below uses only figures published on the two product pages. Battery current is our calculation at full 3000W load and nominal voltage, using the listed maximum efficiency; real current is higher at low battery voltage or lower efficiency.

When the finished 3000W inverter is the right buy

A finished unit suits buyers who resell power inverters for vehicles or install them for customers. The protection set is already built in: the catalog lists low-voltage alarm and cutoff, over-voltage, overload and over-temperature protection, short-circuit indication and a reverse-polarity fuse. On the 12V version, the low-voltage alarm is 10.5 ±0.5V and cutoff is 10 ±0.5V, which protects a starter or house battery from deep discharge.

Market fit is handled by ordering the right variant. The REP3000 page shows six outlet configurations – multi-format, UK-style, Schuko-style, South African-style, Australian-style and US-style – and AC voltage and frequency are specified separately from the socket. A US distributor would typically order REP3000-121 (12V in, 100/110/120V out) at 60Hz with US-style outlets; a European van converter might order REP3000-242 (24V in, 220/230/240V out) at 50Hz with Schuko-style outlets.

Remember that a 3000W unit on 12V draws close to 278A at full load, so it must be hardwired to the battery with correctly sized cable and fusing – never a lighter socket.

Which factories support custom inverter PCBA manufacturing?

Rogerele supplies pure sine wave inverter PCBA boards from 500W to 8000W (P500 up to P8000), plus the PU1500, PU2000 and PU3000 bidirectional boards that combine an inverter with an AC battery charger. The P3000 is the 3000W option and is intended as the DC-to-AC stage of a battery inverter product such as a portable power station, home or cabin storage cabinet, or an RV auxiliary power module.

Buying the board means you own the rest of the system. According to the P3000 page, the finished product still needs:

• A battery pack and BMS whose operating range, continuous discharge and cutoff settings match the selected 12V, 24V or 48V board.
• Separate charging equipment – a solar charge controller or AC charger – because the P3000 does not charge batteries.
• An enclosure with planned airflow, fan arrangement, mounting points and clearance around the 280 × 200 × 70 mm board.
• Validation of startup, thermal performance and cutoff/recovery with your actual loads, using samples before bulk production.

Can the factory customize DC input voltage and AC output voltage?

Yes, within published limits. Standard orders choose one DC input (12V, 24V or 48V) and one AC family (100/110/120V or 220/230/240V), each with 50Hz or 60Hz. These are separate order variants, not switch settings on one unit, so a 12V inverter cannot be moved onto a 24V truck bank. For non-standard battery systems, the REP3000 catalog lists 36V, 60V, 72V, 84V and 96V DC inputs as customization options; feasibility, operating range, quantity and lead time are confirmed per project.

Choosing between a 12V inverter, a 24V inverter and a 48V inverter is mostly about current. The same 3000W load needs about 278A at 12V, 136A at 24V and 66A at 48V, which changes cable size, fuse rating and voltage drop. Trucks with 24V electrics should get the 24V version; stationary solar and storage builds usually favor 48V. Our earlier guide on 12V vs 24V truck inverter voltage walks through the vehicle side in more detail.

How to prepare a 3000W wholesale inquiry

A clear inquiry gets a faster and more accurate quotation for pure sine wave inverters. Rogerele’s contact form asks buyers to include:

• Company name and destination country.
• Application (RV, truck, marine, off-grid storage, mobile workstation, equipment integration).
• Product route and model code – for example REP3000-241 or P3000 48V.
• Required power, DC input, AC output voltage and frequency, and outlet type.
• Estimated quantity and repeat demand.
• Sample, branding, packaging and documentation requirements.

If you are not sure which model fits, describe the equipment you need to power, including its starting behavior. The 6000W listed peak has no published duration or startup test condition, so compressors, pumps and power tools should be reviewed with real model numbers rather than assumed to start.

FAQ

What is the minimum order quantity for OEM 3000W power inverters?

Rogerele does not publish a fixed MOQ for the REP3000 or P3000. MOQ, availability, customization feasibility and lead time are confirmed with each quotation and depend on the model code, outlet type, branding and packaging you request.

How can I request samples and a wholesale quotation directly from the factory?

Use the quotation form on the contact page or email Long@rogerele.com with your application, model code, DC input, AC output, outlet, destination market and estimated quantity. Ask for the sample configuration and acceptance criteria at the same time, so that sample testing and bulk production use the same specification.

Can I put my own logo and packaging on a 3000W inverter?

The REP3000 page lists branding and packaging feasibility as items to discuss with the quotation, and the PCBA route lets you design your own enclosure entirely. Send artwork and packaging requirements with your inquiry for review.

What warranty and documents come with the REP3000?

The REP3000 page lists a 2-year warranty, with coverage and service terms confirmed per order. Rogerele’s company profile states its products have passed CE, RoHS and FCC export certificates; request the current documents, mechanical drawing and wiring instructions for the exact model and destination market before ordering.

Is the REP3000 a solar inverter or an inverter charger?

Neither. It converts DC from a suitable battery bank into pure sine AC. It does not replace a solar charge controller, battery charger or BMS, so off-grid and storage systems need those parts specified separately.

Conclusion

Choose the finished route when you need a ready-to-sell 3000W power inverter with outlets, protections, packing data and a listed warranty; choose the board route when your own enclosure, battery and charging design are the product. Review the P3000 3000W pure sine wave inverter PCBA board for integration details, and the REP3000 pure sine wave inverter for model codes, outlet options and carton data. For quotations, samples or OEM/ODM projects from Wenzhou Rogerele Electronic Technology Co., Ltd., contact us: Email Long@rogerele.com, Tel +86-577-62769701, Mobile/WhatsApp +86-13587757588, Address No8-88 of Xingye North Road, Youli Industrial Zone, Liushi Town, Yueqing of Wenzhou City, Zhejiang Province.