# Inverter volt polska Sinus 4000 Plus 4000W 12V pure sine wave power inverter

**URL:** https://aio.lv/en/product--volt-polska-3sir400012--5069967
**Data updated:** 2026-04-24 17:39 (EEST)
**Category:** Power Inverters
**Manufacturer:** volt polska
**Manufacturer code:** 3SIR400012
**EAN:** 5907768270018
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 242.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 200.82 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--volt-polska-3sir400012--5069967

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.89 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The volt polska Sinus 4000 Plus is a 4000W 12V pure sine wave power inverter designed to convert 12V DC to stable AC for household and mobile equipment. Suitable for powering appliances, tools and electronics that require a clean sinusoidal output. Useful for off-grid, RV, boat, or backup power applications where reliable AC supply is needed.

## Long description

The volt polska Sinus 4000 Plus 4000W 12V pure sine wave power inverter converts 12V DC into stable AC power suitable for household and mobile equipment. Designed to deliver up to 4000 watts of continuous output, this inverter produces a true sine wave output that closely matches mains electricity, making it compatible with sensitive electronics, motors and appliances. Its intended applications include off-grid systems, recreational vehicles, boats and emergency backup power where a reliable AC supply is required.
Advantages
The pure sine wave output minimizes interference and reduces the risk of damage to audio/video equipment, computers and other sensitive devices. A high continuous power rating allows running several appliances or power tools simultaneously within the inverter’s capacity. The unit is built for 12V DC input, offering straightforward integration with battery banks and vehicle electrical systems. Thermal and overload protections help maintain safe operation under varying load conditions.
Suitable for
Powering laptops, TVs, and audio equipment that require clean AC waveform
Running refrigerators, small freezers and kitchen appliances in RVs or boats
Operating power tools and chargers for cordless tools within the inverter’s power limits
Emergency backup for lighting, communication devices and essential home electronics
Integration into off-grid solar or battery systems to provide AC power
When it may not be suitable
This inverter may not be suitable if your total continuous AC demand regularly exceeds 4000 watts or if high startup currents of certain appliances exceed the inverter’s surge capacity. It is not a direct replacement for grid-tied inverters used for solar installations that require grid synchronization and export functionality. Users with only intermittent, low-power needs may prefer a smaller, more efficient inverter.
Key specifications
Output power: up to 4000 W continuous
Input voltage: 12 V DC
Output waveform: pure (true) sine wave
Output voltage: standard AC mains level appropriate for local use
Protection features: overload protection, thermal shutdown and short-circuit protection
Cooling: built-in cooling (fan-assisted) for thermal management
How to use
Connect the inverter to a compatible 12V battery bank or vehicle battery using appropriately sized cables and secure battery terminals. Ensure correct polarity when making connections. Place the inverter in a well-ventilated location clear of flammable materials and allow space for air circulation around cooling vents. Turn on the inverter and check indicators to confirm normal operation before connecting sensitive equipment. Observe the inverter’s load limits and avoid continuous operation beyond rated capacity; for inductive loads with high startup currents allow a margin under the 4000W rating.
What to consider before purchase
Sum of expected continuous AC loads and peak startup currents of connected devices
Battery capacity and state of charge required to support intended run times
Proper cable size and fuse or circuit breaker placement between battery and inverter
Ventilation space and mounting location to prevent overheating
Compatibility of output voltage and frequency with local appliances
Usage recommendations
For reliable performance, match inverter capacity to the combined continuous and peak loads, maintain battery health with appropriate charging systems, and install inline fuses or breakers close to the battery. Periodically check connections and cooling fans, and avoid heavy continuous loads near the inverter’s maximum rating to extend operational life.

## FAQ

### How much does the Inverter volt polska Sinus 4000 Plus 4000W 12V cost, and is it available for purchase?

The price is 242.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Inverter volt polska Sinus 4000 Plus 4000W 12V be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All volt polska products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized volt polska service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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