# Novatek-Electro PEF-301 Automatic Phase Switch 16A 400V AC

**URL:** https://aio.lv/en/product--novatek-electro-pef-301--12444702
**Data updated:** 2026-05-18 02:42 (EEST)
**Category:** Control Systems
**Manufacturer:** Novatek-Electro
**Manufacturer code:** PEF-301
**EAN:** 5903111135089
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 97.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 80.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--novatek-electro-pef-301--12444702

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Novatek-Electro PEF-301 is an automatic phase switch designed for 400V AC power systems with a 16A current rating. This device ensures continuous power supply to single-phase loads by automatically selecting the optimal phase from a three-phase network. It is ideal for protecting sensitive equipment from phase failure or voltage fluctuations, providing reliable operation in industrial and residential electrical installations.

## Long description

The Novatek-Electro PEF-301 is an automatic phase switch engineered to maintain a continuous power supply for single-phase loads within a three-phase 400V AC electrical network. By monitoring the voltage levels across all three phases, the device automatically selects and connects the load to the phase with the most stable parameters, ensuring that critical equipment remains operational even if one or two phases fail or experience significant voltage fluctuations.
Advantages
This automatic phase switch offers a robust solution for maintaining power stability without manual intervention. Its primary benefit lies in its ability to rapidly detect phase loss or voltage deviations, instantly switching the load to a healthy phase to prevent equipment downtime. The device is built to handle a current rating of 16A, making it suitable for a wide range of residential and industrial applications where reliable power is essential for sensitive electronics and control systems.
Suitable for
Residential power supply systems to prevent outages during phase failure.
Industrial control panels requiring continuous single-phase power.
Sensitive electronic equipment that requires stable voltage input.
Backup power management in three-phase electrical installations.
When it may not be suitable
This device is not designed for loads exceeding the 16A current rating, and attempting to connect higher-power equipment may damage the unit. It is also not intended for use in DC power systems or networks operating outside the specified 400V AC range.
Key specifications
Rated voltage: 400V AC
Maximum current: 16A
Phase monitoring: Three-phase input
Function: Automatic phase selection
How to use
The PEF-301 should be installed by a qualified electrician within a standard electrical distribution board. The three-phase input lines are connected to the designated terminals, and the single-phase load is connected to the output terminal. Once powered, the device continuously monitors the incoming voltage. If the voltage on the active phase drops below or rises above the set thresholds, the internal relay automatically switches the load to the next available phase that meets the required parameters.
What to consider before purchase
Ensure your total load current does not exceed 16A.
Verify that your electrical installation is a three-phase 400V AC system.
Check the available space in your distribution cabinet for mounting.
Confirm that the device meets the specific voltage stability requirements of your connected equipment.
Usage recommendations
For optimal performance and safety, ensure all terminal connections are tightened securely according to the installation manual. Regularly inspect the device for signs of wear or overheating, and ensure the surrounding environment is free from excessive moisture or dust.

## FAQ

### How much does the Novatek-Electro PEF-301 Automatic Phase Switch cost, and is it available for purchase?

The price is 97.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 09.07.2026 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 Novatek-Electro PEF-301 Automatic Phase Switch 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 Novatek-Electro 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 Novatek-Electro 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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