# Relpol RPN-1VFT-A400 3-Phase Monitoring Relay 1P 3(N)400/230V AC 50/60 Hz

**URL:** https://aio.lv/en/product--relpol-864374--12459027
**Data updated:** 2026-05-18 09:28 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Relpol
**Manufacturer code:** 864374
**EAN:** 5900005262821
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 34.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 28.92 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-864374--12459027

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The Relpol RPN-1VFT-A400 is a 3-phase monitoring relay designed for industrial and electrical control systems. It features a 1P output and operates at a nominal voltage of 3(N)400/230V AC with a frequency of 50/60 Hz. This device ensures reliable monitoring of phase parameters, protecting equipment from voltage irregularities. It is an essential component for maintaining stability and safety in complex electrical installations.

## Long description

The Relpol RPN-1VFT-A400 is a high-precision 3-phase monitoring relay engineered for industrial and electrical control systems. This device provides continuous oversight of phase parameters, ensuring that electrical equipment operates within safe voltage limits. By detecting irregularities such as phase loss or voltage fluctuations, it helps prevent potential damage to sensitive machinery and improves the overall reliability of electrical installations.
Advantages
This monitoring relay offers robust protection for complex electrical networks by providing real-time diagnostics of power supply conditions. Its design focuses on operational stability, allowing for seamless integration into existing control panels. The device is built to withstand demanding industrial environments, ensuring long-term performance and consistent monitoring accuracy for 3-phase systems.
Suitable for
Industrial automation and control systems
Protection of 3-phase motors and pumps
Electrical distribution boards
Monitoring power supply stability in commercial facilities
This relay may not be suitable for single-phase applications or systems operating outside the specified nominal voltage range of 3(N)400/230V AC. It is also not intended for use in high-voltage power transmission grids or environments where extreme environmental conditions exceed the manufacturer's technical ratings.
Key specifications
Nominal voltage: 3(N)400/230V AC
Frequency: 50/60 Hz
Output configuration: 1P (1 changeover contact)
Application: 3-phase monitoring
How to use
The relay should be installed by a qualified professional within a standard electrical control cabinet. Connect the phase lines to the designated input terminals according to the wiring diagram provided with the device. Ensure that the supply voltage matches the nominal specifications of the relay. Once connected, the device will automatically begin monitoring the phase parameters and will trigger the output contact if an irregularity is detected.
What to consider before purchase
Verify that your system voltage matches the 3(N)400/230V AC requirement.
Ensure the relay is compatible with your existing control circuit voltage.
Confirm that the installation space meets the necessary environmental standards for industrial components.
Usage recommendations
Regularly inspect the relay connections to ensure they remain secure and free from oxidation. Periodically test the monitoring function during scheduled maintenance to confirm that the protection system remains fully operational.

## FAQ

### How much does the Relpol RPN-1VFT-A400 3-Phase Monitoring Relay cost, and is it available for purchase?

The price is 34.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 06.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Relpol 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 Relpol 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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