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

**URL:** https://aio.lv/en/product--relpol-864372--12459008
**Data updated:** 2026-05-18 09:30 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Relpol
**Manufacturer code:** 864372
**EAN:** 5900005262760
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 34.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 28.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-864372--12459008

## 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-1VFS-A400 is a professional 3-phase monitoring relay designed for industrial and electrical control systems. It supports 3(N) 400/230V AC voltage at 50/60 Hz and features a 1P output configuration. This device ensures reliable monitoring of phase parameters, protecting electrical equipment from voltage irregularities. It is an essential component for maintaining safety and stability in complex power distribution networks.

## Long description

The Relpol RPN-1VFS-A400 is a professional 3-phase monitoring relay engineered for industrial and electrical control systems. This device is specifically designed to monitor phase parameters in 3(N) 400/230V AC power networks operating at 50/60 Hz. By continuously tracking voltage levels, it provides essential protection for sensitive electrical equipment against irregularities such as phase loss or voltage fluctuations, ensuring the overall stability and safety of complex power distribution infrastructures.
Advantages
The primary benefit of this monitoring relay is its high reliability in maintaining operational continuity within electrical systems. Its robust design allows for precise detection of power supply deviations, which helps prevent potential damage to connected machinery and control components. The device is built to meet demanding industrial standards, offering a compact solution that integrates seamlessly into standard control panels while providing consistent performance in various environmental conditions.
Suitable for
Industrial automation and control systems
Power distribution networks
Protection of three-phase motors and electrical equipment
Monitoring of phase sequence and voltage stability
This relay may not be suitable for applications requiring DC voltage monitoring or systems operating outside the specified 400/230V AC voltage range. It is also not intended for use in high-current power switching applications where a dedicated contactor or circuit breaker would be required to handle the primary load.
Key specifications
Voltage range: 3(N) 400/230V AC
Frequency: 50/60 Hz
Output configuration: 1P (single pole)
Application: 3-phase monitoring
Installation should be performed by qualified personnel in accordance with local electrical regulations. The relay is typically mounted on a standard DIN rail within a control cabinet. Ensure that the input terminals are correctly wired to the phase and neutral lines as indicated on the device housing. Once connected, the relay automatically begins monitoring the supply parameters, with status indicators providing visual feedback on the operational state of the network.
What to consider before purchase
Verify that your network voltage matches the 400/230V AC specification
Ensure the relay is compatible with your existing control panel layout
Confirm that the 1P output configuration meets your system's switching requirements
Regularly inspect the relay and its terminal connections to ensure they remain secure and free from oxidation, and verify that the monitoring functions are correctly triggering during scheduled maintenance intervals.

## FAQ

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

The price is 34.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 19 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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