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

**URL:** https://aio.lv/en/product--relpol-864371--12463426
**Data updated:** 2026-05-18 09:43 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Relpol
**Manufacturer code:** 864371
**EAN:** 5900005262739
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 31.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 26.44 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-864371--12463426

## 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-1VF-A400 is a professional 3-phase monitoring relay designed for industrial and electrical control systems. It operates at a nominal voltage of 3(N)400/230V AC with a frequency of 50/60Hz. This device provides reliable monitoring of phase parameters to ensure the safety and stability of electrical installations, protecting equipment from potential faults in three-phase power networks.

## Long description

The Relpol RPN-1VF-A400 is a professional 3-phase monitoring relay engineered for precise control and protection within industrial and electrical power systems. Designed to operate at a nominal voltage of 3(N)400/230V AC with a frequency of 50/60Hz, this device serves as a critical component for maintaining the integrity of three-phase networks. By continuously monitoring phase parameters, it helps prevent equipment damage caused by voltage irregularities, ensuring consistent operational safety and system stability.
Advantages
This monitoring relay offers high reliability and accuracy in detecting phase faults, which is essential for protecting sensitive electrical machinery. Its robust construction is tailored for demanding industrial environments, providing long-term performance and minimal maintenance requirements. The device simplifies the integration process into existing control panels, offering a compact solution that effectively manages power quality and prevents costly downtime in complex electrical installations.
Suitable for
Industrial automation and control systems
Protection of three-phase motors and pumps
Electrical distribution boards and switchgear
Monitoring power supply stability in commercial facilities
This relay is not suitable for single-phase power systems or applications requiring DC voltage monitoring. It should not be used in environments where the operating voltage or frequency deviates from the specified nominal values, as this may lead to incorrect operation or damage to the device.
Key specifications
Nominal voltage: 3(N)400/230V AC
Frequency: 50/60Hz
Function: 3-phase monitoring
Application: Industrial electrical control systems
The device should be installed by a qualified professional in accordance with local electrical regulations. It is typically mounted on a standard DIN rail within a control cabinet. Ensure that all wiring connections are secure and that the phase sequence and voltage levels match the device requirements before applying power to the system.
What to consider before purchase
Verify that your network voltage matches the 3(N)400/230V AC specification.
Ensure the device is compatible with your existing DIN rail mounting setup.
Confirm that the frequency of your power supply is 50/60Hz.
Usage recommendations: Regularly inspect the relay for signs of wear or loose connections during routine maintenance of your electrical panel to ensure continued protection of your equipment.

## FAQ

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

The price is 31.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 45 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

https://aio.lv/img/cache/product/12463426/68765167_large.webp