# Relpol MR-EU31UW1P Phase Sequence and Loss Monitoring Relay 1P

**URL:** https://aio.lv/en/product--relpol-2613069--12445696
**Data updated:** 2026-05-18 02:54 (EEST)
**Category:** Control Systems
**Manufacturer:** Relpol
**Manufacturer code:** 2613069
**EAN:** 5900005014246
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 139.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 115.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-2613069--12445696

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The Relpol MR-EU31UW1P is a single-pole monitoring relay designed for industrial electrical systems. It provides reliable protection by detecting phase sequence errors and phase loss, ensuring the safety and operational integrity of connected equipment. This device is essential for preventing damage in three-phase installations, offering precise monitoring and quick response times for automated control systems.

## Long description

The Relpol MR-EU31UW1P is a precision-engineered monitoring relay designed to safeguard industrial electrical systems by continuously tracking phase sequence and phase loss. This single-pole device acts as a critical protective component in three-phase installations, ensuring that equipment operates within safe parameters and preventing potential damage caused by incorrect phase order or the loss of a phase. By integrating this relay into your control system, you maintain operational integrity and minimize the risk of costly downtime or hardware failure.
Advantages
This monitoring relay offers high reliability and rapid response times, which are essential for maintaining the stability of automated control systems. Its robust design is tailored for demanding industrial environments, providing consistent performance and accurate detection of electrical anomalies. The device simplifies system maintenance by offering clear monitoring capabilities, allowing for immediate identification of phase-related issues before they escalate into significant equipment faults.
Suitable for
Three-phase industrial motor protection
Automated control panels and switchgear
HVAC system monitoring
Industrial machinery and production lines
This device may not be suitable for single-phase electrical installations or systems where the voltage levels fall outside the specified operating range of the relay. It is also not intended for use in environments with extreme moisture or corrosive gases that could compromise the internal electronic components.
Key specifications
Function: Phase sequence and phase loss monitoring
Configuration: Single-pole output
Application: Three-phase electrical systems
Design: Industrial-grade monitoring relay
To use the Relpol MR-EU31UW1P, mount the device onto a standard DIN rail within your electrical cabinet. Connect the three-phase supply lines to the designated input terminals according to the wiring diagram provided with the unit. Once the connections are secure, the relay will automatically begin monitoring the phase sequence and presence. If an error is detected, the relay will trigger its output to disconnect or signal the control system, depending on your specific installation configuration.
What to consider before purchase
Verify that your system voltage matches the relay specifications
Ensure compatibility with your existing control circuit voltage
Confirm that the installation environment meets the required temperature and humidity standards
For optimal performance, ensure that all electrical connections are tightened to the manufacturer's torque specifications and that the device is protected from excessive vibration or heat sources within the control cabinet.

## FAQ

### How much does the Relpol MR-EU31UW1P Phase Monitoring Relay cost, and is it available for purchase?

The price is 139.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 02.07.2026 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 Relpol MR-EU31UW1P Phase Monitoring Relay 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 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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