# Novatek-Electro RNPP-311.1 Phase Sequence, Loss and Asymmetry Monitoring Relay 400V

**URL:** https://aio.lv/en/product--novatek-electro-rnpp-3111--12453663
**Data updated:** 2026-05-18 02:44 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Novatek-Electro
**Manufacturer code:** RNPP-311.1
**EAN:** 4820122950436
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 32.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--novatek-electro-rnpp-3111--12453663

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The Novatek-Electro RNPP-311.1 is a multifunctional phase monitoring relay designed for 400V electrical systems. It provides reliable protection by detecting phase sequence, phase loss, and voltage asymmetry. This device is essential for industrial and commercial power monitoring, ensuring equipment safety by disconnecting the load when supply parameters deviate from the set limits.

## Long description

The Novatek-Electro RNPP-311.1 is a high-precision multifunctional phase monitoring relay engineered for 400V three-phase electrical systems. This device serves as a critical safety component in industrial and commercial power distribution networks, continuously monitoring the quality of the incoming power supply. By detecting critical faults such as phase sequence errors, phase loss, and voltage asymmetry, the relay ensures that connected equipment is protected from damage caused by unstable power conditions. When the monitored parameters deviate from the pre-set safety limits, the device triggers an automatic disconnection of the load, preventing potential electrical failures.
Advantages
The primary benefit of the RNPP-311.1 is its ability to provide comprehensive protection against the most common three-phase power supply issues. Its robust design ensures reliable operation in demanding environments, offering a high level of accuracy in voltage monitoring. By integrating this relay into your electrical panel, you significantly reduce the risk of motor burnout, equipment malfunction, and costly downtime. The device is designed for ease of installation and provides clear, immediate feedback on the status of the power supply, making it an indispensable tool for maintaining the longevity and efficiency of sensitive electrical machinery.
Suitable for
Industrial motor protection systems
Commercial HVAC and refrigeration equipment
Three-phase power distribution panels
Automated manufacturing machinery
Backup power and generator monitoring
When it may not be suitable
This device is specifically designed for 400V three-phase systems and is not compatible with single-phase electrical installations. It should not be used in environments where the supply voltage significantly exceeds or falls below the specified operating range of the relay.
Key specifications
Rated voltage: 400V AC
Monitored parameters: Phase sequence, phase loss, and voltage asymmetry
Application: Three-phase electrical networks
Function: Load disconnection upon parameter deviation
How to use
The relay should be installed by a qualified electrician within a standard electrical distribution board. Connect the three-phase supply lines to the designated input terminals of the device. Once powered, the relay will automatically begin monitoring the incoming voltage. If the phase sequence is correct and the voltage levels are within the acceptable range, the internal relay contacts will close, allowing power to reach the load. If a fault is detected, the relay will open the circuit to protect the connected equipment.
What to consider before purchase
Verify that your electrical system operates at the required 400V three-phase standard.
Ensure the relay is installed in a location protected from excessive moisture and dust.
Check that the current rating of the load is compatible with the relay output specifications.
Usage recommendations: Regularly inspect the relay status indicators to ensure the power supply remains stable and perform periodic testing of the protection functions to guarantee continued operational safety.

## FAQ

### How much does the Novatek-Electro RNPP-311.1 Phase Monitoring Relay cost, and is it available for purchase?

The price is 38.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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 07.07.2026 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 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

https://aio.lv/img/cache/product/12453663/68756189_large.webp