# Phase sequence and asymmetry loss relay ETI-Polam PZAK-1 1Z 8A (MPN 002471409)

**URL:** https://aio.lv/en/product--eti-polam-002471409--12115839
**Data updated:** 2026-03-20 10:08 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** Eti-Polam
**Manufacturer code:** 002471409
**EAN:** 5904722934634
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 64.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 53.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eti-polam-002471409--12115839

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

ETI-Polam PZAK-1 is a phase sequence and phase asymmetry loss relay designed to monitor three-phase supply. It features a single changeover contact (1Z) rated for 8 A and protects equipment from phase reversal, missing phase and significant phase imbalance. Suitable for industrial and commercial electrical panels to prevent motor and drive damage and ensure correct phase rotation.

## Long description

ETI-Polam PZAK-1 phase sequence and asymmetry loss relay is a compact monitoring device for three-phase electrical supplies. It detects phase reversal, phase loss and significant phase imbalance, and provides a single changeover contact rated for 8 A to interrupt control circuits or signal alarms. The relay is intended for installation in industrial and commercial distribution panels to protect motors, drives and other three-phase equipment from incorrect rotation and supply problems.
Advantages
The relay offers reliable detection of wrong phase sequence, missing phase and asymmetry with a compact form factor suitable for DIN-rail mounting. Its single changeover contact simplifies wiring to contactors, alarm circuits or PLC inputs, while the 8 A contact rating covers common control and signaling loads. Low installation footprint and clear functional behaviour make it straightforward to integrate into existing electrical panels.
Suitable for
Protection of three-phase motors and motor starters
Monitoring of drives and pumps in industrial installations
Control and alarm signalling in commercial electrical panels
Verification of correct phase rotation during commissioning
Key specifications
Function: phase sequence monitoring and phase asymmetry (phase loss) detection
Contact type: single changeover (SPDT)
Contact rated current: 8 A
Supply system: three-phase input monitoring
Mounting: panel / DIN-rail compatible compact housing
How to use
Install the relay in the distribution or control panel in accordance with local electrical codes. Connect the three phase conductors to the device terminals for continuous monitoring of phase sequence and asymmetry. Wire the single changeover contact into the control circuit of the contactor, alarm lamp or PLC input so that the contact changes state when an incorrect phase sequence, phase loss or excessive imbalance is detected. Verify correct wiring and perform a functional test during commissioning to confirm correct response to phase reversal and phase loss conditions.
Usage recommendations
Use the relay as part of a layered protection scheme: combine it with appropriate overcurrent, thermal and motor protection devices. Ensure regular inspection of connections and periodic functional testing after installation to maintain reliable protection of motors and three-phase equipment.

## FAQ

### How much does the ETI-Polam PZAK-1 phase loss/asymmetry relay 1Z 8A cost, and is it available for purchase?

The price is 64.49 € (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 20.07.2026 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 Eti-Polam 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 Eti-Polam 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/12115839/67650998_large.webp