# Eti-Polam ML T123 300/12,5 4+0 RC Surge Arrester Type T1+T2+T3 for TN-S Systems

**URL:** https://aio.lv/en/product--eti-polam-002440668--12468119
**Data updated:** 2026-05-18 09:35 (EEST)
**Category:** Power Sockets
**Manufacturer:** Eti-Polam
**Manufacturer code:** 002440668
**EAN:** 3838895927181
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 164.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 136.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eti-polam-002440668--12468119

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

The Eti-Polam ML T123 300/12,5 4+0 RC is a universal surge arrester combining protection classes T1, T2, and T3 (B+C+D). Designed for TN-S electrical networks, this device provides comprehensive protection against lightning and switching surges. It features a 4+0 configuration and includes a remote signaling contact (RC) for monitoring status. Ideal for safeguarding sensitive electronic equipment in residential and industrial power distribution systems.

## Long description

The Eti-Polam ML T123 300/12,5 4+0 RC is a high-performance surge arrester engineered to provide comprehensive protection for electrical installations. By combining protection classes T1, T2, and T3, this device effectively guards against both direct lightning strikes and transient switching surges. It is specifically designed for use in TN-S electrical networks, ensuring that sensitive electronic components and power distribution systems remain safe from voltage spikes.
Advantages
This surge arrester offers a versatile solution by integrating multiple protection levels into a single unit, which simplifies installation and reduces the need for additional components. The 4+0 configuration ensures balanced protection across all phases and the neutral conductor. Furthermore, the inclusion of a remote signaling contact allows for real-time monitoring of the device status, providing immediate notification if maintenance or replacement is required, thereby enhancing the reliability of the entire electrical system.
Suitable for
Residential electrical distribution boards
Industrial power supply systems
Protection of sensitive electronic equipment
TN-S network configurations
When it may not be suitable
This device is specifically designed for TN-S systems and may not be compatible with other earthing arrangements such as TN-C or IT systems without appropriate modifications or additional equipment. It is not intended for use in high-voltage transmission lines or environments where the operating voltage exceeds the specified technical limits.
Key specifications
Protection classes: T1, T2, T3 (B+C+D)
Network type: TN-S
Configuration: 4+0
Remote signaling contact: Included
Application: Lightning and surge protection
How to use
The surge arrester should be installed by a qualified electrician within the main distribution board. It is typically mounted on a standard DIN rail at the point of entry for the electrical supply. Ensure that the connections are secure and that the grounding conductor is properly sized and connected to the main earthing terminal to allow for effective surge dissipation. The remote signaling contact should be wired to a monitoring system if status tracking is required.
What to consider before purchase
Verify that your electrical network is a TN-S system
Ensure there is sufficient space in the distribution board for the unit
Confirm that the voltage ratings match your local power supply
Check if remote monitoring integration is necessary for your setup
Usage recommendations
Regularly inspect the status indicator on the device to ensure it is functioning correctly. If the indicator shows that the protection module has reached the end of its service life, replace the unit immediately to maintain the safety of your electrical installation.

## FAQ

### How much does the Eti-Polam ML T123 300/12,5 4+0 RC Surge Arrester cost, and is it available for purchase?

The price is 164.99 € (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 17.07.2026 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 Eti-Polam ML T123 300/12,5 4+0 RC Surge Arrester 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 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/12468119/68770657_large.webp