# Eti-Polam ETITEC SM T12 300/25 4+0 Combined Surge Arrester Type T1+T2, Iimp=25kA, TN-S

**URL:** https://aio.lv/en/product--eti-polam-002440572--12468125
**Data updated:** 2026-05-18 09:35 (EEST)
**Category:** Power Sockets
**Manufacturer:** Eti-Polam
**Manufacturer code:** 002440572
**EAN:** 3838895847557
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 462.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 382.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eti-polam-002440572--12468125

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Eti-Polam ETITEC SM T12 300/25 4+0 is a combined Type T1+T2 surge arrester designed for TN-S power systems. Featuring a hybrid varistor and spark gap technology, it provides high-capacity protection against lightning currents and switching surges. With an impulse current (Iimp) of 25kA, this device ensures reliable safety for electrical installations, effectively limiting transient overvoltages to protect sensitive equipment from damage.

## Long description

The Eti-Polam ETITEC SM T12 300/25 4+0 is a high-performance combined surge arrester designed to provide comprehensive protection for TN-S electrical power systems. By integrating advanced hybrid varistor and spark gap technology, this device effectively manages both high-energy lightning currents and transient switching surges. It serves as a critical component in safeguarding electrical installations and sensitive electronic equipment from the damaging effects of overvoltages.
Advantages
This surge arrester offers a robust defense mechanism by combining the rapid response of varistors with the high discharge capacity of spark gaps. Its design ensures a high level of reliability in demanding environments, effectively limiting voltage spikes to safe levels. The 4+0 configuration is specifically optimized for TN-S networks, providing a streamlined and efficient installation process while maintaining high operational safety standards.
Suitable for
TN-S electrical power distribution systems
Industrial facilities requiring lightning protection
Commercial buildings with sensitive electronic infrastructure
Main distribution boards in residential or office complexes
When it may not be suitable
This device is specifically engineered for TN-S systems and will not function correctly in TN-C, TT, or IT earthing arrangements without appropriate modifications or additional components. It is also not intended for use in circuits where the operating voltage significantly exceeds the specified maximum continuous operating voltage of 300V.
Key specifications
Type: T1+T2 (Class I+II) combined surge arrester
Network system: TN-S
Configuration: 4+0
Impulse current (Iimp): 25kA
Maximum continuous operating voltage: 300V
Technology: Hybrid varistor and spark gap
How to use
The device should be installed by a qualified electrician in the main distribution board at the point of entry for the electrical supply. It must be mounted on a standard DIN rail. Ensure that the connection cables are kept as short as possible to minimize inductive voltage drops during a surge event. Proper grounding must be verified to ensure the device can effectively divert excess energy to the earth.
What to consider before purchase
Verify that your electrical network is a TN-S system
Check the maximum continuous operating voltage of your installation
Ensure there is sufficient space on the DIN rail within your distribution board
Confirm that the impulse current rating meets the requirements of your local lightning protection zone
Usage recommendations
Regularly inspect the status indicators on the device to ensure it remains operational. If the indicator shows a fault, the surge arrester module must be replaced immediately to maintain the protection of your electrical system.

## FAQ

### How much does the Eti-Polam ETITEC SM T12 300/25 4+0 Surge Arrester cost, and is it available for purchase?

The price is 462.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 7 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 16.07.2026 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 ETITEC SM T12 300/25 4+0 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

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