# Dehn DG M TNS ACI 275 FM Type 2 Surge Arrester, 4-Pole, 20kA, 1.5kV for TNS Networks

**URL:** https://aio.lv/en/product--dehn-952440--12448291
**Data updated:** 2026-05-18 02:46 (EEST)
**Category:** Power Extension Cords & Surge Protectors
**Manufacturer:** Dehn
**Manufacturer code:** 952440
**EAN:** 4013364376625
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 296.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 245.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dehn-952440--12448291

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

The Dehn DG M TNS ACI 275 FM is a modular Type 2 surge arrester designed for TNS electrical networks. Featuring a 4-pole configuration, it provides a nominal discharge current of 20kA and a voltage protection level of 1.5kV. This device includes remote signaling contacts for monitoring and is engineered to protect sensitive electrical equipment from transient overvoltages, ensuring reliable operation and safety in industrial and residential power systems.

## Long description

The Dehn DG M TNS ACI 275 FM is a high-performance modular Type 2 surge arrester specifically engineered for TNS electrical networks. This 4-pole device is designed to safeguard sensitive electrical installations by effectively limiting transient overvoltages caused by atmospheric discharges or switching operations. With its integrated remote signaling contacts, the arrester allows for continuous monitoring of its operational status, ensuring that maintenance can be performed proactively to maintain system integrity.
Advantages
This surge arrester utilizes advanced ACI technology, which combines a spark gap with a series-connected varistor to ensure high reliability and safety. The modular design allows for easy replacement of individual protection modules without the need to disconnect the entire system, significantly reducing downtime during maintenance. Its robust construction and precise voltage protection level make it an essential component for maintaining the longevity of connected electronic devices in both residential and industrial environments.
Suitable for
TNS electrical power distribution networks
Protection of sensitive electronic equipment in industrial facilities
Residential electrical systems requiring surge protection
Commercial buildings with complex power distribution
When it may not be suitable
This device is specifically designed for TNS network configurations and should not be used in systems with different earthing arrangements, such as TT or IT networks, without appropriate modifications or alternative models. It is also not intended for use as a primary lightning protection device in areas with high direct lightning strike risks, where Type 1 arresters are required.
Key specifications
Type: 2 (Class II)
Configuration: 4-Pole
Nominal discharge current: 20kA
Voltage protection level: 1.5kV
Network type: TNS
Features: Remote signaling contacts
How to use
The device is designed for installation on a standard DIN rail within a distribution board. It should be installed by a qualified electrician in accordance with local electrical safety regulations. The remote signaling contacts can be wired to a building management system or an alarm indicator to provide real-time status updates. Ensure that the connection cables are kept as short as possible to maintain the effectiveness of the surge protection.
What to consider before purchase
Verify that your electrical network is a TNS system
Check the available space on the DIN rail in your distribution board
Ensure the voltage protection level meets the requirements of your connected equipment
Confirm if remote monitoring integration is required for your installation
Usage recommendations
Regularly inspect the visual status indicator on the front of the modules. If the indicator changes from green to red, the module has reached its end of life and must be replaced immediately to ensure continued protection.

## FAQ

### How much does the Dehn DG M TNS ACI 275 FM Type 2 Surge Arrester cost, and is it available for purchase?

The price is 296.49 € (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 13.07.2026 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 Dehn DG M TNS ACI 275 FM Type 2 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 Dehn 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 Dehn 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/12448291/68751285_large.webp