# Dehn DEHNventil M TNC 255 FM Surge Arrester Type 1+2 3P 25/75kA 1.5kV

**URL:** https://aio.lv/en/product--dehn-951305--12462561
**Data updated:** 2026-05-18 09:43 (EEST)
**Category:** Power Extension Cords & Surge Protectors
**Manufacturer:** Dehn
**Manufacturer code:** 951305
**EAN:** 4013364108141
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 635.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 525.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dehn-951305--12462561

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The Dehn DEHNventil M TNC 255 FM is a combined lightning current and surge arrester of Type 1+2. Designed for 3-pole TNC systems, it provides a discharge capacity of 25/75kA and a protection level of 1.5kV. Featuring integrated remote signaling contacts, this device ensures reliable protection for electrical installations against atmospheric discharges and switching surges in industrial and residential power grids.

## Long description

The Dehn DEHNventil M TNC 255 FM is a high-performance combined lightning current and surge arrester designed for Type 1+2 protection in 3-pole TNC electrical systems. This robust device is engineered to safeguard sensitive electrical installations by effectively managing high-energy atmospheric discharges and transient switching surges. With its integrated remote signaling contact, it allows for proactive monitoring of the device's operational status, ensuring continuous protection for industrial and residential power grids.
Advantages
This surge arrester offers exceptional reliability through its coordinated spark-gap technology, which ensures high discharge capacity while maintaining a low voltage protection level. The modular design simplifies maintenance and replacement procedures without requiring a complete system shutdown. Its ability to handle both lightning currents and switching surges in a single compact unit makes it an efficient solution for comprehensive surge protection, reducing the risk of damage to connected equipment and improving overall system longevity.
Suitable for
Industrial power distribution boards
Residential main distribution panels
TNC electrical network configurations
Protection against direct and indirect lightning strikes
This device is not suitable for use in electrical systems other than 3-pole TNC configurations, such as TT or IT systems, where different wiring topologies are required. It is also not intended for installation in environments with extreme moisture or corrosive atmospheres unless housed in an appropriately rated protective enclosure.
Key specifications
Type: 1+2 combined lightning current and surge arrester
System compatibility: 3-pole TNC
Discharge capacity: 25/75kA
Voltage protection level: 1.5kV
Remote signaling: Integrated FM contact
Installation should be performed by a qualified electrician in accordance with local safety regulations. The device is typically mounted on a standard DIN rail within the main distribution board. Ensure that the connection cables are kept as short as possible to maintain the effectiveness of the surge protection. The remote signaling contact can be wired to a monitoring system to provide real-time alerts regarding the status of the arrester modules.
What to consider before purchase
Verify that your electrical system is a 3-pole TNC configuration
Ensure sufficient space is available on the DIN rail within the distribution board
Check that the voltage protection level meets the requirements of your sensitive equipment
Regularly inspect the status indicator on the device to ensure the protection modules are functioning correctly. If the indicator shows a fault, replace the affected module immediately to maintain system safety.

## FAQ

### How much does the Dehn DEHNventil M TNC 255 FM Surge Arrester cost, and is it available for purchase?

The price is 635.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 08.07.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Dehn DEHNventil M TNC 255 FM 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/12462561/68764369_large.webp