# Dehn DEHNBLOC M 1 255 1-Pole Surge Arrester for 230V AC Networks

**URL:** https://aio.lv/en/product--dehn-961120--12449902
**Data updated:** 2026-05-18 02:45 (EEST)
**Category:** Power Extension Cords & Surge Protectors
**Manufacturer:** Dehn
**Manufacturer code:** 961120
**EAN:** 4013364118614
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 226.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 187.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dehn-961120--12449902

## 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 DEHNBLOC M 1 255 is a high-performance 1-pole surge arrester designed for 230V AC power distribution systems. This modular device provides reliable protection against lightning currents and transient overvoltages. It is suitable for installation in main distribution boards to safeguard electrical equipment from damage, ensuring operational safety and longevity in industrial and residential electrical installations.

## Long description

The Dehn DEHNBLOC M 1 255 is a high-performance 1-pole surge arrester engineered specifically for 230V AC power distribution networks. This modular device serves as a critical component in electrical safety, designed to intercept and divert lightning currents and transient overvoltages before they can reach sensitive equipment. By integrating this arrester into your main distribution board, you create a robust defense mechanism that protects your electrical infrastructure from sudden voltage spikes, thereby enhancing the operational reliability and lifespan of connected devices in both residential and industrial environments.
Advantages
The primary strength of the Dehn DEHNBLOC M 1 255 lies in its modular design, which allows for easy maintenance and replacement of individual protection modules without requiring a complete system overhaul. Its high discharge capacity ensures that it can handle significant energy surges, providing a reliable barrier against atmospheric discharges. Furthermore, the device is built to meet stringent safety standards, offering consistent performance and durability even under demanding electrical conditions. Its compact footprint makes it an ideal choice for installations where space in the distribution board is limited, while its efficient design minimizes energy loss during normal operation.
Suitable for
Main distribution boards in residential buildings
Industrial power distribution systems
Protection of sensitive electronic equipment against lightning strikes
230V AC single-phase electrical networks
When it may not be suitable
This surge arrester is not intended for use in DC power systems or high-voltage transmission lines exceeding its rated operational voltage. It should not be used as a standalone protection device in environments where secondary or fine protection is required for highly sensitive microelectronics, as it is primarily designed for coarse surge protection at the main entry point.
Key specifications
Rated voltage: 230V AC
Number of poles: 1
Modular design for easy maintenance
High lightning current discharge capacity
Suitable for main distribution board mounting
How to use
The installation of the Dehn DEHNBLOC M 1 255 must be performed by a qualified electrician in accordance with local electrical safety regulations. The device is designed for mounting on a standard DIN rail within the main distribution board. Ensure that the connection cables are kept as short as possible to maintain optimal protection levels. The arrester should be connected in parallel with the supply circuit, ensuring that the grounding terminal is securely connected to the main earthing busbar to facilitate the effective diversion of surge currents.
What to consider before purchase
Verify that your electrical network voltage matches the 230V AC rating
Ensure there is sufficient space on the DIN rail in your distribution board
Confirm that the device is compatible with your existing lightning protection system
Consult a professional to determine if additional fine protection is needed for your specific equipment
Usage recommendations: Regularly inspect the status indicator on the module to ensure the device is functioning correctly. If the indicator shows that the protection module has reached its end of life, replace the module immediately to maintain continuous protection for your electrical system.

## FAQ

### How much does the Dehn DEHNBLOC M 1 255 1-Pole Surge Arrester cost, and is it available for purchase?

The price is 226.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 12 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 DEHNBLOC M 1 255 1-Pole 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/12449902/68752696_large.webp