# DEHN DSH ZP B TT 255 Combined Lightning Current and Surge Arrester Type 1+2 230 - 400 V Terminal Red Thermoplastic

**URL:** https://aio.lv/en/product--dehn-soehne-900396--12591644
**Data updated:** 2026-07-27 18:21 (EEST)
**Category:** Other goods
**Manufacturer:** dehn + soehne
**Manufacturer code:** 900396
**EAN:** 4013364306783
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 210.49 €
**Prices and availability valid until:** 2026-08-27 23:59
**Price without VAT (21%):** 173.96 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dehn-soehne-900396--12591644

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 11.08.2026 | free |
| Pickup points | 14.08.2026 | 1.79 EUR |
| Courier delivery to door | 14.08.2026 | 4.99 EUR |

## Summary description

DEHN DSH ZP B TT 255 combined lightning current and surge arrester of type 1+2, designed for TT and TN-S systems with a nominal input voltage of 230 to 400 V and a frequency of 50 to 60 Hz. Featuring terminal connections, this safety device is housed in a durable red thermoplastic enclosure and is certified with CE and VDE standards. It is engineered to protect electrical installations from severe transient overvoltages and direct lightning strikes.

## Long description

The DEHN DSH ZP B TT 255 is a combined lightning current and surge arrester of type 1+2, engineered specifically for TT and TN-S electrical systems. Designed to operate with a nominal input voltage of 230 to 400 V and a frequency of 50 to 60 Hz, this safety device effectively protects residential electrical installations right at their origin from severe transient overvoltages and direct lightning strikes. Housed in a durable red thermoplastic enclosure and utilizing reliable terminal connections, it combines advanced spark gap technology with energy-coordinated protection to ensure maximum system availability.
Advantages
This combined arrester offers comprehensive protection for the entire electrical installation, including sensitive terminal equipment located within a ten-meter distance, by utilizing an energy-coordinated protection effect covering type 1, type 2, and type 3 requirements. Installation is fast and straightforward due to the snap-on design for standard 40 mm busbar systems. The unit complies fully with national VDN guidelines for surge protective devices upstream of the meter panel and satisfies rigorous standards for lightning current discharge capacity. Additional operational benefits include an integrated button test with an indicator light and resistance to tripping 32 A gG fuses up to short-circuit currents of 25 kArms.
Suitable for
Residential buildings utilizing TT and TN-S power supply systems
Installations requiring surge protection upstream of the meter panel
Properties with power feed via overhead lines lacking external lightning protection
Protecting main electrical panels and connected terminal equipment simultaneously
When it may not be suitable
This device is not designed for electrical systems operating outside the 230 to 400 V voltage range or frequencies other than 50 to 60 Hz. It is also unsuitable for installation setups that do not utilize standard 40 mm busbar systems or where system configurations differ from TN-S and TT topologies.
Key specifications
Type 1+2 combined lightning current and surge arrester
Nominal input voltage of 230 to 400 V AC
Operating frequency of 50 to 60 Hz
Terminal connection type
Red thermoplastic housing material
Width of 53 mm and depth of 104 mm
Weight of 1.01 kg
CE and VDE certified
How to use
The device is installed directly into the primary power supply system by snapping the arrester onto standard 40 mm busbar systems. It should be positioned upstream of the meter panel in accordance with relevant electrical installation guidelines. Once securely mounted and wired to the system via the terminal connections, the operational status can be verified by pressing the test button to check the indicator light, ensuring the system is actively protected against surges.
What to consider before purchase
Verify that your electrical system type is either TT or TN-S
Check that the mains voltage matches the 230 to 400 V specification
Confirm the availability of a 40 mm busbar system for mounting
Ensure compliance with local electrical regulations and installation standards
Usage recommendations: Installation should be performed exclusively by a qualified electrician in compliance with applicable national electrical codes and safety standards. Regularly test the device using the integrated operational button to ensure ongoing protection functionality.

## Specifications

| Feature | Value |
|---|---|
| Weight | 1.01 kg |
| Certification | CE, VDE |
| Material | Thermoplastic |
| Operating temperature (T-T) | -40 - 80 |
| Height | 206 mm |
| LED indicators | Yes |
| Width | 53 mm |
| Depth | 104 mm |
| Nominal input voltage | 230 - 400 |
| Product colour | Red |
| Cordless | Yes |
| Number of products included | 1 pc(s) |
| Over current protection | Yes |
| AC outlet types | Terminal |
| AC input frequency | 50 - 60 |

## FAQ

### How much does the DEHN DSH ZP B TT 255 Surge Arrester by dehn + soehne cost, and is it available for purchase?

The price is 210.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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 11.08.2026 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 DSH ZP B TT 255 Surge Arrester by dehn + soehne 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 + soehne 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 + soehne 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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