CITEL Newsletter March 2024

Ladies and Gentlemen,

In the first of our four quarterly newsletters, we present our new products and give you an overview of our planned webinars in 2024.

Best regards from Bochum,

your CITEL team

CITEL auf der Light+Building 2024



From March 3 to 8, we had the opportunity to meet you again in person at Light+Building.

We would like to thank you for visiting us in large numbers at our stand!






New compact combined SPD for the AC range: DACN1-25CVGS

The new DACN1-25CVGS series is a range of compact and powerful 1+2+3 type combined SPDs. The series includes a "1+1" and "3+1" configuration and offers a number of advantages over the DUT250s and DS250s product series..

Housing design of the new generation The housing has the current CITEL design and is slimmer than the DS250-SPDs. In addition, the multipole/3+1 version is housed in a monoblock housing so that the comb rail connection is no longer required.

Remote signaling: The new DACN1-25CVGS are equipped with remote signaling. This is not available on the DUT250 models. This is even easier to install, especially in the multi-pole version: there is only one signal output instead of one output per pole.

Dual disconnection: The DACN125CVGS SPDs are equipped with a double disconnection mechanism. In addition to the thermal separation, the DACN1 contain a physical separation - the "Arc Cutter". This is a special plastic disc that moves between the poles at the moment it is triggered, thus separating and insulating them from each other.

VG-Technology: All DACN1-25CVGS are equipped as standard with our proven VG technology and its advantages:

  • No passive aging due to the combination of varistor and gas-filled spark gaps (GSG)
  • Optimum protection level and high surge current capacity
  • Use of gas-filled spark gaps (GSG) instead of air-filled spark gaps
  • No mains follow current
  • Increased TOV strength
  • 10 year guarantee

Leakage- and operating current-free: The devices in the DACN1-25CVGS-31-275 and DACN1-25CVGS-11-275 versions are leakage- and operating current-free, so they can also be used in the pre-meter area.




DPVN – slimmer, faster and safer SPDs for PV protection

With the DPVN series SPDs, CITEL introduces the new generation of protection devices on the DC side of photovoltaic installations. This series is the first to be equipped with cutting-edge CTC technology and includes Type 1+2 combined SPDs and Type 2 SPDs.

The DPVN SPDs are suitable for all applications, from rooftop systems of any size to ground-mounted systems, and can be installed on the DC side. Thanks to our new CTC technology, they are slimmer, faster and safer than their predecessors from the DS50 product series and comparable devices on the market. DPVN series SPDs implement the normative requirements of IEC 61643-31 better than was previously possible (IEC 61643-31 focuses on the specifications of surge protection devices for photovoltaic applications).

The DPVN product range currently includes six different devices in different voltage classes, each of which is optionally available with the proven VG technology (combination of varistors and gas-filled spark gaps) and a 10-year guarantee.

Further information about the DPVN series can be found here:
DPVN series, CITEL surge protection




CTC – disconnection device rethought

Our Central Thermal Control (CTC) is an absolutely innovative and patented separation technology. It consists of a separating device positioned centrally between the varistors, which is linked to several safety features:

The disconnection device is thermosensitive and, due to its positioning, reacts more quickly to the heating of the varistors that occurs during a discharge process. In the event of a trip, the CTC technology carries out all-pole isolation - not just through spatial separation of the poles, but also through an insulating barrier.

The even more responsive and secure CTC technology offers you three features for more security:

  • Faster response
  • All-pole separation
  • Additional insulation of the separated poles

In addition, CTC technology enables a more compact design of the arresters.

The even more responsive and secure CTC technology offers you three features for more security:

  • Faster response
  • All-pole separation
  • Additional insulation of the separated poles

In addition, CTC technology enables a more compact design of the arresters.

Further information about CTC technology can be found here:
CITEL "CTC-Technology"




XS generator junction boxes – significantly more compact protection for PV systems

With the generator junction boxes (GAK) in the new XS-format not only do our well-known GAK models benefit from these optimizations, the particularly installation-friendly CiPlug boxes are now also available in a slimmer and narrower version.

In all XS boxes we use our new DPVN arresters with the latest isolation technology in order to be able to offer an even higher level of protection. With a total of 36 different configurations, a suitable connection box is available for every installation size. ­ ­ Further information about the new XS boxes can be found here: Generator junction box - photovoltaics, CITEL




Our webinars 2024

The positive feedback and great response to our previous online seminars has motivated us to continue this series in 2024. Using different focal points, we present the topic of surge protection to you in a comprehensive, up-to-date and competent manner.

Our webinars always take place on a Thursday at 10 a.m. The lecture lasts approximately 60 minutes. Here are the dates and priorities for 2024:

21.03.: High-Performance SPDs:

  • A look at the new generation of lightning current SPDs recently launched on the market. An innovative feature takes the topic of “Surge Protection Device” to a new level. Be inspired by this new SPD solution
  • We go into the selection and setup of different types of lightning current SPDs
  • Compact & Smart: Installation, analysis & maintenance — the new future-oriented SPD generation DACN1 … SC

Registration: High-Performance SPD Compact & Smart | CITEL (livestorm.co)

June 6th: Focus on photovoltaics/outlook on SolarSolutions September 19th: Focus on e-mobility December 12th: Focus on energy storage systems (ESS)

You can find the link to register for our current seminar here: [You can find the link to register for our current seminar here:](You can find the link to register for our current seminar here:) and in our email invitations.