Page 26 - Surge-Protection-E_0.pdf

Combined Arresters – Type 1 + Type 2

DEHNventil modular
• Prewired spark-gap-based type 1 and type 2 combined light-
ning current and surge arrester consisting of a base part and
plug-in protection modules
• Maximum system availability due to RADAX Flow follow
current limitation
• No tripping of 20 A gG fuses up to short-circuit currents
of 50 kArms
Combined Arresters – Type 1 + Type 2 • Capable of protecting terminal equipment
• Discharge capacity up to 100 kA (10/350 µs)
• Operating state / fault indication by green / red indicator
flag in the inspection window
• Easy replacement of protection modules without tools due
to module locking system with module release button
For protecting low-voltage consumer's installations against surges and even direct
lightning strikes. For installation in conformity with the lightning protection zone
concept at the boundaries from 0A – 2. • Vibration and shock-tested according to EN 60068-2

DEHNventil M TNC 255: Modular combined lightning current and surge arrester for use in TN-C systems
DEHNventil M TNS 255: Modular combined lightning current and surge arrester for use in TN-S systems
DEHNventil M TT 255: Modular combined lightning current and surge arrester for use in TT and TN-S systems (3+1 configuration)
DEHNventil M TN 255: Modular combined lightning current and surge arrester for use in single-phase TN systems
DEHNventil M TT 2P 255: Modular combined lightning current and surge arrester for use in single-phase TT and TN systems (1+1 configuration)
DEHNventil M ... FM: With remote signalling contact for monitoring device (floating changeover contact)

With their functional Red/Line design, the devices of the modular The patented RADAX Flow technology for follow current limitation and
DEHNventil family provide a combination of safety and innovation. extinction allows high availability of the electrical consumer installation
Designed for “all-in-one installation”, the arresters integrate lightning to be protected. Even in case of short-circuit currents as high as 100 kArms,
equipotential bonding and surge protection in a single device, making mains follow currents are reduced in such a way that selectivity with re-
them ideal for use in compact electrical installations. The energy-coordi- spect to low-current-rated fuses is ensured. This means that upstream
nated arresters even allow you to protect terminal equipment if the dis- fuses will not trip due to upcoming mains follow currents.
tance between DEHNventil and the consumers is ≤ 10 m. With a lightning The operating state / fault indicator of each protective path does not cause
current discharge capacity up to 100,000 A, the arresters ensure a high operating currents and instantly shows the operating state of the surge
degree of availability of the electrical installation to be protected. Even in arrester. Apart from the standard visual indicator with green and red indi-
large-scale electrical installations, the modular DEHNventil arresters pro- cator flags, DEHNventil M ... FM devices feature a three-pole remote sig-
vide various application benefits. The Red/Line surge arresters installed at nalling terminal. As the remote signalling contact is designed as a floating
the boundaries of the individual lightning protection zones, for example, changeover contact, the remote sig-
are already energy-coordinated with the DEHNventil arresters. nal can, depending on the circuit
Encapsulated creepage discharge spark gaps and the small space require- concept, be used as a make or break
ments enable easy integration into switchgear installations or distribution contact.
boards. A special feature of the modular DEHNventil family is its function- Due to their parameters and design,
al design, in particular the module locking system. It fixes the protection the devices can even be installed
module firmly in place so that it is safely connected to the base part even upstream of meter panels in low-
with maximum loads. If a protection module has to be replaced, it can be voltage consumer installations.
easily released and removed without tools by pressing the release button. Due to their parameters and design,
By using the double terminals suitable for all conductors, the arresters can the devices can even be installed
be connected in series in a space-saving and cost-effective way up to upstream of meter panels in low-
nominal currents of 125 A as preferred by IEC 60364-5-53. Busbars of type voltage consumer installations.
MVS 3 8 6 and MVS 4 11 8 can be used for connecting further DIN rail
mounted devices. Selection of the DEHNventil devices is very straightfor-
ward based on the network form of the existing low-voltage consumer
installation in conjunction with the device type designation.

22 You will find detailed product information on our website Valid as of August 1, 2020