Page 59 - Surge-Protection-E_0.pdf

Surge Arresters – Type 2
CIRCUIT INTERRUPTION
FUSE INTEGRATED
DEHNguard modular with Integrated Backup Fuse
• Arrester backup fuse integrated in the protection module
• Prewired complete unit consisting of a base part and plug-in
protection modules
• Energy coordination with other arresters of the Red/Line
product family
• High discharge capacity
• High reliability due to "Thermo Dynamic Control" SPD
monitoring device
• Easy replacement of protection modules without tools due
to module locking system with module release button

For protecting low-voltage consumer installations against surges. For installation
in conformity with the lightning protection zone concept at the boundaries from
0B – 1 and higher.

DEHNguard M TNC CI 275: Modular surge arrester with integrated backup fuse for TN-C systems
DEHNguard M TNS CI 275: With integrated backup fuse for TN-S systems
DEHNguard M TT CI 275: With integrated backup fuse for TT and TN-S systems (3+1 configuration)
DEHNguard M TN CI 275: With integrated backup fuse for 230 V TN systems
DEHNguard M TT 2P CI 275: With integrated backup fuse for 230 V TT and TN systems (1+1 configuration)
DEHNguard S CI 275: Modular single-pole surge arrester with integrated backup fuse
DEHNguard M ... CI 275 FM: With remote signalling contact for monitoring device (floating changeover contact)

The modular surge arresters of the DEHNguard ... CI family in the func- indicator flags which does not cause operating currents. It also indicates
tional Red/Line family design represents a perfect symbiosis of short-cir- the activation of the “Thermo Dynamic Control” monitoring device and
cuit protection and protection against surges in a protection module that the integrated arrester backup fuse.
is only one module wide. This sets new standards in terms of user-friend- In addition to this mechanical operating state / fault indication, the ... FM
liness with regard to surge protection and safe short-circuiting behaviour. version of the DEHNguard ... CI devices features a three-pole remote sig-
The protective circuit with the arrester backup fuse integrated in the pro- nalling terminal. As the remote signalling contact is designed as a floating
tection module and the heavy-duty zinc oxide varistor in combination with changeover contact, the remote signal can, depending on the circuit con-
the dual-action monitoring device “Thermo Dynamic Control” offers cept, be used as a make or break contact.
far-reaching advantages in terms of simple installation and minimum All the benefits of the modular design of the DEHNguard family have been
space requirements. integrated into the new DEHNguard ... CI family.
With the already integrated arrester backup fuse, the user no longer has The system-configuration-specific product designation and the “Thermo
to worry about arrester-specific dimensioning requirements such as back- Dynamic Control” monitoring device reflect the high safety requirements.
up protection in the event of a short-circuit and impulse current carrying
capability. The integrated fuse has been developed especially for this case The unique module locking system prevents the protection modules from
of application. It is not designed for continuous current, but rather for working loose due to vibrations during transport or the enormous forces
impulse current and short-circuit protection which ensures optimal per- of discharge. Nevertheless, the protection modules can be easily replaced
formance. The fuse can only be tripped at the end of the SPD’s service life without tools or the need to de-energise or remove the distribution board
so that separate replacement is never necessary. cover simply by pressing the module release button of the protection
modules. Each protective circuit in the multipole and single-pole arresters
Space-saving surge protection measures covering all functions specified and each protection module is mechanically coded to avoid installing an Surge Arresters – Type 2
in the installation standards can be implemented in installations with incorrect protection module.
short-circuit currents up to 25 kArms. All paths including the N-PE path
feature an operating state indicator as required by the IEC 60364-5-53 The surge arresters of the modular DEHNguard ... CI family feature multi-
standard. functional terminals on a standardised spacing of one module for connect-
ing conductors and busbars, allowing easy wiring with other DIN rail
Due to the “Thermo Dynamic Control” monitoring device, the surface mounted devices. Thus, a variety of applications can be easily connected
temperature of the heavy-duty varistor and the intensity of the discharge in series in accordance with IEC 60364-5-53 for optimal protection.
current are used for evaluation. The operating state of each protective
path is shown by means of a mechanical indicator with green and red

Valid as of August 1, 2020 You will find detailed product information on our website 55