Page 49 - Surge-Protection-E_0.pdf
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Lightning Current Arresters – Type 1
                                                                                                   WBF
                                                                                                   DEHN-FUNKENSTRECKEN-TECHNOLOGIE INSIDE
                                                                                                  WELLENBRECHER-FUNKTION
           DEHNbloc
           • Encapsulated non-exhausting creepage discharge spark gap
           • RADAX Flow spark gap technology with high follow current
            limitation
           • Energy coordination with other arresters of the Red/Line
            product family
           • Can also be used upstream of meter panels due to its high
            insulation resistance
           • Multifunctional terminal for connecting conductors and busbars
           • Single-pole and three-pole version (lightning impulse currents
            up to 100 kA depending on the system configuration)
           • Modular single-pole version also available


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


           DEHNbloc H M 1 255:  Modular single-pole lightning current arrester with high follow current limitation
           DEHNbloc 1 255 H:   Single-pole lightning current arrester with high follow current limitation
           DEHNbloc 3 255 H:   Three-pole lightning current arrester with high follow current limitation


           The spark gaps of the DEHNbloc lightning current arresters allow compact   But the DEHNbloc H family concept also stands out due to other product   Lightning Current Arresters – Type 1
           configuration of low-voltage distribution boards. By using pressurised and   features: With its double terminals on the phase and earth side, the sin-
           encapsulated creepage discharge spark gaps, no safety distance from   gle-pole DEHNbloc 1 255 H device offers various application options.
           busbars and special flameproof enclosures are necessary.  The DBH M 1 255 device with a new arrester design features the approved
           With a lightning current discharge capacity up to 50 kA (10/350 µs) per   module release system that safely fixes the protection module to the base
           pole, DEHNbloc devices fulfil the highest national and international light-  part even at maximum loads on the protection module. The module can
           ning protection and application standards.           be easily replaced without tools by simply pressing the module release
           Consistent pursuit of the idea of integration has made the DEHNbloc   button of the protection module.
           devices  even  more  efficient: With  DEHNbloc  H,  the  groundbreaking   By using the double terminals suitable for all conductors, even three-pole
           RADAX Flow spark gap technology for follow current extinction and lim-  DEHNbloc 3 255 H arresters can be connected in series in a space-saving
           itation was integrated into the DEHNbloc family.     and cost-effective way up to nominal currents of 125 A as preferred by
           The RADAX flow technology prevents interruptions in operation due to   IEC 60364-5-53.
           tripping of the circuit breaker when the arrester responds. In times where   If DEHNbloc is to be used with other DIN rail mounted devices, the multi-
           systems increasingly depend on a properly functioning electrical infra-  functional terminals are ideally suited for connecting conductors and
           structure, this is an indispensable product feature. Thanks to the patented   busbars.
           RADAX Flow principle, even the amplitude of short-circuit currents in in-
           stallations up to 50 kArms can be limited to approx. 500 A and extin-
           guished after approximately 5 ms. This feature ensures selectivity even in
           case of low-current-rated fuses.



           DEHNbloc H                                                                                       961 122   DBH M 1 255
           Modular single-pole lightning current arrester with a high discharge capacity for use in 230 / 400 V systems.
                                                                                                            961 122   4013364118652  04 01 01 08   358 g
                                                                                                                  182,30 €
           Type                              DBH M 1 255
           Part No.                          961 122
           SPD according to EN 61643-11 / IEC 61643-11  type 1 / class I
           Max. continuous operating voltage (a.c.)  (UC)  255 V (50 / 60 Hz)
           Lightning impulse current (10/350 µs)  (Iimp)  50 kA
           Voltage protection level  (UP)    ≤ 4 kV
           Max. backup fuse (L) up to IK = 50 kArms (ta ≤ 0.2 s)  500 A gG
           Max. backup fuse (L) up to IK = 50 kArms (ta ≤ 5 s)  315 A gG




           Accessories for DEHNbloc

           DB H Spark-Gap-Based Protection Module                                                           961 022   DBH MOD 255
           Type                              DBH MOD 255
                                                                                                            961 022        4013364118669  04 01 01 08   195 g
           Part No.                          961 022
                                                                                                             160,00 €
           Max. continuous operating voltage (a.c.)  (UC)  255 V





           Valid as of August 1, 2020                         You will find detailed product information on our website   45
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