Page 38 - Surge-Protection-E_0.pdf

Coordinated Lightning Current Arresters – Type 1
WBF
DEHN-FUNKENSTRECKEN-TECHNOLOGIE INSIDE
WELLENBRECHER-FUNKTION
DEHNbloc modular
• Coordinated spark-gap-based lightning current arrester
consisting of a base part and a plug-in protection module
• Maximum system availability due to RADAX Flow follow
current limitation
• No tripping of 32 A gG fuses up to short-circuit currents
of 50 kArms
• Discharge capacity up to 50 kA (10/350 µs)
• Directly coordinated with DEHNguard surge protective devices
without additional cable length
• Low voltage protection level
• Operating state / fault indication by green / red indicator flag
in the inspection window
• Easy replacement of protection modules without tools due
For protecting low-voltage consumer installations against surges and even direct to module locking system with module release button
lightning strikes. For installation in conformity with the lightning protection zone
concept at the boundaries from 0A – 1.

DEHNbloc M 1 ...: Coordinated and modular single-pole lightning current arrester with high follow current limitation
Lightning Current Arresters – Type 1 The modular devices of the DEHNbloc M product family are coordinated The modular design of the DEHNbloc M arresters makes them safe and
DEHNbloc M 1 ... FM: With remote signalling contact for monitoring device (floating changeover contact)

easy to use. Their vibration-proof module locking system, for example, is
lightning current arresters with a functional design.
unique. Shock or vibration during transport or operation or enormous
Energy coordination with type 2 surge arresters of the DEHNguard family
mechanical impulse loads resulting from discharges do not affect the
is ensured without additional cable lengths or decoupling coils. This is one
of the most important features of the Red/Line product families.
and protection module. Nevertheless, the protection modules can be eas-
The DEHNbloc M arresters combine high performance and ease of use in module locking system which ensures safe fixation both for the base part
ily replaced without tools by simply pressing the easy-to-use module re-
a single device. Their electrical parameters are rated for the most stringent lease button. Both the base part and protection module are mechanically
requirements within lightning and surge protection systems. DEHNbloc M coded to avoid installing an incorrect module. DEHNbloc M devices incor-
is ideally suited for use in the main distribution board of the low-voltage porate double terminals, allowing series connection of the arresters in a
consumer´s installation of a building. Equipped with the latest RADAX space-saving and cost-effective way according to IEC 60364-5-53 require-
Flow spark gap technology, the protection and availability of electrical ments for nominal currents up to 125 A.
installations is a top priority of DEHNbloc M.
Due to the unique follow current limitation and extinction, fuses are not The operating state / fault indicator of DEHNbloc M does not cause oper-
ating currents and instantly shows the operating state of the device. Apart
tripped by follow currents even in case of low-current-rated fuses in the from the standard visual indicator with red and green indicator flags,
installation. The leakage-current-free protective circuit and the mechani- DEHNbloc M ... FM devices feature an additional remote signalling output.
cal operating state indicator allow the device to be installed even in areas As the remote signalling contact is designed as a floating changeover
upstream of meter panels in low-voltage consumer installations. contact, the remote signal can, depending on the circuit concept, be used
as a make or break contact.
961 110 DB M 1 150
961 120 DB M 1 255 DEHNbloc M 1 ...
961 130 DB M 1 320
Coordinated and modular single-pole lightning current arrester with a high discharge capacity.
961 110 4013364118560 04 01 01 08 317 g
253,70 €
961 120 4013364118614 04 01 01 08 340 g
263,30 €
961 130 4013364118638 04 01 01 08 325 g
Type DB M 1 ... 150 255 320
266,60 €
Part No. 961 110 961 120 961 130
SPD according to EN 61643-11 / IEC 61643-11 type 1 / class I type 1 / class I type 1 / class I
Max. continuous operating voltage (a.c.) (UC) 150 V (50 / 60 Hz) 255 V (50 / 60 Hz) 320 V (50 / 60 Hz)
Lightning impulse current (10/350 µs) (Iimp) 35 kA 50 kA 25 kA
Voltage protection level (UP) ≤ 1.5 kV ≤ 2.5 kV ≤ 2.5 kV
Max. backup fuse (L) up to IK = 50 kArms (ta ≤ 0.2 s) — 500 A gG 315 A gG
Max. backup fuse (L) up to IK = 50 kArms (ta ≤ 5 s) — 315 A gG 315 A gG
Max. backup fuse (L) up to IK = 35 kArms (ta ≤ 0.2 s) 500 A gG — —
Max. backup fuse (L) up to IK = 35 kArms (ta ≤ 5 s) 315 A gG — —
Approvals UL, CSA VDE, KEMA, UL UL
961 115 DB M 1 150 FM
961 125 DB M 1 255 FM
961 135 DB M 1 320 FM DEHNbloc M 1 ... FM
Coordinated and modular single-pole lightning current arrester with a high discharge capacity;
961 115 4013364118577 04 01 01 08 321 g
278,20 € with remote signalling contact for monitoring system (floating changeover contact).
961 125 4013364118621 04 01 01 08 343 g
287,90 €
961 135 4013364118645 04 01 01 08 330 g
291,10 €
Type DB M 1 ... 150 FM 255 FM 320 FM
Part No. 961 115 961 125 961 135
SPD according to EN 61643-11 / IEC 61643-11 type 1 / class I type 1 / class I type 1 / class I
Max. continuous operating voltage (a.c.) (UC) 150 V (50 / 60 Hz) 255 V (50 / 60 Hz) 320 V (50 / 60 Hz)
Lightning impulse current (10/350 µs) (Iimp) 35 kA 50 kA 25 kA
Voltage protection level (UP) ≤ 1.5 kV ≤ 2.5 kV ≤ 2.5 kV
Max. backup fuse (L) up to IK = 50 kArms (ta ≤ 0.2 s) — 500 A gG 315 A gG
Max. backup fuse (L) up to IK = 50 kArms (ta ≤ 5 s) — 315 A gG 315 A gG
Max. backup fuse (L) up to IK = 35 kArms (ta ≤ 0.2 s) 500 A gG — —
Max. backup fuse (L) up to IK = 35 kArms (ta ≤ 5 s) 315 A gG — —
Approvals UL, CSA VDE, KEMA, UL UL
34 You will find detailed product information on our website Valid as of August 1, 2020