New Products

Type 2 Surge Arresters
DEHNguard ® modular
DEHNguard M TT 2P ...
30
L
N
L
N
90
45
36 7
(2 mods.)
PE
43.5
66
9 PE
Dimension drawing DG M TT 2P ...
Basic circuit diagram DG M TT 2P ...
Modular surge arrester for use in single-phase TT and TN systems ("1+1" circuit)
• Prewired complete unit consisting of a
base part and plug-in protection modules
• High discharge capacity due to heavyduty
zinc oxide varistors/spark gaps
• High reliability due to "Thermo Dynamic
Control" SPD monitoring device
952 110
DG M TT 2P 275
952 130
DG M TT 2P 320
952 111
DG M TT 2P 385
DG M TT 2P 275
952 110
Überspannungsableiter Typ 2 DEHNguard M für einphasige TT- und TN-
Systeme
DG M TT 2P 320
952 130
Überspannungsableiter Typ 2 DEHNguard M für einphasige TT- und TN-
Systeme
DG M TT 2P 385
952 111
Überspannungsableiter Typ 2 DEHNguard M für einphasige TT- und TN-
Systeme
Type DG M TT 2P 275 DG M TT 2P 320 DG M TT 2P 385
Part No. 952 110 952 130 952 111
SPD according to EN 61643-11 Type 2 Type 2 Type 2
SPD according to IEC 61643-1/-11 Class II Class II Class II
Nominal a.c. voltage (U N ) 230 V 230 V 230 V
Max. continuous operating a.c. voltage [L-N] (U C ) 275 V 320 V 385 V
Max. continuous operating a.c. voltage [N-PE] (U C ) 255 V 255 V 255 V
Nominal discharge current (8/20 μs) (I n ) 20 kA 20 kA 20 kA
Max. discharge current (8/20 μs) (I max ) 40 kA 40 kA 40 kA
Lightning impulse current (10/350 μs) [N-PE] (I imp ) 12 kA 12 kA 12 kA
Voltage protection level [L-N] (U P ) ≤ 1.25 kV ≤ 1.5 kV ≤ 1.75 kV
Voltage protection level [L-N] at 5 kA (U P ) ≤ 1 kV ≤ 1.2 kV ≤ 1.35 kV
Voltage protection level [N-PE] (U P ) ≤ 1.5 kV ≤ 1.5 kV ≤ 1.5 kV
Follow current extinguishing capability [N-PE] (I fi ) 100 A rms 100 A rms 100 A rms
Response time [L-N] (t A ) ≤ 25 ns ≤ 25 ns ≤ 25 ns
Response time [N-PE] (t A ) ≤ 100 ns ≤ 100 ns ≤ 100 ns
Max. mains-side overcurrent protection 125 A gL/gG 125 A gL/gG 125 A gL/gG
Short-circuit withstand capability for max.
mains-side overcurrent protection 50 kA rms 25 kA rms 25 kA rms
Temporary overvoltage (TOV) [L-N] (U T ) 335 V / 5 sec. 335 V / 5 sec. 385 V / 5 sec.
Temporary overvoltage (TOV) [N-PE] (U T ) 1200 V / 200 ms 1200 V / 200 ms 1200 V / 200 ms
TOV characteristics withstand withstand withstand
Operating temperature range (T U ) -40°C...+80°C -40°C...+80°C -40°C...+80°C
Operating state/fault indication green / red green / red green / red
Number of ports 1 1 1
Cross-sectional area (min.) 1.5 mm 2 solid/flexible 1.5 mm 2 solid/flexible 1.5 mm 2 solid/flexible
Cross-sectional area (max.) 35 mm 2 stranded/25 mm 2 flexible 35 mm 2 stranded/25 mm 2 flexible 35 mm 2 stranded/25 mm 2 flexible
For mounting on 35 mm DIN rail acc. to EN 60715 35 mm DIN rail acc. to EN 60715 35 mm DIN rail acc. to EN 60715
Enclosure material thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0
Place of installation indoor installation indoor installation indoor installation
Degree of protection IP 20 IP 20 IP 20
Capacity 2 modules, DIN 43880 2 modules, DIN 43880 2 modules, DIN 43880
Approvals KEMA, VDE, UL, VdS KEMA KEMA
Surge Arresters Type 2
Accessory for DEHNguard ® modular
N-PE Spark-Gap-Based Protection Module
for DEHNguard M TT ...
N-PE spark-gap-based protection module for two-pole
and four-pole DEHNguard DG M TT ... surge arresters
Type
DG MOD NPE
Part No. 952 050
Max. continuous operating a.c. voltage (U C ) 255 V
Accessory for DEHNguard ® modular
Varistor-Based Protection Module
Varistor-based protection module for DEHNguard M ...
and DEHNguard S ... surge arresters
Type DG MOD ... 275 320 385
Part No. 952 010 952 013 952 014
Max. continuous operating
a.c. voltage (U C ) 275 V 320 V 385 V
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