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DEHNguard ® modular<br />
DEHNguard M TT 2P ... FM<br />
Type 2 Surge Arresters<br />
L<br />
N<br />
30<br />
L<br />
N<br />
12<br />
11<br />
14<br />
90<br />
45<br />
36 7<br />
(2 mods.)<br />
PE<br />
43.5<br />
66<br />
9<br />
PE<br />
15.3<br />
9<br />
11<br />
• Prewired complete unit consisting of a<br />
base part and plug-in protection modules<br />
• High discharge capacity due to heavyduty<br />
zinc oxide varistors/spark gaps<br />
• High reliability due to "Thermo Dynamic<br />
Control" SPD monitoring device<br />
Basic circuit diagram DG M TT 2P ... FM<br />
Dimension drawing DG M TT 2P ... FM<br />
Modular surge arrester for use in single-phase TT and TN systems ("1+1" circuit); with floating<br />
remote signalling contact<br />
Surge Arresters Type 2<br />
Type DG M TT 2P 275 FM DG M TT 2P 320 FM DG M TT 2P 385 FM<br />
Part No. 952 115 952 135 952 116<br />
SPD according to EN 61643-11 Type 2 Type 2 Type 2<br />
SPD according to IEC 61643-1/-11 Class II Class II Class II<br />
Nominal a.c. voltage (U N ) 230 V 230 V 230 V<br />
Max. continuous operating a.c. voltage [L-N] (U C ) 275 V 320 V 385 V<br />
Max. continuous operating a.c. voltage [N-PE] (U C ) 255 V 255 V 255 V<br />
Nominal discharge current (8/20 μs) (I n ) 20 kA 20 kA 20 kA<br />
Max. discharge current (8/20 μs) (I max ) 40 kA 40 kA 40 kA<br />
Lightning impulse current (10/350 μs) [N-PE] (I imp ) 12 kA 12 kA 12 kA<br />
Voltage protection level [L-N] (U P ) ≤ 1.25 kV ≤ 1.5 kV ≤ 1.75 kV<br />
Voltage protection level [L-N] at 5 kA (U P ) ≤ 1 kV ≤ 1.2 kV ≤ 1.35 kV<br />
Voltage protection level [N-PE] (U P ) ≤ 1.5 kV ≤ 1.5 kV ≤ 1.5 kV<br />
Follow current extinguishing capability [N-PE] (I fi ) 100 A rms 100 A rms 100 A rms<br />
Response time [L-N] (t A ) ≤ 25 ns ≤ 25 ns ≤ 25 ns<br />
Response time [N-PE] (t A ) ≤ 100 ns ≤ 100 ns ≤ 100 ns<br />
Max. mains-side overcurrent protection 125 A gL/gG 125 A gL/gG 125 A gL/gG<br />
Short-circuit withstand capability for max.<br />
mains-side overcurrent protection 50 kA rms 25 kA rms 25 kA rms<br />
Temporary overvoltage (TOV) [L-N] (U T ) 335 V / 5 sec. 335 V / 5 sec. 385 V / 5 sec.<br />
Temporary overvoltage (TOV) [N-PE] (U T ) 1200 V / 200 ms 1200 V / 200 ms 1200 V / 200 ms<br />
TOV characteristics withstand withstand withstand<br />
Operating temperature range (T U ) -40°C...+80°C -40°C...+80°C -40°C...+80°C<br />
Operating state/fault indication green / red green / red green / red<br />
Number of ports 1 1 1<br />
Cross-sectional area (min.) 1.5 mm 2 solid/flexible 1.5 mm 2 solid/flexible 1.5 mm 2 solid/flexible<br />
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<br />
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<br />
Enclosure material thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0<br />
Place of installation indoor installation indoor installation indoor installation<br />
Degree of protection IP 20 IP 20 IP 20<br />
Capacity 2 modules, DIN 43880 2 modules, DIN 43880 2 modules, DIN 43880<br />
Approvals KEMA, VDE, UL, VdS KEMA KEMA<br />
Type of remote signalling contact changeover contact changeover contact changeover contact<br />
a.c. switching capacity 250 V/0.5 A 250 V/0.5 A 250 V/0.5 A<br />
d.c. switching capacity<br />
250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A 250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A 250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A<br />
Cross-sectional area for remote signalling terminals max. 1.5 mm 2 solid/flexible max. 1.5 mm 2 solid/flexible max. 1.5 mm 2 solid/flexible<br />
952 115<br />
DG M TT 2P 275 FM<br />
952 135<br />
DG M TT 2P 320 FM<br />
952 116<br />
DG M TT 2P 385 FM<br />
DG M TT 2P 275 FM<br />
952 115<br />
Überspannungsableiter Typ 2 DEHNguard M für einphasige TT- und TN-<br />
Systeme<br />
DG M TT 2P 320 FM<br />
952 135<br />
Überspannungsableiter Typ 2 DEHNguard M für einphasige TT- und TN-<br />
Systemee<br />
DG M TT 2P 385 FM<br />
952 116<br />
Überspannungsableiter Typ 2 DEHNguard M für einphasige TT- und TN-<br />
Systeme<br />
Accessory for DEHNguard ® modular<br />
Varistor-Based Protection Module<br />
Varistor-based protection module for DEHNguard M ...<br />
and DEHNguard S ... surge arresters<br />
Type DG MOD ... 275 320 385<br />
Part No. 952 010 952 013 952 014<br />
Max. continuous operating<br />
a.c. voltage (U C ) 275 V 320 V 385 V<br />
Accessory for DEHNguard ® modular<br />
N-PE Spark-Gap-Based Protection Module<br />
for DEHNguard M TT ...<br />
N-PE spark-gap-based protection module for two-pole<br />
and four-pole DEHNguard DG M TT ... surge arresters<br />
Type<br />
DG MOD NPE<br />
Part No. 952 050<br />
Max. continuous operating a.c. voltage (U C ) 255 V<br />
94 www.dehn.de
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