Datasheet
page1©2011 DEHN + SÖHNE GmbH + Co. KG Hans-Dehn-Str. 1 Postfach 1640 D-92306 Neumarkt, Germany, Tel. +499181 906-700 www.dehn.de, as at: 2011-05-02
INFORMATION TECHNOLOGY SYSTEMS BLITZDUCTOR® XT LifeCheck®
Modules
PLUGGABLE SPDS FOR DIN RAIL MOUNTING BXT ML4 BD HF 5
Dimension drawing BXT ML4 BD HF If LifeCheck detects thermal and electrical
overload, the SPD has to be replaced. This
status is indicated contactlessly by the
DEHNrecord LC reader.
Space-saving combined lightning current and surge arrester module with LifeCheck feature for
protecting 2 pairs in high-frequency bus systems or video transmission systems.
LifeCheck SPD monitoring function
Minimum signal disturbance
For installation in conformity with the lightning
protection zones concept at the boundaries
from 0
A
– 2 and higher
BXT ML4 BD HF 5
SPD class M
SPD monitoring system LifeCheck
Nominal voltage [U
N]
5 V
Max. continuous operating d.c. voltage [U
C]
6.0 V
Max. continuous operating a.c. voltage [U
C]
4.2 V
Nominal current at 45°C [I
L]
1.0 A
D1 Total lightning impulse current (10/350 µs) [I
imp]
10 kA
D1 Lightning impulse current (10/350 µs) per line [I
imp]
2.5 kA
C2 Total nominal discharge current (8/20 µs) [I
n]
20 kA
C2 Nominal discharge current (8/20 µs) per line [I
n]
10 kA
Voltage protection level line-line for I
imp
D1 [U
p]
≤ 25 V
Voltage protection level line-PG for I
imp
D1 [U
p]
≤ 550 V
Voltage protection level line-line at 1 kV/µs C3 [U
p]
≤ 11 V
Voltage protection level line-PG at 1 kV/µs C3 [U
p]
≤ 550 V
Series impedance per line 1.0 ohm(s)
Cut-off frequency line-line [f
G]
100.0 MHz
Capacitance line-line [C] ≤ 25 pF
Capacitance line-PG [C] ≤ 16 pF
Operating temperature range -40°C...+80°C
Degree of protection (plugged-in) IP 20
Pluggable into base part
Earthing via base part
Enclosure material polyamide PA 6.6
Colour yellow
Test standards IEC 61643-21, UL 497B
SIL classification SIL2
for more details see: www.dehn.de/en/sil/
Ex certifications ATEX: DEKRA 11ATEX0089 X: II 3 G Ex nA IIC T4 Gc
IECEx DEK 11.0032X: Ex nA II T4 Gc
Approvals, Certifications CSA, VdS, UL, GOST
Ordering information
Type BXT ML4 BD HF 5
Part No. 920 371
Packing unit 1 pc
We reserve the right to modify design, technology, dimensions, weights and materials according to technical progress. Illustrations are non-binding. Pictures may differ from the modules described.