New Products

Pluggable DIN Rail Mounted SPDs
BLITZDUCTOR ® XT LifeCheck ® Modules
BXT ML4 BE C 12 / 24
1
1´
2
2´
45
12 51
(2/3 mods.)
3
4
protected
3´
4´
Dimension drawing BXT ML4 BE C
Basic circuit diagram BXT ML4 BE C
Space-saving combined lightning current and surge arrester module with LifeCheck feature for protecting
two pairs of balanced interfaces with diode protective circuit at the input, current loops
(TTY) and optocoupler inputs. If LifeCheck detects thermal or electrical overload, the arrester has to
be replaced. This status is indicated contactlessly by the DEHNrecord LC / MCM reader.
• LifeCheck SPD monitoring function
• Additional decoupling with regard to
terminal equipment
• For installation in conformity with the
lightning protection zones concept at
the boundaries from 0 A – 2 and higher
920 362
BXT ML4 BE C 12
920 364
BXT ML4 BE C 24
BXT ML4 BE C 12
920 362
Kombiableiter-Modul für 2 DoppeladernBLITZDUCTOR XT mit LifeCheck
BXT ML4 BE C 24
920 364
Kombiableiter-Modul für 2 DoppeladernBLITZDUCTOR XT mit LifeCheck
Type BXT ML4 BE C 12 BXT ML4 BE C 24
Part No. 920 362 920 364
SPD class M M
SPD monitoring system LifeCheck LifeCheck
Nominal voltage (U N ) 12 V 24 V
Max. continuous operating d.c. voltage (U C ) 15 V 33 V
Max. continuous operating a.c. voltage (U C ) 10.6 V 23.3 V
Nominal current at 80°C (I L ) 0.1 A 0.1 A
D1 Total lightning impulse current (10/350 μs) (I imp ) 10 kA 10 kA
D1 Lightning impulse current (10/350 μs) per line (I imp ) 2.5 kA 2.5 kA
C2 Total nominal discharge current (8/20 μs) (I n ) 20 kA 20 kA
C2 Nominal discharge current (8/20 μs) per line (I n ) 10 kA 10 kA
Voltage protection level line-line for I imp D1 (U p ) ≤ 30 V ≤ 52 V
Voltage protection level line-PG for I imp D1 (U p ) ≤ 35 V ≤ 66 V
Voltage protection level line-line at 1 kV/μs C3 (U p ) ≤ 19 V ≤ 45 V
Voltage protection level line-PG at 1 kV/μs C3 (U p ) ≤ 19 V ≤ 45 V
Series impedance per line 13.8 ohms 28.8 ohms
Cut-off frequency line-PG (f G ) 0.85 MHz 1.7 MHz
Capacitance line-line (C) ≤ 3.2 nF ≤ 1.5 nF
Capacitance line-PG (C) ≤ 3.2 nF ≤ 1.5 nF
Operating temperature range -40°C ... +80°C -40°C...+80°C
Degree of protection (with plugged-in protection module) IP 20 IP 20
Pluggable into base part base part
Earthing via base part base part
Enclosure material polyamide PA 6.6 polyamide PA 6.6
Colour yellow yellow
Test standards IEC 61643-21 / EN 61643-21 IEC 61643-21 / EN 61643-21, UL 497B
SIL classification SIL2 / SIL3 * ) SIL2 / SIL3 * )
ATEX approvals DEKRA 11ATEX0089 X: II 3 G Ex nA IIC T4 Gc DEKRA 11ATEX0089 X: II 3 G Ex nA IIC T4 Gc
IECEx approvals DEK 11.0032X: Ex nA IIC T4 Gc DEK 11.0032X: Ex nA IIC T4 Gc
Approvals GOST CSA, VdS, GOST
*) For more detailed information, please refer to www.dehn.de/en/sil/ and page 210
Accessories for BLITZDUCTOR ® XT LifeCheck ® Modules
Labelling system BA1-BA15
2x165 adhesive labels for labelling
DRC MCM XT monitoring devices
with their bus address.
Type BS BA1 BA15 BXT
Part No. 920 398
Colour
white
Earthing module
For direct earthing of lines connected
to the BLITZDUCTOR XT
base part.
Type
BXT M4 E
Part No 920 308
Colour
grey
Test / Disconnection module
Module for testing lines, plugs into
BLITZDUCTOR XT base parts
Type
BXT M4 T
Part No 920 309
Colour
grey
For ”Accessories for BLITZDUCTOR XT LifeCheck modules“, please also refer to pages 188/206/207/208/368/370.
www.dehn.de
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