Pepperl+Fuchs M-LB-Ex-2144
Surge Protection Barrier

Pepperl+Fuchs M-LB-Ex-2144
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  • Surge protection barrier for 2 signal lines
  • Nominal voltage 24 V DC
  • Surge protection barrier for grounded signal lines
  • Max. surge current (8/20 µ-s) 20 kA
  • Connection via screw terminals
  • DIN rail mountable
  • Up to SIL 3 acc. to IEC 61508
Item Number: M-LB-Ex-2144
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Relative humiditymax. 95 % , without condensation
Impulse reset time< 500 ms
Insertion loss≤ 3 dB at 0 ... 700 kHz in 100 Ω system
Impulse rating1 kV/0.5 kA (category C1)
10 kV/5 kA (category C2)
1 kA (category D1)
Maximum continuous operating voltage30 V DC
Massapprox. 32 g
Voltage protection levelmax. 45 V line-line for nominal discharge current In
max. 60 V line-earth for nominal discharge current In
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
Surge protective devices for low voltageIEC 61643-21:2000+A1:2008+A2:2012
EU-type examination certificateKIWA 19 ATEX 0003 X
Degree of protectionIP20 , after mounting of the insulation spacer
Rated current500 mA , restrictions see derating characteristics
Impulse discharge current (10/350 µs)1 kA per line (2x)
Safety Integrity Level (SIL)SIL 3
MaterialPolyamide (PA)
Total discharge current (8/20 µs)20 kA (1x) , overstressed fault mode 3 acc. to IEC 61643-21
Nominal voltage24 V DC
Leakage current< 6 µA at 24 V and 25 ?Β°C (77 ?Β°F) , line-line
Functional safetyIEC/EN 61508:2010
Designation- insulation spacer M-LB-2800
- terminal block USLKG5
Nominal discharge current (8/20 µs)5 kA per line (10x)
Connectionscrew terminals , max. core cross section 1 x 2.5 mm2
Ambient temperature-40 ... 80 ?Β°C (-40 ... 176 ?Β°F)
Observe the temperature range limited by derating, see section derating.
Storage temperature-40 ... 85 ?Β°C (-40 ... 185 ?Β°F)
Topologygrounded
Number of protected signal lines2
Connectionprotected area: terminals 4, 5
unprotected area: terminals 2, 3
shielding/grounding: terminal 1 (optional)
Dimensions6.2 x 72.4 x 93 mm
Electromagnetic compatibilityEN 61326-3-1:2017
Series resistance≤ 3 Ω per line
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Degree of protectionIEC 60529:2013

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