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M-LB-Ex-2144 Surge Protection Barrier

Key Benefits at a Glance

  • Surge protection barrier for 2 signal lines
  • Nominal voltage 24 V DC
  • Surge protection barrier for grounded signal lines
  • Max. surge current (8/20 µs) 20 kA
  • Connection via screw terminals
  • DIN rail mountable
  • Up to SIL 3 acc. to IEC/EN 61508

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Please contact us for exact delivery estimation.87.00 USD Net price—your individual price will be shown during checkout process.
Product photo: Surge Protection Barrier M-LB-Ex-2144
Product photo: Surge Protection Barrier M-LB-Ex-2144
Approval
Approval
Functional Safety: Safety Integrity Level - 3
Product Compliance: USA - cULus
Product Compliance: Europe – CE
Note

All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

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DatasheetFunctionClassificationProduct DocumentationDesign / SimulationApprovalsRelated Products

Technical data of M-LB-Ex-2144

Number of protected signal lines2
Topologygrounded
Safety Integrity Level (SIL)SIL 3
Connectionprotected area: terminals 4, 5
unprotected area: terminals 2, 3
shielding/grounding: terminal 1 (optional)
Rated currentIr500 mA , restrictions see derating tables
UL : 400 mA , restrictions see control drawing
Leakage current< 6 µA at 24 V and 25 °C (77 °F) , line-line
Nominal voltage24 V DC
Maximum continuous operating voltageUc30 V DC
Series resistance≤ 3 Ω per line
Impulse rating1 kV/0.5 kA (category C1)
10 kV/5 kA (category C2)
1 kA (category D1)
Impulse discharge current (10/350 µs)Iimp1 kA per line (2x)
Nominal discharge current (8/20 µs)In5 kA per line (10x)
Total discharge current (8/20 µs)Itotal20 kA (1x) , overstressed fault mode 3 acc. to IEC 61643-21
Voltage protection levelUpmax. 45 V line-line for nominal discharge current In
max. 60 V line-earth for nominal discharge current In
Impulse reset time< 500 ms
Insertion loss≤ 3 dB at 0 ... 700 kHz in 100 Ω system
Electromagnetic compatibilityEN 61326-3-1:2017
Degree of protectionIEC 60529:2013
Functional safetyIEC/EN 61508:2010
Surge protective devices for low voltageIEC 61643-21:2000+A1:2008+A2:2012
Ambient temperature-40 ... 80 °C (-40 ... 176 °F)
Observe the temperature range limited by derating, see section derating.
Storage temperature-40 ... 85 °C (-40 ... 185 °F)
Relative humiditymax. 95 % , without condensation
Corrosion resistanceacc. to ISA-S71.04, severity level G3
Degree of protectionIP20 , after mounting of the insulation spacer
Connectionscrew terminals , max. core cross section 1 x 2.5 mm2
MaterialPolyamide (PA)
Massapprox. 32 g
Dimensions6.2 x 93 x 72.4 mm (0.24 x 3.7 x 2.8 inch) (W x H x D)
Height93 mm
Width6.2 mm
Depth72.4 mm
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
EU-type examination certificateKIWA 19 ATEX 0003 X
MarkingEx-Hexagon II 2(1)G Ex ia [ia Ga] IIC T6...T4 Gb
[exsign] II (1)D [Ex ia Da] IIIC
[exsign] I (M1) [Ex ia Ma] I
Temperature classT6, T5 or T4 , restrictions see derating tables
VoltageUi30 V
CurrentIi500 mA , restrictions see derating tables
Internal capacitanceCinegligible
Internal inductanceLi 20 µH
Directive conformity
Directive 2014/34/EUEN IEC 60079-0:2018+AC:2020 , EN 60079-11:2012
UL approvalE501704
E501881
Control drawing116-0479
CurrentIi400 mA , restrictions see control drawing
Breakdown voltageUBR30 ... 45 V line-line at 100 V/s acc. to UL 497B
30 ... 45 V line-earth at 100 V/s acc. to UL 497B
< 1000 V at 100 V/µs acc. to UL 497B
IECEx approval
IECEx certificateIECEx KIWA 19.0003X
IECEx markingEx ia [ia Ga] IIC T6...T4 Gb
[Ex ia Da] IIIC
[Ex ia Ma] I
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
General Notes
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