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Explosion Protection

Surge Protection Barrier M-LB-4254

M-LB-4254
  • Surge protection for 2 signal lines
  • Nominal voltage 48 V
  • Surge protection barrier for grounded signal lines
  • Max. surge current (8/20 µs) 20 kA
  • Uninterruptable operation (auto reset)
  • Status indication
  • Modular design, pluggable
  • Up to SIL 3 acc. to IEC/EN 61508
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Please 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.

Download the complete datasheet as a PDF:


Datasheet excerpt: Technical data of  M-LB-4254

General specifications
Number of protected signal lines2
Topologygrounded
Functional safety related parameters
Safety Integrity Level (SIL)SIL 3
Electrical specifications
Connectionprotected area: terminals 1', 2'
unprotected area: terminals 1, 2
Leakage current< 20 nA bei Uc , line-line
< 100 nA bei Uc , line-earth
Nominal voltage48 V
Maximum continuous operating voltage38.1 V AC and 54 V DC
Nominal load current0.75 A at 70 °C (158 °F)
Series resistance1 Ω per line
Impulse discharge current (10/350 µs)1.5 kA per line
Nominal discharge current (8/20 µs)5 kA per line
Max. surge current (8/20 µs)20 kA
Total discharge current (8/20 µs)10 kA
Voltage protection levelmax. 140 V line-line for nominal discharge current In
max. 90 V line-earth for nominal discharge current In
Impulse reset time< 30 ms
Cut-off frequency5 MHz , line-line
Indicators/settings
Display elementsstatus display
operating state (green)
fault indication (red)
Conformity
Degree of protectionIEC 60529:2013
Functional safetyIEC/EN 61508:2010
Surge protective devices for low voltageEN 61643-21:2001+A1:2009+A2:2013
IEC 61643-21:2001+A1:2008+A2:2012
Ambient conditions
Ambient temperature-40 ... 80 °C (-40 ... 176 °F)
Storage temperature-40 ... 80 °C (-40 ... 176 °F)
Relative humiditymax. 95 % , without condensation
Corrosion resistanceacc. to ISA-S71.04, severity level G3
Mechanical specifications
Degree of protectionIP20
Connectionspring terminals with push-in connection technology
Core cross section0.2 ... 2.5 mm2 one wire
0.2 ... 2.5 mm2 fine-strand
Material
HousingPolyamide PA 6.6
Massapprox. 35 g
Dimensions6 x 90 x 69 mm (0.24 x 3.5 x 2.7 inch) (W x H x D)
Height90 mm
Width6 mm
Depth69 mm
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
CertificateTÜV 22 ATEX 8881 X
MarkingEx-Hexagon II 3G Ex ec IIC T4 Gc
Temperature classT4 for ambient temperature ≤ 80 °C
Directive conformity
Directive 2014/34/EUEN 60079-0:2018 , EN IEC 60079-7:2015+A1:2018
International approvals
UL approvalE501704
IECEx approval
IECEx certificateIECEx TUR 22.0051X
IECEx markingEx ec IIC T4 Gc
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

Classifications

SystemClasscode
ECLASS 13.027171202
ECLASS 12.027171202
ECLASS 11.027130805
ECLASS 10.0.127130805
ECLASS 9.027130805
ECLASS 8.027130805
ECLASS 5.127130801
ETIM 9.0EC000941
ETIM 8.0EC000941
ETIM 7.0EC000941
ETIM 6.0EC000941
ETIM 5.0EC000941
UNSPSC 12.139121610

Details: M-LB-4254

Function

The device limits induced transients of different causes, e. g. lightning or switching operations. The limitation is achieved by diverting the current to earth and limiting the signal loop voltage during the duration of the overvoltage pulse.

The device consists of base module and protection module.The protection module can be replaced without tools.

The device has a status indication at the front.

The device is mounted on a 35 mm DIN mounting rail according to EN 60715.

Product Documentation: M-LB-4254

Language Selection:
Brief InstructionsLanguageFile TypeFile Size
Instruction leaflet / BeipackzettelALLPDF5479 KB
Safety and Security Documentation
Functional Safety ManualENGPDF1990 KB

Design / Simulation: M-LB-4254

Language Selection:
CADLanguageFile TypeFile Size
CAD 3-D / CAD 3-DALLSTP2772 KB
CAE
CAE EPLAN Data Portal / CAE EPLAN Data PortalALLLINK---
CAE EPLAN macro EDZ / CAE EPLAN Makro EDZALLEDZ1886 KB

Approvals: M-LB-4254

Language Selection:
CertificatesCertificate No.LanguageFile TypeFile Size
China CNEX CCC Ex Certificate2023312304001609 (DEHN SE)ALLPDF931 KB
EU ATEX Category 3 GTÜV 22 ATEX 8881 XALLPDF187 KB
TUV RheinlandIECEx TUR 22.0051XALLLINK---
USA ULUL E501704ALLPDF533 KB
Declaration of Conformity
EU Declaration of Conformity (P+F)TDOC-7118_ENGENGPDF186 KB

Associated Products: M-LB-4254

Matching System Components
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Two-part monitoring device, Device set with transmitter/receiver and reverse unit, Fault indication via LED, Status indication output, Modularity: two-piece, Display elements: status display
operating state (green)
fault indication (red), Device suitable for mounting in equipment protection level: Gcpa
Accessories
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For surge protection system M-LB-4000, Isolation acc. to IEC 60079-11, Color blue, DIN rail mountablepa
  • M-LB-4254.M
  • Protection Module for Surge Protection Barrier
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Protection module for 2 signal lines, Nominal voltage 48 V, Protection module for grounded signal lines, Max. surge current (8/20 µs) 20 kA, Uninterruptable operation (auto reset), Status indication, Mounting on base module, pluggable, Up to SIL 3 acc. to IEC/EN 61508, Number of protected signal lines: 2, Topology: grounded, Safety Integrity Level (SIL): SIL 3, Nominal discharge current (8/20 µs): 5 kA per linepa
General Notes Relating to Pepperl+Fuchs Product Information
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Pepperl+Fuchs Inc.
1600 Enterprise Parkway
Twinsburg, OH 44087
United States of America
sales@us.pepperl-fuchs.com
phone +1 330 425-3555

© 2024 All Rights Reserved. Pepperl+Fuchs does not sell personal data.

Pepperl+Fuchs is a leading developer and manufacturer of electronic sensors and components for the global automation market. Continuous innovation, enduring quality, and steady growth have been the foundation of our success for more than 70 years. Pepperl+Fuchs employs 6,300 people worldwide and has manufacturing facilities in Germany, USA, Singapore, Hungary, Indonesia and Vietnam, most of them ISO 9001 certified. Pepperl+Fuchs does not sell personal data.