Pepperl+Fuchs M-LB-Ex-5242
Protection Module

Pepperl+Fuchs M-LB-Ex-5242
  • Protection module for 2 signal lines
  • Nominal voltage 24 V DC
  • Protection module for non-grounded signal lines
  • Max. surge current (8/20 micro-s) 20 kA
  • Uninterruptable operation (auto reset)
  • Status indication output
  • Mounting on base module, pluggable
  • Up to SIL 3 acc. to IEC 61508
Item Number: M-LB-Ex-5242
Total price: 148.22
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  • Datasheet
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  • Comments
Massapprox. 20 g
Degree of protectionIP20
Current 8 mA
Impulse reset time< 500 ms
Ambient temperature-40 ... 60 В°C (-40 ... 140 В°F)
Observe the temperature range limited by derating, see section derating.
Connectionprotected area: terminals 3, 4
unprotected area: terminals 1, 2
Total discharge current (8/20 micro/s)20 kA (1x)
Nominal discharge current (8/20 micro/s)5 kA per line (10x)
Connectionvia Universal Power Rail M-UPR-03-S
Surge protective devices for low voltageEN 61643-21:2001+A1:2009+A2:2013
IEC 61643-21:2001+A1:2008+A2:2012
Impulse rating1 kV/0.5 kA (category C1)
10 kV/5 kA (category C2)
1 kA (category D1)
Display elementsLED PWR (power supply), green LED
LED FLT (fault signal), red LED
LED CHK (maintenance signal), yellow LED
Nominal voltage24 V DC
Nominal voltagesee power feed module M-LB-5300
Signal lines/power supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Insertion loss 0.03 dB, at 0 ... 4 kHz, in 600 andOmega;-System
3 dB, at 0 ... 600 kHz, in 100 andOmega;-System
Status indicationfault and maintenance signal via Universal Power Rail M-UPR-03-S
EU-Type Examination CertificateBVS 17 ATEX E 069 X
Safety Integrity Level (SIL)SIL 3
Mountingpluggable in base module for mounting on 35 mm DIN mounting rail
Rated current500 mA , restrictions see derating characteristics
Number of protected signal lines2
Rated surge current (8/20 micro/s)10 kA per line (1x)
Impulse discharge current (10/350 micro/s)1 kA per line (2x)
Degree of protectionIEC 60529:2013
Designationsystem components:
- base module with screw terminals M-LB-Ex-5000
- base module with spring terminals M-LB-Ex-5000.SP
- power feed module M-LB-5300
- fault status module M-LB-5400
- maintenance status module M-LB-5500
- universal power rail M-UPR-03-S
- place holder module M-LB-Ex-5900
- separation wall M-UPR-I
Maximum continuous operating voltage30 V DC
Storage temperature-40 ... 85 В°C (-40 ... 185 В°F)
Leakage current< 3 andmicro;A at 24 V and 25 В°C (77 В°F) , line-line
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see
Functional safetyIEC/EN 61508:2010
Relative humiditymax. 95 % , without condensation
Dimensions6.2 x 77 x 79 mm
Signal lines/fault indication outputreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Series resistance 0.5 andOmega; per line at 25 В°C (77 В°F)
Voltage protection levelmax. 45 V line-line for nominal discharge current In
max. 1400 V line-earth for nominal discharge current In


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