Surge Protection Barrier M-LB-Ex-4242

Surge protection for 2 signal lines
Nominal voltage 24 V
Surge protection barrier for non-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

Technical Data
Details
Product Documentation
Design / Simulation
Approvals
Associated Products
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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-Ex-4242

General specifications
Number of protected signal lines		2
Topology		non-grounded
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 3
Electrical specifications
Connection		protected area: terminals 1', 2' unprotected area: terminals 1, 2
Leakage current		< 30 µA bei U_c , line-line < 10 nA bei U_c , line-earth
Nominal voltage		24 V
Maximum continuous operating voltage		25.4 V AC and 36 V DC
Nominal load current		0.5 A at 80 °C (176 °F)
Series resistance		1 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 level		max. 65 V line-line for nominal discharge current I_n max. 1100 V line-earth for nominal discharge current I_n
Impulse reset time		< 30 ms
Cut-off frequency		3.5 MHz , line-line
Indicators/settings
Display elements		status display operating state (green) fault indication (red)
Conformity
Degree of protection		IEC 60529:2013
Functional safety		IEC/EN 61508:2010
Surge protective devices for low voltage		EN 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) For usage in hazardous area observe the EU-type examination certificate.
Storage temperature		-40 ... 80 °C (-40 ... 176 °F)
Relative humidity		max. 95 % , without condensation
Corrosion resistance		acc. to ISA-S71.04, severity level G3
Mechanical specifications
Degree of protection		IP20
Connection		spring terminals with push-in connection technology
Core cross section		0.2 ... 2.5 mm² one wire 0.2 ... 2.5 mm² fine-strand
Material
	Housing	Polyamide PA 6.6
Mass		approx. 35 g
Dimensions		6 x 90 x 69 mm (0.24 x 3.5 x 2.7 inch) (W x H x D)
	Height	90 mm
	Width	6 mm
	Depth	69 mm
Mounting		on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate		TÜV 22 ATEX 8880 X
	Marking	II (1)2G Ex ia [ia Ga] IIC T6...T4 Gb II 2G Ex ib IIC T6...T4 Gb II (1)D [Ex ia Da] IIIC
	Temperature class	T6 for ambient temperature ≤ 50 °C T5 for ambient temperature ≤ 70 °C T4 for ambient temperature ≤ 80 °C
	Voltage	30 V
	Current	500 mA , restrictions see certificate
	Power	5.32 W
	Internal capacitance	negligible
	Internal inductance	negligible
Directive conformity
	Directive 2014/34/EU	EN 60079-0:2018 , EN IEC 60079-7:2015+A1:2018 , EN 60079-11:2012
International approvals
IECEx approval
	IECEx certificate	IECEx TUR 22.0050X
	IECEx marking	Ex ia [ia Ga] IIC T6...T4 Gb Ex ib IIC T6...T4 Gb [Ex ia Da] IIIC
General information
Supplementary information		Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

Classifications

System	Classcode
ECLASS 13.0	27171202
ECLASS 12.0	27171202
ECLASS 11.0	27130805
ECLASS 10.0.1	27130805
ECLASS 9.0	27130805
ECLASS 8.0	27130805
ECLASS 5.1	27130801
ETIM 9.0	EC000941
ETIM 8.0	EC000941
ETIM 7.0	EC000941
ETIM 6.0	EC000941
ETIM 5.0	EC000941
UNSPSC 12.1	39121610

Details: M-LB-Ex-4242

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 is HART transparent.

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-Ex-4242

Brief Instructions	Language	File Type	File Size
Instruction leaflet / Beipackzettel	ALL	PDF	5366 KB
Safety and Security Documentation
Functional Safety Manual	ENG	PDF	1990 KB

Design / Simulation: M-LB-Ex-4242

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	2772 KB
CAE
CAE EPLAN Data Portal / CAE EPLAN Data Portal	ALL	LINK	---
CAE EPLAN macro EDZ / CAE EPLAN Makro EDZ	ALL	EDZ	1889 KB

Approvals: M-LB-Ex-4242

Certificates	Cert No.	Language	File Type	File Size
China CNEX CCC Ex Certificate	2023312304001608 (DEHN SE)	ALL	PDF	589 KB
EU ATEX Category 2 G EU-Type Exam. Certificate ATEX Category (1) D ATEX Category 2 (1)	ATEX TÜV 22 ATEX 8880 X	ALL	PDF	196 KB
TUV Rheinland IECEx Certificate of Conformity	IECEx TUR 22.0050X	ALL	LINK	---
Declaration of Conformity
EU Declaration of Conformity (P+F)	TDOC-7115_ENG	ENG	PDF	186 KB

Associated Products: M-LB-Ex-4242

Matching System Components

	M-LB-4400 Fault Status Module
	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

	M-LB-4800 Separation Wall
	For surge protection system M-LB-4000, Isolation acc. to IEC 60079-11, Color blue, DIN rail mountablepa

	M-LB-Ex-4242.M Protection Module for Surge Protection Barrier
	Protection module for 2 signal lines, Nominal voltage 24 V, Protection module for non-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: non-grounded, Safety Integrity Level (SIL): SIL 3, Nominal discharge current (8/20 µs): 5 kA per linepa

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Pepperl+Fuchs (Aust) Pty Ltd
131-149 Link Drive
Campbellfield, Victoria
Melbourne, Victoria 3061
Australia
sales@au.pepperl-fuchs.com
phone +61 3 9358 3400

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.