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Pepperl Fuchs M-LB-2142

MPN: M-LB-2142 · Brand: Pepperl Fuchs
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12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
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Quick facts

AvailabilityConfirmed on request
CategoryDevices for Signal Line Protection
Lifecycleactive
Warranty12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can M-LB-2142 be shipped?

M-LB-2142 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up M-LB-2142 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for M-LB-2142 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for M-LB-2142, subject to availability and destination.

Surge Protection Barrier. Surge protection barrier for 2 signal lines, Nominal voltage 24 V DC, Surge protection barrier for non-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, Modularity: one-piece, Number of protected signal lines: 2, Topology: non-grounded, Safety Integrity Level (SIL): SIL 3, Nominal voltage: 24 V DC, Nominal discharge current (8/20 µs): 5 kA per line (10x). Number of protected signal lines: 2. Topology: non-grounded. Safety Integrity Level (SIL): SIL 3. Connection: protected area: terminals 4, 5 unprotected area: terminals 2, 3 shielding/grounding: terminal 1 (optional). Rated current: 500 mA , restrictions see derating tables UL : 400 mA , restrictions see derating tables. Leakage current: < 3 µA at 24 V and 25 °C (77 °F) , line-line. Nominal voltage: 24 V DC. Maximum continuous operating voltage: 30 V DC. Series resistance: ≤ 3 Ω per line. Impulse rating: 1 kV/0.5 kA (category C1) 10 kV/5 kA (category C2)1 kA (category D1). Impulse discharge current (10/350 µs): 1 kA per line (2x). Nominal discharge current (8/20 µs): 5 kA per line (10x). Total discharge current (8/20 µs): 20 kA (1x) , overstressed fault mode 3 acc. to IEC 61643-21. Voltage protection level: max. 45 V line-line for nominal discharge current In max. 1400 V line-earth for nominal discharge current In. Impulse reset time: < 500 ms. Insertion loss: ≤ 3 dB at 0 ... 900 kHz in 100 Ω system. Electromagnetic compatibility: EN 61326-3-1:2017. Degree of protection: IEC 60529:2013. Functional safety: IEC/EN 61508:2010. Surge protective devices for low voltage: IEC 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 humidity: max. 95 % , without condensation. Corrosion resistance: acc. to ISA-71.04, severity level G3. Degree of protection: IP20 , after mounting of the insulation spacer. Connection: screw terminals , max. core cross section 1 x 2.5 mm2. Material: Polyamide (PA). Mass: approx. 32 g. Dimensions: 6.2 x 93 x 72.4 mm (0.24 x 3.7 x 2.8 inch) (W x H x D). Mounting: on 35 mm DIN mounting rail acc. to EN 60715:2001. Certificate: KIWA 19 ATEX 0002 X. Marking II 3G Ex ec IIC T6...T4 GcTemperature classT6, T5 or T4 , restrictions see derating tables: . Marking: II 3G Ex ec IIC T6...T4 Gc. Temperature class: T6, T5 or T4 , restrictions see derating tables. Directive conformity: . Directive 2014/34/EUEN IEC 60079-0:2018+AC:2020 , EN 60079-7:2015+A1:2018: . Directive 2014/34/EU: EN IEC 60079-0:2018+AC:2020 , EN 60079-7:2015+A1:2018. UL approval: E501704 E501881. Breakdown voltageUBR30 ... 45 V line-line at 100 V/s acc. to UL 497B < 1000 V at 100 V/µs acc. to UL 497B: UBR. Breakdown voltage: 30 ... 45 V line-line at 100 V/s acc. to UL 497B < 1000 V at 100 V/µs acc. to UL 497B. IECEx approval: . IECEx certificateIECEx KIWA 19.0002XIECEx markingEx ec IIC T6...T4 Gc: . IECEx certificate: IECEx KIWA 19.0002X. IECEx marking: Ex ec IIC T6...T4 Gc. Supplementary information: Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

Specifications

General specifications

Number of protected signal lines2
Topologynon-grounded

Functional safety related parameters

Safety Integrity Level (SIL)SIL 3

Electrical specifications

Connectionprotected area: terminals 4, 5 unprotected area: terminals 2, 3 shielding/grounding: terminal 1 (optional)
Rated current500 mA , restrictions see derating tables UL : 400 mA , restrictions see derating tables Ir
Leakage current< 3 µA at 24 V and 25 °C (77 °F) , line-line
Nominal voltage24 V DC UN
Maximum continuous operating voltage30 V DC Uc
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)1 kA per line (2x) Iimp
Nominal discharge current (8/20 µs)5 kA per line (10x) In
Total discharge current (8/20 µs)20 kA (1x) , overstressed fault mode 3 acc. to IEC 61643-21 Itotal
Voltage protection levelmax. 45 V line-line for nominal discharge current In max. 1400 V line-earth for nominal discharge current In Up
Impulse reset time< 500 ms
Insertion loss≤ 3 dB at 0 ... 900 kHz in 100 Ω system

Conformity

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 conditions

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-71.04, severity level G3

Mechanical specifications

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)
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001

Data for application in connection with hazardous areas

CertificateKIWA 19 ATEX 0002 X
Marking II 3G Ex ec IIC T6...T4 GcTemperature classT6, T5 or T4 , restrictions see derating tables Marking
MarkingII 3G Ex ec IIC T6...T4 Gc
Temperature classT6, T5 or T4 , restrictions see derating tables
Directive conformity
Directive 2014/34/EUEN IEC 60079-0:2018+AC:2020 , EN 60079-7:2015+A1:2018 Directive 2014/34/EU
Directive 2014/34/EUEN IEC 60079-0:2018+AC:2020 , EN 60079-7:2015+A1:2018

International approvals

UL approvalE501704 E501881
Breakdown voltageUBR30 ... 45 V line-line at 100 V/s acc. to UL 497B < 1000 V at 100 V/µs acc. to UL 497BUBR Breakdown voltage
Breakdown voltage30 ... 45 V line-line at 100 V/s acc. to UL 497B < 1000 V at 100 V/µs acc. to UL 497B UBR
IECEx approval
IECEx certificateIECEx KIWA 19.0002XIECEx markingEx ec IIC T6...T4 Gc IECEx certificate
IECEx certificateIECEx KIWA 19.0002X
IECEx markingEx ec IIC T6...T4 Gc

General information

Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
12-month warrantyon all new stock
3-month warrantyon used & refurbished parts
30-day returnsno restocking fee on unused parts
Global shippingFast, tracked delivery worldwide

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