Pepperl Fuchs M-LB-2142
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Quick facts
| Availability | Confirmed on request |
| Category | Devices for Signal Line Protection |
| Lifecycle | active |
| Warranty | 12-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 lines | 2 |
| Topology | non-grounded |
Functional safety related parameters
| Safety Integrity Level (SIL) | SIL 3 |
Electrical specifications
| 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 Ir |
| Leakage current | < 3 µA at 24 V and 25 °C (77 °F) , line-line |
| Nominal voltage | 24 V DC UN |
| Maximum continuous operating voltage | 30 V DC Uc |
| 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) 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 level | max. 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 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 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 humidity | max. 95 % , without condensation |
| Corrosion resistance | acc. to ISA-71.04, severity level G3 |
Mechanical specifications
| 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 |
Data for application in connection with hazardous areas
| Certificate | KIWA 19 ATEX 0002 X |
| Marking II 3G Ex ec IIC T6...T4 GcTemperature classT6, T5 or T4 , restrictions see derating tables | Marking |
| 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 |
| Directive 2014/34/EU | EN IEC 60079-0:2018+AC:2020 , EN 60079-7:2015+A1:2018 |
International approvals
| 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 |
| 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 UBR |
| IECEx approval | |
| IECEx certificateIECEx KIWA 19.0002XIECEx markingEx ec IIC T6...T4 Gc | IECEx certificate |
| IECEx certificate | IECEx KIWA 19.0002X |
| IECEx marking | Ex ec IIC T6...T4 Gc |
General information
| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. |
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