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Pepperl Fuchs M-LB-Ex-4242 – Surge Protection Barrier
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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-Ex-4242 be shipped?
M-LB-Ex-4242 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-Ex-4242 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-Ex-4242 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-Ex-4242, subject to availability and destination.
• 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
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, Modularity: two-piece, Number of protected signal lines: 2, Topology: non-grounded, Safety Integrity Level (SIL): SIL 3, Nominal discharge current (8/20 µs): 5 kA per line
Specifications
General specifications
| Order code (Pepperl+Fuchs part number) | 70155082 |
| Number of protected signal lines | 2 |
| Topology | non-grounded |
| Lifecycle | Active (current Pepperl+Fuchs product) |
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 | < 10 nA bei Uc , line-earth |
| Nominal voltage | 24 V UN |
| Maximum continuous operating voltage | 25.4 V AC and 36 V DC Uc |
| Nominal load current | 0.5 A at 80 °C (176 °F) IL |
| Series resistance | 1 Ω per line |
| Impulse discharge current (10/350 µs) | 1.5 kA per line Iimp |
| Nominal discharge current (8/20 µs) | 5 kA per line In |
| Max. surge current (8/20 µs) | 20 kA Imax |
| Total discharge current (8/20 µs) | 10 kA Itotal |
| Voltage protection level | max. 65 V line-line for nominal discharge current In max. 1100 V line-earth for nominal discharge current In Up |
| Impulse reset time | < 30 ms |
| Cut-off frequency | 3.5 MHz , line-line fG |
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-71.04, 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) |
| 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 [exsign] II 2G Ex ib IIC T6...T4 Gb [exsign] 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 Ui |
| Current | 500 mA , restrictions see certificate Ii |
| Power | 750 mW , restrictions see certificate Pi |
| Internal capacitance | negligible Ci |
| Internal inductance | negligible Li |
| 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 approval: 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. |
Downloads & documentation
Official documents from Pepperl Fuchs, downloaded directly from the manufacturer.
Data sheets & manuals
| Datasheet M-LB-Ex-4242 | |
| Commissioning Instructions | PDF · 5.5 MB |
CAD & dimension drawings
| EPLAN macro M-LB-Ex-4242 | EDZ · 1.9 MB |
| 3-D model (STEP) M-LB-4282 | STP · 2.8 MB |
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