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M-LB-4242 Surge Protection Barrier
Key Benefits at a Glance
- 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
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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.
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Technical data of M-LB-4242
| Number of protected signal lines | 2 | |
| Topology | non-grounded |
| Safety Integrity Level (SIL) | SIL 3 |
| Connection | protected area: terminals 1', 2' unprotected area: terminals 1, 2 | |
| Leakage current | < 30 µA bei Uc , line-line < 10 nA bei Uc , line-earth | |
| Nominal voltage | 24 V | |
| Maximum continuous operating voltage | Uc | 25.4 V AC and 36 V DC |
| Nominal load current | IL | 0.75 A at 70 °C (158 °F) |
| Series resistance | 1 Ω per line | |
| Impulse discharge current (10/350 µs) | Iimp | 1.5 kA per line |
| Nominal discharge current (8/20 µs) | In | 5 kA per line |
| Max. surge current (8/20 µs) | Imax | 20 kA |
| Total discharge current (8/20 µs) | Itotal | 10 kA |
| Voltage protection level | Up | max. 57 V line-line for nominal discharge current In max. 600 V line-earth for nominal discharge current In |
| Impulse reset time | < 30 ms | |
| Cut-off frequency | fG | 5.8 MHz , line-line |
| Display elements | status display operating state (green) fault indication (red) |
| 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 temperature | -40 ... 80 °C (-40 ... 176 °F) | |
| Storage temperature | -40 ... 80 °C (-40 ... 176 °F) | |
| Relative humidity | max. 95 % , without condensation | |
| Corrosion resistance | acc. to ISA-S71.04, severity level G3 |
| 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 | |||||||||||
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| 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) | ||||||||||
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| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 | ||||||||||
| Certificate | TÜV 22 ATEX 8881 X | |||||||
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| Directive conformity | ||||||||
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II 3G Ex ec IIC T4 Gc| UL approval | E501704 | |||||||
| IECEx approval | ||||||||
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| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. |
