M-LB-Ex-2615 3-Channel Surge Protection Isolator
Surge protection for 3 signal lines, rated voltage 1 V DC, surge protection isolator for ungrounded signal lines, maximum surge current (8/20 µs) 20 kA.
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Pepperl+Fuchs M-LB-Ex-2615 3-channel surge protection isolator, surge protection for 3 signal lines, rated voltage 1 V DC, surge protection isolator for ungrounded signal lines, maximum surge current (8/20 µs) 20 kA, screw terminal connection.
For lightning and switching overvoltage protection of signal lines, power lines and fieldbus lines between hazardous areas and safe areas, DIN rail or field enclosure mounting, directly connected in series in instrument loops, DCS/PLC I/O and bus trunk/spur lines.
| Parameter Name | Technical Specifications |
|---|---|
| General specifications | |
| Number of protected signal lines | 3 |
| Topology | Ungrounded |
| Functional safety parameters | |
| Safety Integrity Level (SIL) | SIL 3 |
| Electrical Data | |
| Connection | Protected area: terminals 4, 5, 6, unprotected area: terminals 1, 2, 3 |
| Rated current | 400 mA, for restrictions see derating table |
| Leakage current | < 10 µA at 1 V and 25 °C (77 °F), line-to-line |
| Rated Voltage | 1 V DC |
| Maximum continuous operating voltage | 6 V DC |
| Series resistance | ≤ 3 Ω per line |
| Impulse withstand 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 (2 times) |
| Nominal discharge current (8/20 µs) | 5 kA per line (10 times) |
| Total discharge current (8/20 µs) | 20 kA (1x), overstress failure mode 3 according to IEC 61643-21 |
| Voltage protection level | max. 12 V line-to-line (at rated discharge current In), max. 2000 V line-to-ground (at rated discharge current In) |
| Impulse reset time | < 500 ms |
| Insertion loss | ≤ 3 dB at 0 … 170 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 |
| Low-voltage surge protective device | IEC 61643-21:2000+A1:2008+A2:2012 |
| Ambient Conditions | |
| Ambient Temperature | −40 … 80 °C (−40 … 176 °F), note that the temperature range is subject to derating, see derating section |
| Storage Temperature | −40 … 85 °C (−40 … 185 °F) |
| Relative Humidity | Max. 95 %, non-condensing |
| Corrosion resistance | According to ISA-71.04, severity level G3 |
| Mechanical parameters | |
| Degree of protection | IP20 with insulating separator installed |
| Connection | screw terminals, max. core cross-section 1 x 2.5 mm2 |
| Material | Polyamide (PA) |
| Weight | approx. 30 g |
| Dimensions | 6.2 x 93 x 71, 8 mm (0.24 x 3.7 x 2.8 inch) (width × height × depth) |
| Installation Method | Mounts on 35 mm DIN mounting rail in accordance with EN 60715:2001 |
| Hazardous area application data | |
| EU Type Examination Certificate | KIWA 19 ATEX 0003 X |
| Marking | II 2(1)G Ex ia [ia Ga] IIC T6 … T4 Gb, [exsign] II (1)D [Ex ia Da] IIIC, [exsign] I (M1) [Ex ia Ma] I |
| Temperature class | T6, T5 or T4, restrictions see derating table |
| Voltage | 30 V |
| Current | 400 mA, for restrictions see derating table |
| Power | 1.4 W, see derating table for restrictions |
| Internal capacitance | Negligible |
| Internal inductance | 30 µH |
| Directive 2014/34/EU | EN IEC 60079-0:2018+AC:2020, EN 60079-11:2012, IEC 60079-11:2023 |
| International approvals | |
| IECEx certificate | IECEx KIWA 19.0003X |
| IECEx marking | Ex ia [ia Ga] IIC T6 … T4 Gb, [Ex ia Da] IIIC, [Ex ia Ma] I |
| General information | |
| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals and manuals within the applicable scope. For related information, see www.pepperl-fuchs.com. |
- Surge protection for 3 signal lines
- Rated voltage 1 V DC
- Surge protection isolator for ungrounded signal lines
- Maximum surge current (8/20 µs) 20 kA
- Screw terminal wiring
- DIN rail mountable
- Complies with IEC/EN 61508, up to SIL 3
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