FN-LB-I 1-Channel Surge Protection Isolator
Single-channel, field-mounted module, ½ NPT thread, stainless steel housing.
- Original Factory Genuine, Tenfold Compensation for Counterfeits
- Full Machine Warranty, Lifetime Maintenance
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Pepperl+Fuchs FN-LB-I 1-channel surge protection isolator, single-channel, field-mounted module, ½ NPT thread, stainless steel housing, maximum surge current (8/20 µs) 20 kA.
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 | 1 |
| Functional safety parameters | |
| Safety Integrity Level (SIL) | SIL 3 |
| Power Supply | |
| Rated Voltage | ≤ 48 V |
| Rated current | ≤ 250 mA |
| Leakage current | ≤ 5 µA |
| On-state voltage | ≤ 85 V |
| Insulation to earth | ≥ 500 V breakdown voltage |
| Electrical Data | |
| Total discharge current (8/20 µs) | 20 kA |
| Conformity | |
| Degree of protection | IEC 60529:2001 |
| Ambient Conditions | |
| Ambient Temperature | −30 … 60 °C (−22 … 140 °F); observe the EC type-examination certificate when used in hazardous areas |
| Mechanical parameters | |
| Housing material | Stainless steel 1.4401 (AISI 316), fully polished surface |
| Degree of protection | IP67 |
| Length | 0.3 m |
| Weight | approx. 200 g |
| Dimensions | AF22 x 77 mm (0.9 x 3 inch) |
| Across flats | 22 |
| Installation Method | NPT1/2 thread |
| Hazardous area application data | |
| EU Type Examination Certificate | PTB 00 ATEX 2175 |
| Marking | II 2G EEx ia IIC T6 |
| Voltage | 50 V |
| Max. leakage current | 10 kA line-to-earth (common mode), 5 kA line-to-line (differential mode) according to IEC 60-2 |
| Symmetrical | 1 ns |
| Asymmetric | 100 ns |
| Bandwidth | ≥ 40 kHz |
| Directive 2014/34/EU | EN 60079-0:2012+A11:2013, EN 60079-11:2012 |
| International approvals | |
| Control drawing | 116-0187 (cCSAus) |
| General information | |
| Supplementary information | The EC type-examination certificate, declaration of conformity, certificate of conformity and instruction manual must be observed within the applicable scope. For information, see www.pepperl-fuchs.com. |
- Single Channel
- Field-mounted module
- ½ NPT thread
- Stainless steel housing
- Maximum surge current (8/20 µs) 20 kA
- 500 V insulation to earth
- Suitable for hazardous areas
- Complies with IEC/EN 61508, up to SIL 3
Petrochemical Plant
Lightning and overvoltage protection for instrument signal circuits
Power Energy System
Surge protection for power and signal lines
Process Automation
Surge protection for fieldbus trunk and spur lines
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