Pepperl+Fuchs FS-LBF-I1.32 Intrinsically Safe Fieldbus Surge Protector
An intrinsically safe fieldbus surge protector that mounts at the field-device entry and uses an M20 × 1.5 connection.
Product Overview
Pepperl+Fuchs FS-LBF-I1.32 is a FieldConnex surge protector for intrinsically safe fieldbus systems operating under the FISCO or Entity model. It is designed for PROFIBUS PA or FOUNDATION Fieldbus installations.
The device screws directly onto the terminal box or field-device housing through an M20 × 1.5 entry. It limits transient overvoltage by diverting the increased current and controlling the voltage during the surge.
Installation must retain the hazardous-area verification, fieldbus entity assessment, enclosure entry and grounding arrangement; the surge protector is not an isolating barrier.
Performance
Fieldbus continuity
Protects the connected fieldbus path while preserving the communication circuit.
Transient protection
Diverts indirect lightning and switching surges away from the field equipment.
Hazardous-area integration
Maintains the approved Ex ia fieldbus application when installed within the documented parameters.
Technical Details
About IndustryParts
https://www.industryparts.com/Exact-model support for FS-LBF-I1.32
IndustryParts keeps the complete FS-LBF-I1.32 identity, requested quantity and installed-system evidence together so the proposed supply can be compared with the actual application before dispatch.
System Integration
Complete the FISCO or Entity verification for the associated apparatus and field device.
Observe separation distances, grounding and IEC/EN 60079-14 installation requirements.
Replace, rather than repair, a damaged surge protector.
Applications
Application boundary
Keep the FISCO or Entity calculation with the loop dossier.
Hazardous-area control
Preserve certificates, markings and ambient conditions for the installed location.
Maintenance rule
Do not modify the device; replace it with the exact approved model when defective.
FAQ
Q01Why is the letter I important in FS-LBF-I1.32?
The I1.32 code identifies the intrinsically safe execution; it must not be confused with the D1.32 flameproof variant.
Q02What thread must be available for FS-LBF-I1.32?
The FS execution uses an M20 × 1.5 connection, unlike the FN execution that uses 1/2 NPT.
Q03Which networks can use FS-LBF-I1.32?
The documented application is intrinsically safe PROFIBUS PA or FOUNDATION Fieldbus under the FISCO or Entity model.
Q04Can FS-LBF-I1.32 replace the need for intrinsic-safety verification?
No. Entity or FISCO parameters and the associated apparatus still require documented verification.
Q05What evidence should accompany a FS-LBF-I1.32 order?
Provide the complete model, fieldbus type, device-entry thread, zone, certificate basis, loop drawing and enclosure photographs.
