Surge Protection Barrier FN-LB-I Pepperl+Fuchs

Phoenix Contact FN-LB-I: Hazardous Area Surge Barrier

Product Description

Industrial-grade single-channel surge protector for explosive environments. Features 20kA lightning protection and SIL 3 safety rating. Stainless steel housing with IP67 sealing.

Technical Specifications

• Brand: Phoenix Contact
• Model: Surge Protection Barrier
• Full Suffix: FN-LB-I
• Channels: 1
• Surge Protection: 20kA (8/20µs)
• Isolation: 500V from earth
• Safety Rating: SIL 3 (IEC/EN 61508)
• Voltage: ≤48V DC
• Current: ≤250mA
• Temp Range: -30°C to 60°C
• Housing: AISI 316 stainless steel
• Mounting: ½” NPT thread

Installation Guide

Field-mount using ½” NPT thread. Ensure IP67 sealing. Maintain ≥500V isolation from earth. Use in -30°C to 60°C environments only.

Package Contents

• FN-LB-I barrier module
• 0.3m connection cable
• Mounting hardware

Warranty & Shipping

12-month warranty. Ships via FedEx/UPS/DHL worldwide. Delivery in 3-7 days.

Real-World Applications

Oil Refineries: SIL 3 protection for tank level sensors
Chemical Plants: Surge protection for pH analyzers in Zone 1
Gas Pipelines: Lightning protection for remote pressure transmitters

FAQ

Q: What hazardous zones is it approved for?
A: Zone 1/2 (ATEX 1 II 2G)

Q: Maximum cable length supported?
A: Standard 0.3m cable – extend using approved methods

Q: Response time during surge events?
A: 1ns symmetrical, 100ns asymmetrical