Product Description
Pepperl+Fuchs KFD2-SR2-EX1.W.LB Isolated Barrier
The Pepperl+Fuchs KFD2-SR2-EX1.W.LB (Part No. 203351) is a highly reliable 1-channel isolated barrier from the industry-leading K-System series. Designed specifically for intrinsic safety applications, this switch amplifier transfers digital signals from NAMUR sensors or dry contacts located in hazardous areas to safe areas. It features a relay contact output, configurable line fault detection (LFD), and operates on a 24 V DC power supply via Power Rail. Fully certified with INMETRO (Segurança Compulsório) and rated up to SIL 2 according to IEC 61508, this module ensures maximum operational safety and signal integrity in demanding industrial automation environments.
Technical Specifications:
- Brand: Pepperl+Fuchs
- Model: KFD2-SR2-EX1.W.LB
- Part Number: 203351
- Product Type: Isolated Barrier / Switch Amplifier (K-System)
- Number of Channels: 1-Channel
- Input: NAMUR sensor or mechanical contact (intrinsically safe)
- Output: Relay contact
- Power Supply: 19 … 30 V DC (via Power Rail)
- Safety Integrity Level (SIL): Up to SIL 2 acc. to IEC 61508
- Key Features: Line fault detection (LFD), Reversible mode of operation
- Certifications: INMETRO (Segurança Compulsório), ATEX, IECEx

Pepperl+Fuchs KFD2-SR2-EX1.W.LB Isolated Barrier
Shop the Pepperl+Fuchs KFD2-SR2-EX1.W.LB (Part No. 203351) 1-channel isolated barrier. This high-performance K-System switch amplifier features 24V DC operation, relay output, and line fault detection for secure and reliable intrinsic safety in industrial automation.





