Pepperl+Fuchs K-Series Isolated Barriers & Signal Conditioners

Overview

Pepperl+Fuchs K-series isolated barriers, signal isolators, temperature converters, switching amplifiers, and safety barriers are designed for intrinsic safety and reliable signal conditioning in hazardous areas. Widely used in process automation, oil & gas, chemical, and pharmaceutical industries, these devices provide galvanic isolation, signal conversion, and Ex-protection for field instruments and control systems.

They ensure safe, accurate, and interference-free signal transmission between Zone 0/1/2 hazardous areas and standard control equipment.

Full Model List

• KFD2-STC4-EX1
• KFD2-STC4-EX2
• KFD2-SR2-EX1.W
• KFD2-SR2-EX2.W
• KCD2-STC-EX1
• KFD2-UT2-EX1
• KFD2-UT2-EX2
• KCD2-UT2-EX1
• KFU8-DWB-EX.1D
• KFU8-UFC-1.D
• KFD2-DWB-EX.1D
• KFD2-VR4-EX1.26
• KFD2-EB2.R4A.B
• KFD2-SL2-EX2.B
• KFD2-SCD2-EX2.LK
• KFD2-UFC-EX1.D
• KFD2-ST2-EX2
• KFD2-SR2-EXH.W.LB
• KCD2-STC-EX1.2O
• KCD2-SCD-EX1
• KFD2-STC5-EX2
• KCD2-SR-EX1.LB
• KFD2-STC-EX1.2O
• KCD2-SLD-EX1.1245
• KFD2-STC5-EX1
• KFU8-UFC-Ex1.D
• KFD2-STC4-EX1.20
• KCD2-SCD-1
• KFU8-SR-EX2.W
• KFU8-DW-1.D
• KCD2-RR2-Ex1
• KFD2-EB2-R4A.B
• KCD2-SOT-EX2
• KCD2-SR-EX2
• KCD2-STC-1
• KFD2-SR3-Ex2.2s
• KFD2-SL2-EX1
• KFD2-UT2-2
• KFD2-SR2-EX1.WLB
• KFD2-RR-EX1
• KFD2-EB2
• KFA6-SR2-EX2.W
• KFD2-STC5-EX1.2O
• KFD2-CD-EX1.32
• KFD2-CRG2-1D
• KFD2-STC5-EX1.H
• K-LB-2.30G
• KFD2-CRG2-Ex1.D
• KCD2-STC-Ex1.ES
• KFD2-STC4-1.20
• Z728.H
• KFD2-CD2-Ex1
• KFD2-ST2-Ex1.LB

Key Features

• Intrinsic safety for Ex ia / Ex ib applications in Zone 0, 1, 2
• Complete galvanic isolation between input, output, and power supply
• Supports thermocouple, RTD, current, voltage, switch, and pulse signals
• High accuracy, long-term stability, and low temperature drift
• Slim housing for space-efficient DIN‑rail mounting
• Plug‑and‑play installation with simple wiring
• Global hazardous area certifications (IECEx, ATEX, etc.)
• Reliable protection against surge, interference, and short circuit

Typical Applications

• Process measurement and control systems
• Temperature, signal, and switching signal isolation
• Safety isolation for sensors, transmitters, and field devices
• Oil, gas, petrochemical, and pharmaceutical industries
• PLC/DCS system signal conditioning in hazardous locations