KFD2-STC5-EX120 SAFETY BARRIER

Product Description

The KFD2-STC5-Ex1.20 (Pepperl+Fuchs) is an intrinsically safe isolated barrier / SMART transmitter power supply used in industrial automation to safely transfer 4–20 mA analog signals with HART communication between hazardous and safe areas.

It is commonly installed in DCS/PLC systems, process plants, oil & gas industries, chemical plants, and instrumentation panels where explosion protection and signal isolation are required.

Key Features

• 1-channel intrinsic safety barrier
• Safe isolation between hazardous and non-hazardous areas
• Supports SMART transmitters (HART, BRAIN, Foxboro protocols)
• 4–20 mA analog signal transmission with high accuracy
• Signal splitter function (1 input → 2 outputs in some variants)
• Galvanic isolation for input, output, and power supply
• 24 V DC power supply via power rail or terminals
• SIL 2 (IEC 61508) functional safety compliance
• DIN-rail mount compact industrial design
• Integrated HART communication support with test sockets
• High reliability for continuous industrial operation

Specifications

1. Product Type: Intrinsic Safety Barrier / SMART Transmitter Power Supply
2. Model: KFD2-STC5-Ex1.20 (series variant)
3. Brand: Pepperl+Fuchs
4. Channels: 1-channel
5. Input Type: 2-wire / 3-wire SMART transmitters, 2-wire current sources
6. Output Signal: 0/4–20 mA (isolated)
7. Supply Voltage: 24 V DC (Power Rail system)
8. Communication: HART compatible (bi-directional digital communication)
9. Safety Rating: SIL 2 (IEC/EN 61508)
10. Isolation: Galvanic isolation (input/output / power)
11. Mounting: DIN rail (35 mm standard)
12. Application: Process automation, PLC/DCS systems, hazardous area signal isolation, instrumentation panels, industrial control systems