Product Description
Pepperl+Fuchs KFD2-STC4-EX1
The Pepperl+Fuchs KFD2-STC4-EX1 is a high-performance, 1-channel isolated barrier designed for intrinsic safety applications. It functions as a SMART transmitter power supply, providing power to conventional 2-wire 4-20 mA transmitters located in hazardous areas. This device ensures the safe transfer of the analog measurement signal to the safe area, isolating the hazardous and non-hazardous circuits. A key feature is its support for bidirectional HART communication, allowing for seamless configuration and monitoring of SMART devices. The KFD2-STC4-EX1 is easily mounted on a 35 mm DIN rail and is widely used in process automation industries to ensure operational safety and signal integrity.
Technical Specifications:
- Signal Type: Analog Input (4 … 20 mA)
- Channels: 1-channel
- Supply Voltage: 20 … 35 V DC
- Hazardous Area Connection: Terminals 1, 2, 3
- Safe Area Connection: Terminals 7, 8, 9
- Communication Protocol: HART (Highway Addressable Remote Transducer)
- Mounting: 35 mm DIN mounting rail

Pepperl+Fuchs KFD2-STC4-EX1
The Pepperl+Fuchs KFD2-STC4-EX1 is a 1-channel, DIN rail mountable isolated barrier and SMART transmitter power supply. It safely powers 4-20 mA transmitters in hazardous areas and supports bidirectional HART communication.







