Pepperl+Fuchs KFD2-STC5-Ex1 (70124109) | SMART Transmitter Power

Pepperl+Fuchs KFD2-STC5-Ex1 | SMART Transmitter Power Supply – Part No. 70124109

Overview

The KFD2-STC5-Ex1 (70124109) by Pepperl+Fuchs is a 1-channel isolated barrier designed to power and safely transmit signals from 2-wire SMART transmitters or current sources located in hazardous areas. It provides a loop-powered 4–20 mA active output, supports HART bidirectional communication, and ensures safe signal transmission to control systems in the safe area.

Certified for SIL 2 (Systematic Capability SC 3) in accordance with IEC/EN 61508, this device is ideal for safety-related process automation applications and offers 3-way galvanic isolation and DIN rail mounting in a compact 20 mm housing.

Key Features

• Part Number: 70124109

• 1-Channel Isolated Barrier – Compact and space-saving

• Input: 2-wire SMART transmitters or current sources

• Output: Active 4–20 mA loop signal

• Power Supply: 24 V DC (20–30 V range)

• HART Compatible – Supports digital communication

• SIL 2 Certified (SC 3) – Functional safety compliant

• 3-Way Isolation: Input / Output / Power

• DIN Rail Mountable – 20 mm width

• LED Status Indicators – Diagnostic and operational visibility

• IP20 Protection – For safe area installation

Technical Specifications

• Model: KFD2-STC5-Ex1

• Part No.: 70124109

• Input Signal: 4–20 mA (2-wire transmitters)

• Output Signal: Active 4–20 mA

• Voltage Supply: 20 to 30 V DC

• Isolation Voltage: 375 V AC

• Mounting Type: DIN rail (EN 60715)

• Housing Width: 20 mm

• Temperature Range: –20 °C to +60 °C

• Protection Rating: IP20

• Signal Type: Analog with HART passthrough

• Safety Compliance: SIL 2 / SC 3 (IEC/EN 61508)

• Certifications: ATEX, IECEx, UL, CSA (depending on variant)

Applications

• Process Automation – Reliable analog signal interface

• Chemical & Oil Industries – Hazardous area compliance

• Water & Wastewater Facilities – Remote transmitter integration

• Pharmaceutical Plants – Functional safety and precision control

• DCS/PLC Integration – Compatible with standard analog input cards

Why Choose the KFD2-STC5-Ex1 (70124109)?

• Proven safety and reliability with SIL 2 certification

• Full HART compatibility for modern transmitters

• Trusted Pepperl+Fuchs performance for harsh environments

• Compact size, easy to install, low maintenance

Order Now

Pepperl+Fuchs KFD2-STC5-Ex1 (70124109) available and ready to ship. 

NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply