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Pepperl+Fuchs KFD2-STC5-EX1 SMART Transmitter Power Supply, 1-channel SIL 2 isolated barrier for intrinsically safe 4-20mA signals in hazardous areas.
Intrinsically Safe Barriers

Pepperl + Fuchs KFD2-STC5-EX1

In Stock
SKU: KFD2-STC5-EX1
$666.00
Qty
1

Safety Specifications

Safety specifications not available for this product

Product Description

The KFD2-STC5-EX1 is a high-performance SIL 2-rated SMART transmitter power supply designed to provide intrinsically safe analog inputs for 2-wire and 3-wire transmitters in hazardous oil and gas environments. This essential barrier ensures reliable 4-20 mA signal transmission and HART communication while maintaining rigorous protection for Zone 0 and Division 1 applications

Technical Datasheet

Certification & Specification

Country of OriginUnited States (US)

Product Overview

Pepperl+Fuchs KFD2-STC5-EX1 SMART Transmitter Power Supply

The Pepperl+Fuchs KFD2-STC5-EX1 is a specialized isolated barrier designed for intrinsic safety applications. It serves as a robust power supply for 2-wire and 3-wire SMART transmitters, ensuring that sensitive control systems are protected from energy surges in hazardous areas while maintaining high-fidelity signal integrity.

Engineered for versatility in the field, this device supports bi-directional HART communication, allowing for seamless remote diagnostics and configuration of field devices. With a 20 mm housing and a wide operating temperature range of -20 to 70 °C, it provides reliable performance in demanding industrial environments.

Key Features:

✅ Intrinsically safe for Gas (Ga, Gb, Gc), Dust (Da, Db, Dc), and Mining (Ma, Mb)
✅ SIL 2 (Safety Integrity Level) compliant according to IEC/EN 61508
✅ Supports Division 1 and Division 2 installations
✅ 1-channel analog input for 4 ... 20 mA signals
✅ Compatible with 2-wire and 3-wire transmitters or current sources
✅ Dual-mode control-side signal (Source or Sink mode)
✅ High-speed HART communication capability
✅ Compact 20 mm housing width for high-density DIN rail mounting
✅ Flexible power connection via terminals or Power Rail

📦 Package Options:

🔹 Single Unit: KFD2-STC5-EX1 - Standard configuration
🔹 Bulk Order: Contact us for special pricing on quantities of 5+ units

KFD2-STC5-EX1 Technical Specifications:

Edit
Feature Details
Product Type SMART Transmitter Power Supply
Part Number 70124109
Safety Integrity Level SIL 2
Number of Channels 1
Input Signal 4 ... 20 mA (Analog)
Output Signal 4 ... 20 mA (Source or Sink)
Power Supply 24 VDC
Housing Width 20 mm
Connection Type Screw Terminals
Hazardous Area Ratings Div. 1, Div. 2; Zone 0, 1, 2 +1
Operating Temp -20 ... 70 °C (-4 ... 158 °F)
Country of Origin Vietnam
Weight 135 grams

Certifications & Compliance:

🔗 EU-Declaration-of-conformity-1
🔗 UK-Declaration-of-conformity
🔗 SIL 2 – Certified for use in safety-instrumented systems
🔗 Download Datasheet
🔗 Instruction Manual

Applications of KFD2-STC5-EX1:

🔹 Oil & Gas
🔹 Chemical Plants
🔹 Mining
🔹 Labs
🔹 Manufacturing

What’s in the Box?

📦 1x KFD2-STC5-EX1 Transmitter Power Supply
📦 1x Documentation Kit

Ordering & Shipping Details

📦 Lead Time: 1 - 2 Weeks
📍 Shipping Terms: 3 days ground shipment
💳 Payment Options: Credit card, PayPal, Net30

 

FAQs:

What is the difference between source and sink mode on this device?
The control-side signal can be configured to act as a current source (supplying power to the PLC/DCS) or a current sink (the PLC/DCS supplies the power).

Can this device be mounted directly in a Division 2 area?
Yes, the KFD2-STC5-EX1 is suitable for mounting in Division 2 and Gc (Zone 2) environments

Does this barrier support HART communication?
Yes, it is designed for SMART transmitter power supply and supports bi-directional HART communication.

What is the maximum ambient temperature for operation?
This device is rated for operation in temperatures ranging from -20 to 70 °C (-4 to 158 °F).

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