Pepperl+Fuchs KFD2-SR2-EX2.W | 2-Channel Switch Amplifier,

Pepperl+Fuchs KFD2-SR2-EX2.W | 2-Channel Intrinsically Safe Signal Isolator

Overview

The KFD2-SR2-EX2.W is a dual-channel isolated barrier used for signal transmission from hazardous areas to safe zones. It supports NAMUR sensors or mechanical contacts and outputs via relay contacts. The unit offers line fault detection (LFD), configurable logic, and is compliant with SIL 2 (SC 3) safety standards.

Ideal for chemical, petrochemical, oil & gas, and other industries requiring intrinsically safe signal conditioning.

Key Features

• Dual-Channel Design – Accepts 2 inputs from dry contacts or NAMUR sensors

• Relay Outputs – 2 independent SPDT (Form C) relay contacts

• Power Supply: 24 V DC (19–30 V DC range)

• Line Fault Detection (LFD) – Monitors for open or short circuits

• Configurable Operation – DIP switch settings for logic and LFD

• SIL 2 Compliant – IEC/EN 61508 certified for use in safety systems

• DIN Rail Mounting – Slim 20 mm housing for space-saving installation

• Status LEDs – For input/output and fault indication

Technical Specifications

• Model: KFD2-SR2-EX2.W

• MFG Item Number: 203355

• Input: NAMUR or dry contact

• Output: Relay (max 250 V AC / 2 A or 40 V DC / 2 A resistive load)

• Response Time: ~20 ms

• Power Consumption: ≤1.2 W

• Operating Temp: -20 to +60 °C

• Protection Rating: IP20

• Housing Width: 20 mm

• Mounting: DIN rail

Applications

• Safe signal transfer from hazardous (Ex) areas

• Sensor monitoring in chemical plants

• Safety systems with SIL 2 requirements

• Automation of valves, switches, and alarms in explosive zones

Why Choose KFD2-SR2-EX2.W?

• Proven Pepperl+Fuchs quality and reliability

• Compact dual-channel design saves space

• Full intrinsic safety compliance

• Easy setup with diagnostics and configuration options

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Fast shipping and worldwide delivery available.

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