Pepperl+Fuchs KFA6-SR2-Ex1.W | 230V AC Switch Amplifier, SIL 2,

Pepperl+Fuchs KFA6-SR2-Ex1.W | 1-Channel Intrinsically Safe Switch Amplifier – 230V AC

Overview

The KFA6-SR2-Ex1.W (103374) from Pepperl+Fuchs is a single-channel isolated switch amplifier, designed for use in intrinsically safe circuits. It safely transfers digital signals from NAMUR sensors or dry contacts in hazardous areas to control systems in non-hazardous zones. Featuring a 230 V AC power supply, relay output, and SIL 2 compliance, this device is ideal for process automation and safety applications.

Key Features

• Input Type: NAMUR sensor or dry contact

• Power Supply: 230 V AC (207–253 V AC, 45–65 Hz)

• Output Type: Relay contact (SPST-NO)

• Switching Capacity:

  • 253 V AC, 2 A (cos φ > 0.7)

  • 126.5 V AC, 4 A (cos φ > 0.7)

  • 40 V DC, 2 A (resistive load)

• Line Fault Detection (LFD): Built-in (short/open circuit)

• Mode Selection: DIP switch for Light-on/Dark-on control

• SIL Rating: SIL 2 (per IEC 61508 / IEC 61511)

• Response Time: ~20 ms

Technical Specifications

• Model: KFA6-SR2-Ex1.W

• Part No.: 103374

• Dimensions: 20 mm (W) × 119 mm (H) × 115 mm (D)

• Mounting: DIN rail (EN 60715)

• Protection Class: IP20

• Ambient Temperature: -20 °C to +60 °C

• Connection Type: Screw terminals

• Housing Color: Light grey

Applications

• Process Automation – Signal interface from sensors in explosive zones

• Oil & Gas – Field device relay output isolation

• Chemical Plants – Monitoring valve positions or alarms

• Environmental Monitoring – Safe signal transfer in ATEX zones

Why Choose the KFA6-SR2-Ex1.W?

• Powered directly from 230 V AC

• Compact and DIN rail mountable

• Safe relay output for switching control

• Certified for SIL 2 safety applications

• Includes LFD for continuous reliability

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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