Pepperl+Fuchs KFD2-SOT3-Ex2 Switch Amplifier (262108)

The KFD2-SOT3-Ex2 switch amplifier from Pepperl+Fuchs is a 2-channel isolated barrier that safely transfers digital signals from NAMUR sensors or dry contacts in hazardous areas to a safe control zone. It includes dual passive transistor outputs, line fault detection, and supports reversed mode operation via DIP switches. Designed for use in SIL 2 applications and optimized for Power Rail integration, it provides reliable signal transfer in compact form.

Technical Specifications

• Model: KFD2-SOT3-Ex2
• Type: Intrinsically Safe Switch Amplifier
• Input Type: NAMUR sensor or dry contact
• Output Type: 2 passive transistor outputs
• Channels: 2
• Mounting: 35 mm DIN rail (EN 60715)

Input Specifications

• Input Terminals: 1+, 2+, 3- and 4+, 5+, 6-
• Standard: EN 60947-5-6 (NAMUR)
• Open Circuit Voltage: Approx. 10 V DC
• Short-Circuit Current: Approx. 8 mA
• Switching Point: 1.2 … 2.1 mA
• Hysteresis: Approx. 0.2 mA
• Line Fault Detection: Break ≤ 0.1 mA, Short ≥ 6.5 mA
• Pulse/Pause Ratio: Min. 100 µs

Output Specifications

• Output Terminals: 7, 8 (Output I); 8, 9 (Output II)
• Rated Voltage: 30 V DC
• Rated Current: 100 mA (short-circuit protected)
• Signal Level: 1-signal: ≤ 3 V @ 100 mA; 0-signal: ≤ 10 µA off-state
• Response Time: ≤ 200 µs

Power & Configuration

• Supply Voltage: 19 … 30 V DC
• Power Source: Power Rail or terminals 14+, 15-
• Power Dissipation: ≤ 1.1 W
• Configuration: DIP switches
• Visual Indicators: LEDs (per NAMUR NE44)

Galvanic Isolation

• Input/Output: Reinforced insulation (300 Veff)
• Input/Power Supply: Reinforced insulation (300 Veff)
• Output/Power Supply: Basic insulation (300 Veff)

Environmental & Mechanical

• Operating Temperature: -20 … 60 °C
• Degree of Protection: IP20
• Connection: Screw terminals
• Dimensions: 20 x 119 x 115 mm (W x H x D)
• Weight: Approx. 150 g

Certifications & Safety

• Safety Integrity Level: SIL 2 (SC 3) per IEC/EN 61508
• ATEX Marking:
  • II 3(1)G Ex nA [ia Ga] IIC T4 Gc
  • II (1)D [Ex ia Da] IIIC
  • I (M1) [Ex ia Ma] I
• IECEx Marking:
  • Ex nA [ia Ga] IIC T4 Gc
  • [Ex ia Da] IIIC
  • [Ex ia Ma] I
• Certificates: EXA 16 ATEX 0016 X, IECEx EXA 16.0009X
• Max Safe Voltage (Um): 253 V AC (Input & Output)

Key Features & Benefits

✅ Dual NAMUR Inputs. Independently control two outputs from hazardous areas.

✅ Line Fault Detection. Break and short-circuit monitoring built-in.

✅ Short-Circuit Protection. 100 mA outputs with robust transistor drive.

✅ Compact & Durable. Slim 20 mm DIN rail housing.

✅ SIL 2 Compliant. Approved for functional safety-critical applications.

📦 Buy Pepperl+Fuchs KFD2-SOT3-Ex2 from Drive Outlet Megastore

Enhance your intrinsically safe control setup with the KFD2-SOT3-Ex2 – certified, reliable, and ready for dual-channel NAMUR input applications.

In stock now and available with 2–3 days delivery.

Contact us to order today.