PRODUCT DESCRIPTION
PEPPERL & FUCHS 420994 (KFD2-SR2-EX1.W) - Intrinsic Safety Barrier - Switch Repeater
The PEPPERL & FUCHS 420994 (KFD2-SR2-EX1.W) is a 2-channel intrinsic safety barrier from the K-System series, engineered to provide galvanic isolation and signal conditioning for discrete inputs originating from hazardous areas. It functions as a switch repeater, converting signals from NAMUR sensors or mechanical contacts into safe-area relay outputs, ensuring compliance with explosion protection requirements in process automation and safety-critical applications.
Technical Specifications:
- SERIES/FAMILY: K-System, KFD2 Series
- COMPONENT TYPE: Intrinsic Safety Barrier, Switch Repeater
- ELECTRICAL SPECS: 20-35VDC Supply Voltage, 2 x SPDT (Single Pole Double Throw) Relay Outputs, 250VAC/2A or 30VDC/2A Switching Capacity
- INTERFACE/CONTROL: 2-channel input for NAMUR sensors or dry contacts, 2-channel relay output
- HAZARDOUS AREA CERTIFICATION: [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I, [Ex ib Gb] IIB for connected field devices
- SAFETY INTEGRITY LEVEL: Up to SIL 2 (IEC 61508)
- ENVIRONMENTAL/MOUNTING: DIN-rail mounting, IP20 protection, -20°C to +60°C Operating Temperature
- RESPONSE TIME: < 20 ms
- COMPATIBILITY/APPLICATION: Process control systems, safety instrumented systems, discrete signal interfacing in hazardous environments