Pepperl+Fuchs KFA6-SR2-Ex1.W.LB (103375S) Switch Amplifier
The Pepperl+Fuchs KFA6-SR2-Ex1.W.LB (103375S) is a single-channel switch amplifier designed for isolating and transmitting binary signals from hazardous (Ex) areas to the safe area. It is used to interface mechanical contacts or NAMUR sensors located in explosive zones with control systems, offering both safety and signal amplification.
Technical Specifications
Model: KFA6-SR2-Ex1.W.LB
Part Number: 103375S
Function: Intrinsically safe switch amplifier
Number of Channels: 1 (single-channel)
Input (Hazardous Area):
NAMUR sensor or mechanical contact
Open-circuit voltage: approx. 8 V DC
Short-circuit current: approx. 8 mA
Switching thresholds:
ON: > 2.1 mA
OFF: < 1.2 mA
Output (Safe Area):
Relay output with changeover contact (SPDT)
Max. switching voltage: 250 V AC / 125 V DC
Max. switching current: 2 A
Max. switching power: 500 VA / 60 W
Power Supply:
230 V AC (standard version)
Power consumption: < 2.5 W
Response Time:
ON: < 10 ms
OFF: < 20 ms
Isolation:
Galvanic isolation between input, output, and power supply
Test voltage: 2.5 kV AC
Mounting:
DIN rail mounting (EN 60715)
Housing Material: Polycarbonate
Dimensions (W × H × D): Approx. 20 mm × 119 mm × 115 mm
Protection Class: IP20
Operating Temperature: –20 °C to +60 °C
Storage Temperature: –40 °C to +80 °C
Humidity: Up to 95%, non-condensing
Approvals: ATEX, IECEx, FM, CSA, EAC — certified for use in hazardous areas (Zone 0/1)
Applications
This switch amplifier is used in industries such as petrochemicals, oil and gas, water treatment, and pharmaceuticals. It enables safe integration of field devices like limit switches, proximity sensors, and other binary signal transmitters located in explosive environments with automation and control systems in the safe zone.
Summary
The Pepperl+Fuchs KFA6-SR2-Ex1.W.LB (103375S) switch amplifier provides safe, reliable signal transfer from hazardous zones to the control system. It features relay output, intrinsic safety compliance, and durable construction, making it a trusted choice for binary signal processing in industrial automation.
On this page you will find the user manual for Pepperl+Fuchs KFA6-SR2-Ex1.W.LB. Get detailed technical specifications, installation and operating instructions to ensure optimum performance and reliability.
Manual for Pepperl+Fuchs KFA6-SR2-Ex1.W.LB
https://cpupartnergroup.com/image/pdf/Pepperl%2BFuchs%20KFA6-SR2-Ex1.W.LB.pdf
