Pepperl+Fuchs KFD2-STC4-Ex1 Isolated Barrier
Pepperl+Fuchs KFD2-STC4-Ex1 Isolated Barrier is a high-performance intrinsically safe signal isolator designed to provide safe signal transmission between hazardous and safe areas. It ensures reliable electrical isolation, signal conditioning, and protection for field instruments while maintaining system integrity. Ideal for process automation, oil & gas, chemical plants, and other hazardous industrial environments.
BRAND
Pepperl+Fuchs
TYPE
Isolated Barrier
PART NO.
Isolated Barrier KFD2-STC4-Ex1
MODEL
KFD2-STC4-Ex1
Full Technical Specifications ▶
| Parameter | Value / Description |
|---|---|
| BRAND | Pepperl+Fuchs |
| TYPE | Isolated Barrier |
| PART NO. | Isolated Barrier KFD2-STC4-Ex1 |
| MODEL | KFD2-STC4-Ex1 |
| MANUFACTURER | Pepperl+Fuchs |
| Signal Type | Analog Input |
| Safety Integrity Level (SIL) | Safety Integrity Level (SIL) |
| Supply Voltage | 20–35 V DC (24 V DC Nominal via Power Rail) |
| Voltage Rating | 20–35 V DC |
| Power Consumption | 1.8 W |
| Power Dissipation | 1.4 W |
| Input Signal | 0/4–20 mA |
| Supported Devices | 2-wire & 3-wire SMART Transmitters, 2-wire SMART Current Sources |
| Field Side Connection | Terminals 1+, 2-, 3 or 5-, 6+ |
| Control Side Connection | Terminals 7-, 8+, 9 |
| Power Supply Connection | Power Rail or Terminals 14+, 15- |
| Voltage Drop | ≤2.4 V at 20 mA |
| Input Resistance | ≤64 Ω (Terminals 2-,3); ≤500 Ω (Terminals 1+,3 with 250 Ω Load) |
| Available Voltage | ≥16 V at 20 mA (Terminals 1+,3) |
| Load | 0–800 Ω at 20 mA |
| Ambient Temperature | -20°C to +60°C (-4°F to +140°F) |
| Frequency Range | Field to Control: 0–7.5 kHz (-3 dB); Control to Field: 0.3–7.5 kHz (-3 dB) |
| Mounting | 35 mm DIN Rail (EN 60715:2001) |
| Degree of Protection | IP20 |
| Connection Type | Screw Terminals |
| Application | Intrinsically safe signal isolation and transmission for SMART transmitters in hazardous areas |
| IEC | IEC/EN 61508, EN 60715:2001 |
| Made In | Germany |
| REF NO | 1459 |
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