Pepperl+Fuchs KFD2-STC4-Ex2 SMART Transmitter Supply

A two-channel isolated barrier that supplies two-wire SMART transmitters in hazardous areas and transfers 0/4–20 mA signals to the safe area.

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Hazardous-area process instrumentation and signal junction equipment — Application image — product appearance and configuration vary.

Data policy: specifications below are summarized from the referenced manufacturer source. Availability, price and exact configuration are confirmed only against an RFQ.

Manufacturer-verified details

Channels: 2
Supply: 24 V DC via terminals or Power Rail
Field input: Two-wire SMART transmitters
Safe-area output: 0/4–20 mA
Functional safety: Up to SIL 2 per IEC/EN 61508

Before requesting a quote

Confirm transmitter type and two-wire loop requirements.
Verify Ex approvals and entity parameters against the field device.
Check whether the control-system analog input is sourcing or sinking.
Review Power Rail, terminal and HART communication requirements.

Typical applications

Hazardous-area pressure transmittersFlow and level loopsDCS analog input isolation

Important selection note: Pepperl+Fuchs has newer STC5 options with selectable sinking/source output. Evaluate STC5 for new designs instead of assuming direct interchangeability.

Technical reference: Pepperl+Fuchs official datasheet ↗