Model PSR-FSP is designed to operate with fail-safe controls in process applications. The safe coupling relay can be used in applications up to a Safety Integrity Level (SIL) 3 requirement, according to IEC 61508. The process safety relay is compatible with “test pulses” that occur on safe PLC/DCS outputs. Inrush requirement is limited for safe PLC/DCS output compatibility and it has a built-in fuse for the safe output contact.

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