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JSR3T Expansion Relay Manual

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This document is the original manual for the ABB/Jokab Safety JSR3T expansion relay, which provides delayed safety outputs (0.5 to 10 seconds) when connected to a compatible safety relay. It covers technical specifications, safety levels (Category 4/PL e, SIL 3), wiring examples, installation precautions, and regulatory compliance for applications like emergency stop Category 1 per EN ISO 13850.

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