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JSHD4 and HD5 Enabling Devices and Sentry Safety Relays Manual

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This document describes ABB's three-position enabling devices (JSHD4 and HD5) and Sentry safety relays for safe machine inspection, particularly in robot cells and food and beverage applications. It covers functional safety levels up to Category 4, PL e and SIL3, along with compatible safety contactors and cabling options.

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