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Allen-Bradley 440R-D22R2 Guardmaster Dual Input Safety Relay
Allen-Bradley 440R-D22R2 Guardmaster Dual Input Safety Relay
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Description:
The Allen-Bradley 440R-D22R2 Guardmaster Dual Input Safety Relay is a safety-rated device used in machine safety control systems to monitor dual-channel safety devices such as emergency stop buttons, safety gates, and light curtains. It provides dual-channel safety monitoring with 2 normally open safety contacts and a normally closed auxiliary contact, powered by 24V DC, and supports manual or automatic reset. This Guardmaster relay is rated Category 4, SIL 3, and PLe capable, mounts on a DIN rail, and operates from -5 to 55 °C (23 to 131 °F). Common replacements include 440R-S12R2, 440R-D22R3, and 440R-N23132.
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