Allen-Bradley 440H-S34035 Safety Interlock Switch

The Allen-Bradley 440H-S34035 (440H-S34035) is a safety interlock switch designed for machine safeguarding and industrial automation safety systems. Operating within safety guard monitoring and access control configurations, this safety switch functions to detect the open or closed status of movable physical barriers, safety doors, machine gates, and perimeter enclosures. When a monitored access door or guard is opened during machine operation, the interlock mechanism acts to isolate hazardous motion, safeguarding plant personnel and automated machinery from accidental injury and mechanical collision. Engineered under the Allen-Bradley safety product family, this unit has a net weight of approximately 10 kg and integrates with industrial safety circuits and monitoring devices. Typical installations include packaging machinery, robotic work cells, material handling systems, assembly lines, and specialized processing equipment where interlocked access is mandatory. The switch can be utilized for scheduled maintenance, system repairs, or direct replacement in operational lines requiring genuine Allen-Bradley safety hardware. Verifying system wiring, physical alignment, and environmental requirements ensures dependable protection and reliable machine uptime across industrial environments.