OMRON D4NL-4HFA-B Safety Door Switch

The OMRON D4NL-4HFA-B (D4NL-4HFA-B) is a safety door switch designed for industrial machine safety and access guarding applications. As part of the OMRON D4NL series within industrial safety door switches, this component is utilized across automated production machinery, robotic cells, assembly lines, and industrial enclosures. Its primary function is to monitor the status of protective safety doors, gates, and movable guards, helping to ensure that hazardous machine movements are arrested or prevented whenever an access guard is open or improperly secured. Built for demanding factory environments, the unit delivers dependable interlock monitoring to protect operators and maintenance personnel from moving machinery and hazardous production processes. It is intended for maintenance, repair, and direct replacement workflows where accurate part-number identification is essential for maintaining plant safety compliance and system reliability. With a recorded weight of 10 kg, it integrates into compatible industrial safety interlock setups. Prior to ordering and installation, please verify the required part number, mechanical configuration, and electrical connection specifications against your equipment documentation and safety circuit requirements.