Omron D4NL-1AFG-B Guard Lock Safety Door Switch

The Omron D4NL-1AFG-B Guard Lock Safety Door Switch is a 1NC/1NO interlock that monitors and locks safety doors in machine safety systems, featuring electromagnetic guard locking to prevent access during hazardous operation. It runs on 24 VDC (solenoid) and uses a separate actuator key system for controlled door release, with an IP67-rated rugged housing suitable for panel or surface mounting in robotic cells, packaging lines, CNC equipment, and other automated production environments. The device provides reliable interlocking and guarding functions that stop hazardous machine activity when a door is opened, and it is designed for an industrial control circuit switching capacity with ISO 14119 safety compatibility; cable entry can be pre-wired or terminal type depending on the model. Common replacements include Omron D4NL-2AFG-B, D4NS-1AF, and D4SL-N2RFA-D.