Omron D4NL-4AFA-B Guard Lock Safety Door Switch

The Omron D4NL-4AFA-B Guard Lock Safety Door Switch combines a solenoid guard lock with a 3NC + 1NO interlock to securely control access to hazardous machinery in industrial safety systems. It supports up to 240 VAC or 250 VDC and up to 3 A resistive current, uses a key actuator, and mounts via a terminal-block connection; the unit features a metal head with a durable plastic body and an IP67 protection rating, designed for -10°C to +55°C operation, and it offers power-to-lock or power-to-release operation depending on the model. Commonly installed on safety gates, robotic cells, conveyor systems, assembly lines, and packaging equipment to prevent machine operation when guards are open, it is suitable for replacement and retrofit to ensure reliable interlocking in automated production environments.