Omron D4NL-1DFA-B Guard Lock Safety Door Interlock

The Omron D4NL-1DFA-B Guard Lock Safety Door Interlock is a solenoid-locked guard switch designed to monitor and control access to hazardous machine areas within industrial safety systems. It is commonly installed in safety gates, robotic cells, packaging machines, and automated production lines to prevent operation when guards are open and to support maintenance and safety compliance. Key specifications include contact configuration 2NC + 1NO (typical), locking mechanism solenoid guard lock, operation mode power-to-lock / power-to-release (model dependent), rated voltage up to 240 VAC / 250 VDC, rated current up to 3 A (resistive), actuator type key actuator, mounting type chassis mount, connection type terminal block, protection rating IP67, operating temperature −10°C to +55°C, and housing with a metal head and durable plastic body. The part is manufactured by Omron and is used across robotic work cells, conveyors, and packaging equipment to secure access and ensure safe machine operation.