Omron D4NL-2BFA-B Safety Door Interlock Switch

The Omron D4NL-2BFA-B safety door interlock switch provides mechanical interlock with a solenoid lock to monitor and control access to hazardous machinery, preventing operation when a guard door is open. Commonly installed in robotic cells, packaging machines, CNC equipment, and automated production lines, it helps maintain machine safety and supports retrofit or replacement in compliance with safety standards. This model from the D4NL series features a 2NC + 1NO contact configuration, a key-operated actuator head, and a lock that can be configured as power-to-lock or power-to-release depending on the model. It is rated up to 240 VAC / 250 VDC with approximately 3 A (AC-15) or 2 A (DC-13), uses a terminal block connection, and is panel/door mount with IP67 protection for harsh industrial environments. Operating temperature ranges from -10°C to +55°C, and it conforms to ISO 14119 and IEC/EN 60947-5-1 safety standards. For compatibility, common replacements include Omron D4NL-4BFA-B, D4NS-2AF, and D4SL-N2NFA-D.