D4NL-2DFA-B

Overview of Omron D4NL-2DFA-B

The Omron D4NL-2DFA-B is a guard lock safety-door switch with a mechanical lock and solenoid operation. It is designed for safety applications requiring a highly reliable locking mechanism to prevent access during hazardous conditions. The unit operates with a 24 V DC solenoid and features two normally closed door contacts and two normally closed lock monitor contacts for dual safety feedback.

Key Features of Omron D4NL-2DFA-B

• Guard lock safety-door switch with mechanical lock
• Solenoid voltage: 24 V DC
• Contacts: 2 NC door contacts + 2 NC lock monitor contacts
• Contact rating: 10 A resistive load
• Holding force: 1300 N (approx. 133 kgf)
• Plastic housing and head material
• Degree of protection: IP67
• Conduit size: G1/2 (2 conduits)
• Slow switch action with high durability (1,000,000 mechanical operations minimum)
• Operating ambient temperature: -10 to 55 °C
• Connection method: Screw terminal
• Lock/release key position: Bottom
• Dimensions: 95 x 35.5 x 88.5 mm (L x H x W)
• Weight: Approximately 370 g
• Includes LED indicator

Technical Specifications

Applications / Use Case

The D4NL-2DFA-B safety-door switch is used in applications requiring secure access control to hazardous areas, such as machinery guarding in manufacturing plants. Its mechanical locking with solenoid release ensures the door cannot be opened without proper authorization, providing safety interlock for personnel protection.