D4NL-4DFA-B Safety Light Curtain | F3SJ Series Industrial Safety Sensor

The Omron D4NL-4DFA-B is a compact, multi-contact guard locking safety door switch from the D4NL series . It employs a mechanical locking / solenoid release mechanism (power to unlock) with an auxiliary release for emergency unlocking, ensuring safe access control to hazardous machinery .

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Key Specifications Parameter Specification Series D4NL Switch Type Guard Locking Safety Door Switch / Electromagnetic Locking Safety Door Switch Locking Type Mechanical Lock / Solenoid Release (Power to Unlock) Solenoid Voltage 24 VDC Contact Configuration 2NC + 2NC (DPST-NC x 2) Indicator Orange LED, 10 to 115 VAC/VDC drive type Actuator Type Panel Disconnect Connection Method Screw Terminal Conduit Size M20 (1-conduit) Head Material Plastic Release Key Type Standard key (resin), bottom position Key Entry Directions 4 directions Housing Material Plastic, Black/Red Electrical Ratings Parameter Specification Rated Operating Voltage 240 VAC, 250 VDC Rated Current (AC) 3 A at 240 VAC Rated Current (DC) 270 mA at 250 VDC Holding Force (Lock Strength) 1,300 N (approx. 133 kgf) Minimum Applicable Load Gold-clad contacts for micro loads Mechanical & Environmental Parameter Specification Degree of Protection IP67 (Dust-tight, Waterproof) Durability (Mechanical) 1,000,000 operations minimum Durability (Electrical) 500,000 operations minimum Operating Temperature -10°C to 55°C Operating Force 30.59 N (3059 gf) Release Force 15.3 N (1530 gf) Pretravel 9.0 mm Vibration (Malfunction) 10 to 55 Hz, 0.35 mm single amplitude Shock (Malfunction) 80 m/s² min. Shock (Destruction) 1,000 m/s² min. Dimensions (W × H × D) 88.5 mm × 35.5 mm × 95 mm Weight Approx. 221 g