Key Specifications Parameter Specification Series D4N Switch Type Safety Limit Switch Actuator Top plunger (6mm dia., resin plunger) Operating Mechanism Slow-action Contact Form 2NC (DPST-NC) Switch Function On-Momentary Conduit Size M12 connector (1-conduit) Termination Style M12 Connector Degree of Protection IP67 (Dust-tight and waterproof) Housing Material Plastic (Double-insulated, Class II) Operating Temperature -30°C to 70°C (with no icing) Operating Humidity 95% RH max. Classification of Protection Class II (Double insulation) Electrical Ratings Parameter Specification Rated Operating Voltage (AC) 240 VAC Rated Operating Voltage (DC) 250 VDC Current Rating (AC) 3 A at 240 VAC (Max 10A) Current Rating (DC) 270 mA at 250 VDC Contact Resistance (Initial) 25 mΩ max. Insulation Resistance 100 MΩ min. Impulse Withstand Voltage Between same polarity terminals: 2.5 kV Between different polarity terminals: 4 kV Between terminal and non-live metal part: 6 kV Mechanical Characteristics Parameter Value Operating Force (OF) 6.5 N (663 gf) max. Release Force (RF) 1.5 N (153 gf) min. Pre-Travel (PT) 2.0 mm max. Movement Differential (MD) 1.0 mm max. (reference) Over-Travel (OT) 4.0 mm min. Total Travel (TT) 6.0 mm (reference value) Operating Position (OP) 18.2 ± 0.5 mm Direct Opening Force 20 N min. (EN60947-5-1) Direct Opening Travel 3.2 mm min. (EN60947-5-1) Max. Operating Speed 1 mm/s to 0.5 m/s Permissible Operating Frequency 30 operations/min max. Durability Parameter Value Mechanical Durability 15,000,000 operations min. Electrical Durability 300,000 operations min. Vibration (Malfunction) 10 to 55 Hz, 0.75 mm single amplitude Shock (Destruction) 1,000 m/s² Shock (Malfunction) 300 m/s² Dimensions Parameter Value Body Width 30 mm Body Height 57.5 mm Body Depth 31 mm Mounting Hole Pattern 22 mm × 47 mm Actuator Travel 6 mm Weight Approx. 100-130 g