Key Specifications Parameter Specification Series D4E Switch Type Small sealed limit switch (Enclosed switch) Actuator Pin plunger (7.8 mm dia., stainless-steel plunger) Contact Form SPDT (Single-Pole, Double-Throw) Switch Function On-Momentary Termination Style DC Connector Degree of Protection IP67 (Dust-tight and waterproof) Housing Material Zinc alloy Operating Temperature -10°C to 80°C (with no icing) Classification of Protection Class II (Double insulation, grounding not required) Electrical Ratings Parameter Specification Rated Voltage (AC) 125 VAC Rated Voltage (DC) 30 VDC Current Rating (AC/DC) 100 mA (0.1 A) Contact Resistance (Initial) 15 mΩ max. Insulation Resistance 100 MΩ min. (at 500 VDC) Dielectric Strength Between same polarity terminals: 1,000 VAC for 1 min Between terminals and non-live-metallic part: 1,500 VAC for 1 min Impulse Withstand Voltage Between terminals and non-live-metallic part: 2.5 kV Mechanical Characteristics Parameter Value Operating Force (OF) 11.77 N (1200 gf) max. Release Force (RF) 4.90 N (500 gf) min. Pre-Travel (PT) 1.5 mm max. Movement Differential (MD) 0.1 mm (reference value) Over-Travel (OT) 3.0 mm min. Operating Position (OP) 25.4 ± 0.8 mm Max. Operating Speed 0.1 mm/s to 0.5 m/s Permissible Operating Frequency Electrical: 30 operations/min max. Mechanical: 120 operations/min max. Durability Parameter Value Mechanical Durability 10,000,000 operations min. Vibration (Malfunction) 10 to 55 Hz, 1.5 mm double amplitude Shock (Destruction) 1,000 m/s² max. Shock (Malfunction) 300 m/s² max. Dimensions Parameter Value Body Dimensions (W x H x D) 18 mm × 57 mm × 32.9 mm Mounting Hole Pitch 33 mm Weight Approx. 109.5 g