Key Technical Specifications Parameter Specification Series D5B Switch Type Mechanical Touch Switch / Tactile Limit Switch Circuit SPST-NC (Single Pole Single Throw - Normally Closed) Contact Form 1b (NC only; NO specification not included) Actuator Type Hemispheric (domed) plunger - Resin, R3.5 Size M8 (body diameter: 8mm, thread: M8×0.5) Contact Rating 1 mA to 30 mA at 5 to 30 VDC (resistive load) Maximum DC Voltage 30 V Operating Force (OF) 0.74 N to 0.98 N (approx. 75-100 gf) max Pre-Travel (PT) 0.6 mm max Actuator Travel 1.2 mm max Total Travel (TT) 0.9 mm (reference value) Termination Style Cable leads (pre-wired), 5m length Cable Specification Oil-resistant VCTF cable, φ3, 0.08mm² 2-core Mounting Type Panel Mount (threaded body) Ingress Protection (IP) IP67 - Dust tight, waterproof Housing Material Metal Switch Action Slow action (momentary) Electrical Life 5,000,000 operations minimum (at 30 mA 30 VDC resistive load) Mechanical Life 10,000,000 operations minimum Mechanical Operating Frequency 120 operations/minute maximum Electrical Operating Frequency 60 operations/minute maximum Permissible Operating Speed 5 to 500 mm/s Actuator Strength 14.7 N (maximum force actuator can withstand) Contact Resistance (Initial) With 5m cable: 3.1 Ω max Insulation Resistance 100 MΩ min. (at 250 VDC) Dielectric Strength (Same Polarity) 250 VAC, 50/60Hz for 1 min Dielectric Strength (To Ground) 1,000 VAC, 50/60 Hz for 1 min Vibration Resistance (Malfunction) 10 to 55 Hz, 1.5 mm double amplitude Shock Resistance (Destruction) 1,000 m/s² max Shock Resistance (Malfunction) 300 m/s² max Operating Temperature -10°C to +70°C (with no icing) Operating Humidity 35% to 95% Body Length 28 mm Body Diameter 8 mm (M8 thread) Weight (Switch body) Approx. 20 g Weight (Cable) Approx. 10 g/m Appropriate Tightening Torque 2.94 N·m Part Status Active