Shape: Flat type (metal ring) Type: Non-illuminated type Protection Class: IP65 oil-proof type Button Shape: Round (flat) Terminal Shape: Screw terminal Rated Insulation Voltage (V): AC/DC600 Type of Operation: Momentary Temperature Rise: 40K or less Insulation Resistance (MΩ): 100 or more (500V) Relative Humidity: 45~85% Operation Ambient Temperature (℃): -20~55 Mounting Hole Diameter (Φmm): 25.5(+0.5~0) Contact Resistance (mΩ): 30 or less Cold / Heat Resistant Temperature (℃): -40~70 Operating Force (N): Approx. 11 (Contact configuration 1a1b) Mechanical Durability: 5 million times Electrical Durability: 1 million times Vibration Resistance (m/s 2): (Durability) 15 Rated Carrying Current (A): 10 (contact part) Operating Frequency (operation/hour): 1800 RoHS directive (corresponding to 10 substances): Correspondence Contact unit: HC type (Can be mounted closely.) Material (ring): Metal Temperature resistance: 40 ° C 93% 96 hours