... used for machinery equipment, electrical equipment, electrical closet, automation keylock push button switch Specifications: Contact Rating10A, 250V ACContact Resistance ≤50mΩInsulation Resistance≥1 ... for DCLife Expectancy(Electrical)300,000 for latching, 1,000,000 for momentary Mechanical Configuration:latching&momentaryPosition2 positions or 3 positions key push button switch