... Resistance1,000mΩDielectric Strength1,500VLife Expectancy(Mechanical)25,000 for latching, 50,000 for momentLife Expectancy(Electrical)100,000 for ... button500000emergency stop button , key button 100000 circleE6-11 auto-resettingE6-22auto-resettingnormal button SquareE6-11Fauto-resettingE6-22Fauto-resettingrectangleE6-11Jauto-resettingE6-22Jauto-resetting wenzhou push button switch