1、 Purpose and Characteristics
The opening and closing time (metal short-circuit time) of high-voltage circuit breakers is a key time parameter that affects the breaking capacity of circuit breakers, and there is still no good solution at home and abroad. The F11-Y delayed quick action auxiliary switch with delayed closing contacts solves the problem of circuit breaker opening and closing time, with a simple and reliable principle. Complies with the requirement of improving auxiliary switches to enable circuit breakers to have "self-defense function" in the power system. The F11 auxiliary switch has universal applicability to hydraulic/pneumatic mechanisms and is currently an optimal and practical solution.

2、 Usage conditions
a、 Surrounding air temperature: -40 ℃~+40 ℃;
b、 Altitude: The installation location shall not exceed an altitude of 3000m;
c、 The humidity conditions are as follows: the average relative humidity measured within 24 hours shall not exceed 95%; The average value of water vapor pressure measured within 24 hours shall not exceed 2.2KPa; The average monthly relative humidity does not exceed 90%; The average monthly water vapor pressure shall not exceed 1.8KPa;
d、 Vibration acceleration not exceeding 15m/s ²;
e、 The surrounding air is not significantly polluted by dust, smoke, corrosive and flammable gases, vapors, or salt spray.