Switching devices for power converter

A no-contact switch is provided that is configured to change the state of a power converter in a photovoltaic system. The no-contact switch has a mechanical section that is movable from a first position to a second position, and may include a rotary dial or a sliding tab. The mechanical section may be mounted to and penetrate an enclosure. Each of the first and second positions may please a different area of the tab or dial in proximity to a sensor. The sensor may be placed in an interior of the enclosure, and may be configured to sense the change of the position of the mechanical section. A controller may be configured to read the signal that the sensor outputs and, according to the signal, determine an electrical state of the power converter and/or change the state. 提供种非接触开关，被配置成改变光伏系统中的功率转换器的状态。所述非接触开关具有机械部分，所述机械部分能从第位置移动到第二位置，并且所述非接触开关可以包含旋转拨盘或滑动突片。所述机械部分可以安装到外壳并且穿透所述外壳。所述第位置和第二位置中的每个可以取悦接近于传感器的所述突片或拨盘的不同区域。所述传感器可以放置于所述外壳的内部中，并且可以被配置成感测所述机械部分的位置的所述改变。控制器可以被配置成读取所述传感器输出的所述信号，并且根据所述信号确定所述功率转换器的电气状态且/或改变所述状态