SIRIUS 3SB3是一种用于板前安装，有金属和塑料两个系列。
塑料系列为扁平外形，有圆形和方形。金属系列只有圆形。扁平外形，使塑料系列和薄膜面板组合非常协调，并且容易清洁。按钮和带灯按钮的操作面为凹形。指示灯的镜片为凸形。
结构：一个控制装置由三个部分组成，板前的按钮头或灯罩。板后的安装基座和触点块或灯座。
接线方式有三种：螺丝接线端子，笼线接线端子，焊脚连结
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