1: Type: SZC is a current induction switch; 2: Model series: The maximum capacity of 23 series switches is 0.5A@240V AC/DC; 3: NO stands for normally open, that is, when the through-core current is less than the set value, the switch is opened, and when the current is greater than the set value, the switch is closed;
https://www.amazon.com/Current-Sensing-Normally-Adjustable-SZC23-NO-AL-CH/dp/B07N1P6TWL

