What kind of appliances are these? What role does it play? Not how the measured current clamp meter?
12 is a 220V with air leakage protection switch, right?. The 3 is a 380V air switch. Play the role of power on or off.
The relay is used as protective and breaking circuit, and the current parameter is usually marked on the top, and the unit is A.
1: monolithic leakage protection, K pass, 2: monolithic current protection, K shutdown, 3: three piece, three-phase current protection, K switch1_ automatic unloading gate leakage phenomenon2_ working current exceeds the rated current automatic unloading gate3_ 1: three-phase current balance automatic discharge gate 2: three-phase current exceeds the rated current automatic unloading gateThe clamp type table. Q: according to your figure _ device must AC clamp meter a! [safety test: three-phase A, B, C working current]Recommendations: 1 and 2 switch _ replaced two into two: Ayumi with good performance 'protector'!!
