... 50Hz1.Descriptions and applications:KYN61-40.5 armored metal enclosed switch cabinet is the latest product developed by our company using ... short circuit closing currentKA20,25,31.525,31.5,40Rated thermal stability current (4s)KA50,63,8063,80,100Power frequency withstand ... 50Hz1.Descriptions and applications:KYN61-40.5 armored metal enclosed switch cabinet is the latest product developed by our company ...