Aisikai Industrial PC Class 400A ATS (SKT1-400) Specification TableParameter / Engineering FeatureTechnical Specification DetailsOfficial Brand / ManufacturerAISIKAI ElectricModel Designation CodeSKT1-400 / SKT1-400A (Large Industrial Frame)ATS Equipment ClassificationPC Class (Unified mechanical isolation architecture)Utilization Load CategoryAC-33A (Optimized for frequent under-load inductive switching)Agreed Thermal Current ($I_{th}$)400 ARated Operational Current ($I_e$)400 A (Heavy-gauge internal copper busbars)Pole Configurations ($P$)3-Pole (3P) or 4-Pole (4P with fully isolated Neutral)Rated Insulation Voltage ($U_i$)1000 VRated Impulse Withstand ($U_{imp}$)12 kVRated Operational Voltage ($U_e$)AC 400 V / AC 440 V (50 Hz / 60 Hz)Rated Short-Time Withstand ($I_w$)36 kA (1-Second safety hold constraint)Rated Short-Circuit Making ($I_{cm}$)75.6 kA (Peak transient fault capacity)Switching Transition Delay Time$\approx 0.8 \text{ to } 1.2 \text{ Seconds}$ ($I \to 0 \to II$)Control Motor Drive VoltageAC 220 V NominalMechanical / Electrical Lifespan$\ge 5,000$ complete operations under loaded states