Comment by quickthrowman

Instantaneous trip will kick in with 3-5x over current which happens in nanoseconds. Thermal overloads take longer so they don’t nuisance trip on inrush motor current (not applicable to single-phase motors due to start/run capacitors) Also, what chip is taking in line voltage single-phase AC at 120V or 208V or 277V or 480V?

All of the semiconductors I am familiar with run on low voltage DC with an inverter between AC and DC.