... voltage Uc (V~) 385 420 Rated Current 5KA-100KA Feature :1. Technology of Inner overcurrent and over heat protection , temperature control ... break circuit .2. Module design, convenienct installing, replace online.3. small leak current, quick response time, low residual voltage.4 ... New technology, high energy, clearence discharge pole (N-PE). Over/Under Voltage Protector