Number of poles 3PDescription of protection poles 3DNominal current [In] 250 A at 40 °C onRated operating voltage [Ue] 690 V AC 50/60 HzGrid type ACGrid frequency 50/60 HzIsolation function Applicable Conforms to TM-DClass of use AC[Icu] Rated ultimate short-circuit breaking capacity 85 kA Icu on 22..