COMMUNICATION CHOKE FOR POWER CONVERTER, PHASES: 3, UN1(V): 400, ITHMAX 1(A) / F1(HZ): 20 / 50, I LN (A): 18, UK(%): 4, LN(MH): 1.12, TA/ISOKL: 40 / B, IP00, CONNECTION: SCREW CONNECTION, EN 61558-2-20 >CHOKE< The single-phase chokes 4EM and three-phase chokes 4EP are designed as commutating chokes in conjunction with frequency converters and DC controllers and reliably reduce line-borne mains disturbances of these consumers.