COMMUTATING CHOKE FOR 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; TYPE OF TERMINALS:SCREW CONNECTION; EN 61558-2-20 CHOKE The 4EM single-phase reactors and 4EP three-phase reactors are designed as commutation reactors in combination with frequency converters and DC choppers and they reliably reduce conducted system interference of these loads.