TDK's series of EPCOS current-compensated ring core powerline double chokes, the B82724J8*N040 series, features a high rated voltage of 800 V_DC or 250 V_AC in continuous operation. It was developed specifically for use as DC link chokes in frequency converters. A further advantage of this series is its outstanding thermal behavior in comparison with conventional types, which means that chokes with high inductance values can be operated with high currents, even at high operating temperature.

These ring core chokes are manufactured using a flame-retardant plastic that is compliant with UL 94 V-0 and certified in accordance with IEC 60335-1, Clause 30 (glow-wire and ball pressure test). In addition, the winding is completely potted, which allows its use in highly polluted environments.