RS PRO Ferrite Ring Round Solid Ring 28.57 mm, For: EMI Suppression 13.77 mm ID 28.5 mm OD

Ferrite sleeves which provide a minimum 8dB of EMI attenuation on data and power cables
Cable to be shielded is passed through the sleeve
Sleeves absorb emitted energy from cables
Will not affect data transmitted through cables
Reduces E.M.I. for compliance with CISPR 22, B.S. 6527, FCC and VDE limits