This is an insulation accessory for Compact NSX 100/160/250 or EasyPact CVS 100/160/250.::These interphase barriers reinforce insulation level at the power connection points.::They are mandatory for voltages above 500 VAC for both fixed devices and adapters on plug in base.::Interphase barriers are clipped easily between front or rear connection terminals.::They are not compatible with terminal shields.::It is a set of 6 parts.