The Pro-Tek5 PTI-45101001 Systems Isolator affords a convenient method of creating 5KV isolation to equipment located in an Ethernet cabling system. The Pro-Tek5 Systems Isolator provides IEEE802.3 compliant return loss and insertion loss performance while meeting the most stringent isolation requirements. Reinforced insulation is used to achieve a high level of isolation for applications with working voltages up to 300V.