As many of you may know, tracking in AC/DC Power Adapters — Desktop & Wall-Mount refers to a phenomenon where moisture or dust accumulates around the plug inserted into an outlet, causing current to flow between the plug terminals. This results in repeated spark discharge, which carbonizes the surface of the insulating resin and forms a conductive carbon path (track), eventually leading to ignition.

In general, as shown in the following diagram, countermeasures against this tracking phenomenon frequently involve placing an insulating cap at the base of the plug and increasing the height of the base to prevent short circuits.

Since this countermeasure is so well known, customers occasionally ask, “Are your AC/DC Power Adapters — Desktop & Wall-Mount equipped with tracking prevention?

In our company, there have been cases in the past where insulating caps caused issues when obtaining safety certifications such as UL. Therefore, for wall mount types of AC/DC Power Adapters — Desktop & Wall-Mount, we have long adopted a method to prevent tracking by designing grooves between the two AC plug terminals.

This method performs as well as the insulating cap type and, naturally, satisfies PSE and other plug standards such as UL and BSMI, so you can use our products with confidence.