9902.16.88 - Arc fault circuit interrupters, including dual function arc/ground fault circuit interrupters (provided for in subheading 8536.30.80)

This HTS category, 9902.16.88, specifically covers arc fault circuit interrupters (AFCIs) and dual-function arc/ground fault circuit interrupters. These are specialized electrical devices designed to detect and interrupt electrical arcs, which are a common cause of fires. The "provided for in subheading 8536.30.80" note indicates that these devices, for the purpose of this temporary classification, are recognized as similar in function and application to the electrical apparatus for switching or protecting electrical circuits, including those for switches and relays, falling under the broader heading of 8536.

As a leaf node within Chapter 99, this category represents a specific, temporary provision and does not have further subdivisions. Its distinction from the numerous sibling categories in the broader HTS, which cover a vast array of goods from live animals to manufactured products, is its explicit focus on specialized fire-prevention electrical safety equipment. Unlike general circuit protection devices that might fall under other headings, the defining characteristic here is the dedicated functionality to identify and mitigate arc fault conditions. This specific provision is likely in place to track or manage imports of these particular safety devices under temporary legislation or trade agreements.