8535.29.00 - Other

This HTS category, 8535.29.00, encompasses automatic circuit breakers designed for voltages exceeding 1,000 volts that do not fall under the sibling category 8535.21.00.00, which specifically covers circuit breakers for voltages less than 72.5 kV. Therefore, this classification applies to automatic circuit breakers intended for high-voltage electrical circuits, typically found in industrial power distribution systems, substations, and high-voltage transmission lines. The key determining factor for classification within this residual category is the operational voltage rating, where the circuit breaker's design and construction are specifically engineered to interrupt fault currents in systems operating at or above 72.5 kV.

To further refine classification within this broad "Other" designation for automatic circuit breakers exceeding 1,000V, specific subcategories exist. These subdivisions allow for more granular tracking based on the precise voltage levels of the circuits they are intended to protect. The primary distinction lies between circuit breakers designed for very high-voltage applications and those that serve other high-voltage functions but do not meet the criteria for more specific voltage brackets.

The subcategories under 8535.29.00 are designed to differentiate based on significant voltage thresholds. Specifically, 8535.29.00.20 is reserved for automatic circuit breakers designed for circuits of 345 kV or more, representing the highest voltage applications. In contrast, 8535.29.00.40 serves as a residual category for all other automatic circuit breakers exceeding 1,000V that are not classified under 8535.21.00.00 or 8535.29.00.20, effectively covering the remaining high-voltage spectrum not explicitly detailed.