8535 - Electrical apparatus for switching or protecting electrical circuits, or for making connections to or in electrical circuits (for example, switches, fuses, lightning arresters, voltage limiters, surge suppressors, plugs and other connectors, junction boxes), for a voltage exceeding 1,000 V:

Category 8535 encompasses a broad range of electrical apparatus designed for the control, protection, and connection of electrical circuits operating at voltages exceeding 1,000 volts. This includes essential components such as switches for opening and closing circuits, fuses and circuit breakers for overcurrent protection, and devices like lightning arresters and surge suppressors that safeguard equipment from voltage transients. It also covers various types of plugs, sockets, and junction boxes specifically engineered for high-voltage applications, facilitating the safe and reliable distribution and management of electrical power.

Unlike other categories within Chapter 85, which might focus on electrical machinery, sound recorders, or specific types of electronic components, 8535 is exclusively dedicated to these robust, high-voltage switching, protection, and connection devices. Its scope is defined by the critical function of managing electrical flow and safeguarding circuits from faults or surges in demanding industrial and power transmission environments.

Within 8535, further subdivisions refine the classification based on the specific function and design of the apparatus. For instance, 8535.10 covers fuses, while 8535.30 differentiates between isolating switches and make-and-break switches, each serving distinct operational roles. The category also segregates specialized protection devices like lightning arresters and surge suppressors under 8535.40, and a residual category, 8535.90, accounts for any other high-voltage electrical apparatus not otherwise specified.