HS Code for Wirewound potentiometers

Wirewound potentiometers are classified under HS code 8533.31. This classification is determined by the product's identity as an electrical resistor (heading 8533) and its specific mechanical design as a wirewound variable resistor. Subheading 8533.31 is reserved for wirewound variable resistors, including rheostats and potentiometers, that have a power handling capacity not exceeding 20 Watts. These components consist of a resistive element made of insulated wire wound around a core, with a sliding contact (wiper) that allows the user to adjust the resistance. The classification logic follows GRI 1, as the product is explicitly named in the heading and subheading descriptions. The 20W threshold is a critical technical boundary; if the potentiometer is designed to handle more than 20W, it would move to subheading 8533.39. These devices are essential in electronic circuits for controlling voltage or current, such as in volume controls or calibration equipment.

Products Included

• Precision wirewound potentiometers
• Wirewound rheostats (<= 20W)
• Multi-turn wirewound potentiometers
• Single-turn wirewound variable resistors
• Panel-mount wirewound pots

Common Misclassification

The most common misclassification occurs between 8533.31 and 8533.39. The latter is used for wirewound variable resistors with a power handling capacity exceeding 20W. Importers must verify the technical datasheet to ensure the wattage rating is correct. Another error is classifying them under 8533.40, which covers "other" variable resistors. However, 8533.40 is intended for non-wirewound types, such as carbon composition or cermet potentiometers. If the resistive element is wire, 8533.31 or 8533.39 must be used.

FAQ

What is the HS code for wirewound potentiometers?

The HS code for wirewound potentiometers with a power capacity of 20W or less is 8533.31.

How do I distinguish between HS 8533.31 and 8533.40?

Classification depends on the material of the resistive element. If it is made of wound wire, use 8533.31. If it is made of carbon, cermet, or other materials, use 8533.40.