HS Code for Surge protection device

The classification for surge protection devices (SPDs) is governed by the General Rules of Interpretation (GRI), specifically GRI 1, which directs classification to the heading that provides the most specific description. Heading 8536 covers electrical apparatus for switching or protecting electrical circuits, or for making connections to or in electrical circuits, for a voltage not exceeding 1,000 volts. Within this heading, subheading 8536.30 is designated for "other apparatus for protecting electrical circuits." These devices are essential for safeguarding sensitive electronic equipment from transient overvoltages caused by lightning or switching surges. They work by limiting the voltage supplied to an electric device by either blocking or shorting to ground any unwanted voltages above a safe threshold. Because these devices are designed for circuit protection and operate within the low-voltage range (typically 120V to 480V in industrial and residential settings), they are accurately placed under this code. This classification is further supported by the Explanatory Notes to the Harmonized System, which clarify that 8536 includes devices that prevent damage to equipment by diverting excess voltage or limiting current flow.

Products Included

• Type 2 surge protective devices for installation in main distribution boards
• Type 3 surge protective devices for point-of-use protection
• DIN-rail mounted surge arresters for low-voltage control panels
• Transient voltage surge suppressors (TVSS) integrated into power distribution units
• Plug-in surge protectors designed for consumer electronics and home office equipment

Common Misclassification

A frequent error is classifying these devices under HS code 8535.40. However, 8535.40 is strictly reserved for apparatus used in circuits with a voltage exceeding 1,000 volts, such as high-voltage utility lines. Another common misclassification is 8536.20, which covers automatic circuit breakers. While both protect circuits, a circuit breaker responds to overcurrent (amperage), whereas an SPD responds to overvoltage. Additionally, some importers mistakenly use 8537.10, which is for boards or panels equipped with multiple apparatuses. If the SPD is imported as an individual component, 8536.30 is the correct designation.

FAQ

What is the HS code for Surge protection device?

The primary HS code for surge protection devices intended for use in systems with a voltage not exceeding 1,000 volts is 8536.30.

Is a surge protector the same as a circuit breaker?

No, they serve different functions. A circuit breaker (8536.20) protects against wiring damage from too much current, while a surge protector (8536.30) protects against voltage spikes.