In re Mitsubishi Electric Automotive India Private Limited (CAAR Delhi)
The Customs Authority for Advance Rulings (CAAR), Delhi, examined an application filed by Mitsubishi Electric Automotive India Pvt. Ltd. seeking classification of “Inverter Assembly Units” (IAUs) proposed to be imported from Japan and eligibility for customs duty exemption under Notification No. 69/2011-Cus.
Product Description
The IAUs are critical electronic sub-assemblies used in Mild Hybrid Electric Vehicles (MHEVs) as part of the Motor Generator Unit (MGU). They manage the electrical energy flow within the hybrid powertrain by converting direct current (DC) to alternating current (AC) during vehicle acceleration and starting, and vice versa during regenerative braking. Key components include:
-
Control board with motor control algorithms
-
Field Effect Transistor (FET) power modules with heat sinks
-
Resolver assembly to detect rotor position
-
Connectors for signal transmission
-
Protective casing
The IAUs provide precise torque control, enable regenerative braking, recover energy during deceleration, and contribute to fuel efficiency. After import, they are assembled with other MGU components before integration into the vehicle.
Classification Issue
The applicant proposed classification under Customs Tariff Heading (CTH) 8504 40 90 (“Other static converters”) of the Customs Tariff Act, 1975. Competing headings considered included:
-
8504 40 10 (Electric inverters)
-
8511 90 00 (Parts of ignition or starting equipment)
-
8708 99 00 (Other motor vehicle parts)
Under General Rules of Interpretation (GRI) 1 and 3(a), classification must be determined by heading terms and relevant Section/Chapter notes. Note 2(a) to Section XVI specifies that parts identifiable as goods of Chapters 84 or 85 are classified in their own headings, not as parts under other chapters. Note 2(f) to Section XVII excludes electrical machinery of Chapter 85 from motor vehicle parts classification under Chapter 87.
Findings on Classification
CAAR found that the IAU is an independent electrical apparatus performing static conversion functions, not merely a “part” of another machine. The device serves both inverter (DC-AC) and rectifier (AC-DC) roles, aligning with the Harmonized System of Nomenclature (HSN) Explanatory Notes for static converters under heading 8504.
The ruling drew on judicial precedents:
