Caterpillar SR4B 500 kVA Diesel Generator Alternator from China
The Caterpillar SR4B is an AC alternator designed for diesel generator sets, delivering 500 kVA output for standby power applications in commercial buildings. It falls under HTS 8501.63.01.00 as an AC generator (alternator) with output exceeding 375 kVA but not exceeding 750 kVA, excluding photovoltaic types.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Verify exact kVA rating via manufacturer specs and include test certificates to confirm classification within 375-750 kVA range
• Obtain CSA/UL certification for North American markets and prepare RoHS declarations for electrical components
• Declare voltage/frequency specs accurately; misclassification to lower output subheadings is a common audit trigger