Circuit Breaker Insulating Oil
Specialty petroleum oil for oil-immersed circuit breakers, featuring >70% petroleum content and balanced hydrocarbon mix (<50% any single). Meets light oil distillation test for 2710.12 and insulating function for .4545. Critical for interrupting high currents safely in electrical grids.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If heavier than light oils
Oils distilling >210°C for 90% volume classify as other petroleum oils.
If sold as prepared lubricant
Retail-packed lubricants with petroleum base go to Chapter 34.
If for turbine lubricant base stocks
Specific to steam/gas turbine uses, not electrical insulation.
Not sure which classification is right?
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Import Tips & Compliance
• Lab certification for PCB-free status mandatory; ship in nitrogen-blanketed containers; pitfall: bulk shipments without end-use proof may default to higher-duty general oils
Related Products under HTS 2710.12.45.45
Transformer Insulating Oil Type II
This is a highly refined mineral oil specifically formulated for use in electrical transformers, containing over 70% petroleum oils with less than 50% of any single hydrocarbon. It meets the criteria for light oils under 2710.12 as 90% or more distills at 210°C, and is classified under 2710.12.4545 due to its function as an insulating or transformer oil. The oil provides dielectric insulation and cooling in high-voltage transformers.
Electrical Insulating Oil for Power Transformers
A naphthenic-based insulating oil designed for power distribution transformers, consisting of petroleum distillates with no single hydrocarbon over 50% by weight. Classified in 2710.12.4545 as a light oil preparation (>90% distill at 210°C) serving as transformer oil for insulation and heat dissipation. It complies with IEEE C57.106 standards for electrical performance.
Synthetic Blend Transformer Oil
A blend of highly refined petroleum oils (>70% content) with synthetic additives, used in high-performance transformers where no single hydrocarbon exceeds 50%. It qualifies as light oils under 2710.12 (distillation >90% at 210°C) and specifically as insulating oil in 2710.12.4545. Provides superior oxidation stability for long-term transformer operation.
High-Voltage Switchgear Insulating Oil
Refined mineral oil for insulating bushings and switchgear in high-voltage applications, with petroleum oils >70% and hydrocarbon mixtures <50% single compound. As a light oil (90%+ distill at 210°C), it fits 2710.12.4545 for insulating/transformer oils. Ensures arc quenching and dielectric strength in electrical substations.
Naphthenic Transformer Fluid
Low-sulfur naphthenic insulating fluid for distribution transformers, >70% petroleum oils with no dominant hydrocarbon (>50%). Light oil per ISO 3405, classified 2710.12.4545 as transformer oil. Offers excellent low-temperature performance and gas absorption properties.
Askarel-Replacement Insulating Oil
Non-PCB mineral oil replacing old askarels in transformers, with >70% petroleum and <50% single hydrocarbon compliance. Qualifies as insulating light oil under 2710.12.4545 due to distillation profile. Used for retrofitting legacy electrical equipment.