Sourcing switched reluctance motors from China

Duty and classification for switched reluctance motors

Heading 8501 covers electric motors and generators, excluding generating sets. This guide concerns switched reluctance motors. The table lists candidate AC motor lines, not dedicated switched reluctance codes. Use a line only after confirming that the motor's construction, phase arrangement and shaft output match its complete description.

Read from the UK Trade Tariff on 30 September 2026, the candidate lines carried 0% duty for goods from China. Their supplied records show no anti-dumping or countervailing duty, suspension or attached import control. The heading's recorded authorised-use suspension concerns a separate AC commutator motor line. Import VAT is normally 20%.

Give your customs broker the motor datasheet, winding arrangement, output rating and details of any supplied controller to confirm the commodity code. The controller's incoming supply alone should not determine your choice of motor line. See the wider electric motor guide and import duty and VAT guide. For brushed DC motors, see our brushed DC motor sourcing guide. For synchronous reluctance motors, see our synchronous reluctance motor sourcing guide.

Specify the motor, switching control and load together

Specify continuous shaft output, starting torque, torque-speed curve, duty cycle, cooling and permitted temperature rise. Record winding connections, phase sequence, rotor-position feedback or sensorless operation, controller settings and cable pin assignments. Include shaft, keyway and flange drawings. Require a demonstration with the intended controller, load and cooling arrangement. For a motor assembly that includes a clutch, see our electromagnetic clutch sourcing guide.

For Great Britain, confirm whether the intended supply voltage brings the equipment within the Electrical Equipment (Safety) Regulations, and which technical documentation, declaration of conformity, CE or UKCA marking and importer identification requirements apply. For equipment within scope, the importer must ensure that instructions are in easily understandable English.

Assess electromagnetic compatibility for the supplied motor-controller arrangement. Confirm the applicable ecodesign scope with the relevant authority before requesting an induction-motor efficiency class. Where hazardous-substances restriction rules cover the finished product, confirm its manufacturer's technical documentation obligations with the relevant authority. Plan testing and certification around the actual configuration.

Worked duty example

Illustrative example, not a quote: Illustrative small batch of switched reluctance motors for an equipment builder, assuming classification under this line is confirmed under 8501 52 20 89, invoiced at £2,500 free on board, with £600 of freight and insurance to the UK. The customs value is £3,100. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £3,100, so it is £620. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Identity and fit: on arrival, compare model identification, winding connections, shaft dimensions, flange holes, connectors and cooling fittings with the approved sample and drawings.

Starting and switching: use the agreed controller to check loaded starting, direction, position feedback and restarting. Record the settings used and check for missed starts or unstable speed.

Torque, heat and noise: measure torque, speed and input current over the agreed operating range. Check temperature rise, vibration and acoustic noise under load, including the operating points where torque ripple matters.

Insulation and packing: arrange insulation checks against the agreed test plan, and inspect bearings, shaft runout, seals, corrosion and transit damage. Put the acceptance checks in the inspection brief.

What goes wrong

A motor may fit mechanically but start poorly because winding connections, position feedback or switching settings differ from the approved combination. An unloaded demonstration can conceal torque ripple, objectionable noise or overheating in service. Require test records identifying the motor, controller settings, load and cooling conditions.

Peak torque presented as continuous torque can leave the installation unable to sustain its duty. Changes to laminations, winding resistance, bearings or controller settings can also change performance without changing the model label. Retain the approved sample and require written agreement before substitutions.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.