Sourcing HV disconnectors from China
High-voltage disconnectors from China carry 2% UK duty across the relevant voltage bands, with no listed trade remedies or suspensions. Match the design and rating to type test evidence and the buyer's connection approval route; gas-insulated models need F-gas checks. Cambridge China Bridge sources high-voltage disconnectors.
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UK duty on high-voltage disconnectors
Read from the UK Trade Tariff on 22 November 2026, heading 8535 covers switching and protection apparatus above 1,000 V. Disconnectors fall within the isolating and make-and-break switch lines. The supplied Chinese-origin lines carry 2% duty, with no listed anti-dumping or countervailing duty and no suspension. The table repeats the applicable codes for manual and motor-operated versions.
Both disconnector lines carry an import control of fluorinated greenhouse gases. Imported equipment containing regulated F gas must be labelled. Confirm the gas, applicable restrictions and customs documents with your customs broker before shipment. The supplied tariff also lists an export control of mercury; ask the broker to confirm its relevance to the goods rather than treating it as an import prohibition.
Confirm the commodity code using the rated voltage, switching function and supplied configuration. For other apparatus under this heading, see the high-voltage switchgear guide.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Manual disconnectors above 1,000 V and below 72.5 kV | 8535 30 10 90 | 2% | None |
| Manual disconnectors rated 72.5 kV or above | 8535 30 90 90 | 2% | None |
Disconnector ratings, mechanisms and test evidence
Specify rated voltage, continuous current, short-time withstand duty, insulation level and indoor or outdoor installation. Record the isolation arrangement, terminal orientation, mounting dimensions, operating mechanism, auxiliary supply and earthing-switch configuration. State any intended switching duty explicitly, so the factory does not substitute a different switch design.
The reference guide identifies the disconnector and earthing-switch standard as part 102 of the IEC 62271 series, adopted as BS EN 62271. Match accredited type test reports to the supplied design and rating, and agree the network operator or buyer's engineer approval route before ordering.
Confirm with the relevant authority whether the Electrical Equipment (Safety) Regulations 2016 apply to the supplied equipment. Check the scope separately for supplied control equipment. Arrange testing and certification checks around the actual assembly and its components.
Worked duty example
Illustrative example, not a quote: Illustrative order: 40 motor-operated high-voltage disconnectors under 8535 30 10 90, invoiced at £120,000 free on board, with £4,000 of freight and insurance to the UK. The customs value is £124,000. Duty at 2% is £2,480. Import VAT at 20% is charged on the customs value plus duty, £126,480, so it is £25,296. Import taxes total £27,776; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £2,480 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Identity: match nameplates, serial records, drawings and test reports to the ordered design, ratings and mechanism.
Operation: witness opening and closing, contact alignment, position indication and the agreed earthing and operating interlocks under controlled factory conditions.
Electrical evidence: review routine dielectric and contact-resistance results against the agreed acceptance criteria; check terminal connections and auxiliary wiring.
Arrival: inspect insulators, contacts, linkages and mounting points for transport damage or corrosion. Check packing restraints and, for gas-insulated models, gas labels and leak-test records.
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What goes wrong
A report may cover a different insulator, contact arrangement or operating mechanism from the supplied unit. A matching product name does not establish matching test evidence. Freeze the approved drawings and component schedule, then review any factory substitution before shipment.
Bent linkages, cracked insulators and misaligned contacts can prevent full travel or reliable position indication. Interlocks and auxiliary contacts may disagree with the control drawings. Record defects on arrival and have the buyer's engineer assess them before installation or energisation.
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.
Frequently asked questions
What is the UK import duty on high-voltage disconnectors from China?
The supplied tariff lines carry 2% duty, with no listed anti-dumping or countervailing duty and no suspension. Choose the line using rated voltage and switching function.
Which test reports should I request for a high-voltage disconnector?
Request type test reports covering the exact design and rating, plus routine test records for the supplied units. Check insulation, contact resistance, mechanical operation and interlocks against the agreed specification.
Do high-voltage disconnectors need UKCA marking?
Assess supplied controls separately, and confirm the assembly's marking position.
Can I import a gas-insulated disconnector from China?
Confirm the gas and applicable restrictions before ordering. Equipment containing regulated F gas must be labelled. The tariff attaches an F-gas import control, so confirm declaration documents with your customs broker.