Import Ac Vacuum Contactor Hvj3-7.2kv — Buy in wholesale FOB from Supplier in China

Hubei Jucro Electric Co. manufactures the HVJ3-7.2kV AC vacuum contactor for 50Hz networks at rated voltage 7.2kV, with current ratings spanning 160A, 250A, 400A, 630A, 800A and 1000A. The wider current range distinguishes this model from its 12kV counterpart, particularly suiting high-current motor control and power distribution where 7.2kV insulation is adequate. Control voltages of 380V, 220V and 110V are selectable, while main circuit power frequency withstand voltage is 32,000V. Contact clearance is 3.5±0.3mm with identical 2±0.2mm over-travel and >85N contact pressure. The unit weighs 25.5kg and shares the same one-million mechanical life and 10Ie/8Ie make-break capacity as the higher-voltage series.

The reduced 7.2kV insulation level allows a more compact vacuum interrupter and smaller contact gap than 12kV designs, reflected in the 3.5mm versus 5mm clearance. This geometry lowers the operating energy requirement and permits faster switching cycles, beneficial for repetitive motor starting and capacitor switching. The same Cu-Cr contact technology and metal bellows sealing apply, with vacuum levels typically below 10⁻⁴ Pa ensuring long electrical life. Pollution degree 3 and altitude limits of 1,000m match standard industrial conditions. The wider current range up to 1000A addresses heavy-load applications such as mine winder drives, large pump stations, and primary crusher mills where 7.2kV is a common distribution voltage in mining and heavy industry sectors.

Buyers evaluating the HVJ3-7.2kV against the 12kV variant should assess whether their system voltage may rise above 7.2kV during transient conditions or future upgrades. The 800A and 1000A variants likely require modified heat dissipation and larger conductor terminations, details Hubei Jucro Electric Co. should confirm. Standard applications include F-C switchgear for transformer feeders, synchronous motor starting, and reactive power compensation banks. The supplier's Zhijiang facility serves domestic and export markets, though buyers must verify export certification, current production capacity, and whether the 1000A variant is stocked or built to order.

Hubei Jucro Electric Co. is based at Xiannv 4th Road, Xiannv Industrial Zone, Zhijiang, Hubei Province, with its registered postal address in Yichang 443200. The supplier holds a harbor trust tier, confirming business registration verification. Platform data shows a 0.00 response rate and zero average response hours, indicating no buyer engagement through this channel to date. No workforce size, annual turnover, year of establishment, or specific factory floor area is disclosed in the available profile information.

The company lists vacuum contactors as its product focus, with the HVJ3 series covering both 7.2kV and 12kV ratings. There is no mention of ISO certification, patent holdings, export experience by country, or in-house vacuum interrupter manufacturing versus purchased components. The Hubei location provides access to raw material suppliers and logistics networks serving central and eastern China. Buyers should conduct direct due diligence, including factory visit or video audit, to assess production capability, testing equipment, and quality management maturity before committing to volume orders.