Hoonsun designs, manufactures, customizes and exports a wide range of electronic and electrical products, including our heavy-duty connectors. Certified to CE, RoHS, REACH and UL standards, these connectors feature high-insulation polycarbonate construction and provide reliable performance across a wide range of industries and applications. Hoonsun is also proud to be a trusted and premium partner of ABB.

The rugged IP68-rated aluminum housing of our heavy-duty connectors effectively isolates dust, moisture and corrosive chemicals, while the precision-machined bayonet lock ensures shockproof mating that will not loosen even under shock or severe cycling. The internal gold-plated contacts can carry up to 200 A of current or high-speed data for multiple signal types, ensuring stable conductivity and minimal signal loss.

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Heavy-duty Connector

Heavy-duty Connector CE / RoHS / REACH / UL

What is A Heavy-duty Connector?

Heavy‑duty connectors (HDC) excel in high‑voltage, high‑current applications—such as industrial automation, energy systems, and transportation. Rated IP65–IP68 for protection and engineered for vibration and corrosion resistance, they ensure reliable connections in the most extreme environments.

Durable Housing: Typically made from die-cast aluminum alloys or high-performance thermoplastics, often with IP65–IP68 protection ratings to seal out contaminants.

Multipin Contact Inserts: Support anywhere from a few to dozens of contacts (power, signal, coaxial, or fluid lines), with contacts plated in nickel, silver, or gold for corrosion resistance and long life.

Secure Locking: Threaded coupling rings, bayonet locks, or levers ensure a vibration-proof connection that won’t back off under heavy use.

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China’s High-quality Cable Connector Product Supplier

Heavy‑Duty Connectors: Industrial‑grade, high‑power connection solutions delivering stable, safe electrical performance in harsh environments.

Robust metal-and-engineering-plastic shell offers impact resistance, dustproof and waterproof protection, and a modular design supporting mixed power, signal, and data transmission.

High Reliability: Gold‑ or silver‑plated contacts ensure low resistance and durability—rated for over 5,000 mating cycles—and operate across –40 °C to +125 °C.

Quick Installation: Plug‑and‑lock design with snap‑on mounting cuts wiring time by up to 50%. Supports on‑site termination with no special tools required.

Safety Certified: UL, CE, and IEC 61984 approvals, plus EMC anti‑interference compliance, guarantee safe, reliable operation.

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Heavy Duty Connector Applications

Industrial Automation: Robots, PLC control cabinets, and CNC machinery.

New Energy: Wind turbines, photovoltaic inverters, and charging stations.

Rail Transportation: On‑board power supplies and signal control systems.

Construction Machinery: Excavators and crane electrical modules.

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Why Choose Us?

We’re dedicated to delivering premium wire and cable connectors tailored to your needs.

We warmly invite you to explore our extensive product range—your satisfaction is our top priority. Our team is ready to answer any questions or accommodate custom requirements. With quality as our promise, we’re confident our products will significantly enhance your project.

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What IP rating do they typically have?

Most heavy-duty connectors range from IP65 to IP68, offering complete protection against dust ingress and water immersion up to specified depths.

What materials are used in their construction?

Housings are usually die-cast aluminum or high-performance thermoplastics; inserts use nickel-, silver-, or gold-plated contacts for corrosion resistance and long life.

Are they suitable for chemical or oil-rich environments?

Yes, many use chemical-resistant seals and finishes that withstand oils, fuels, solvents, and other aggressive substances.

How do I select the right shell size and insert layout?

Match your application’s current/voltage needs, number and type of contacts, and space constraints—then choose a shell series (e.g., size 16, size 24) that accommodates your insert.

Where are heavy-duty connectors commonly used?

They’re found in automation and robotics, renewable energy (wind, solar), transportation (rail, marine, off-road), oil & gas, and any setting requiring rugged, reliable connections.

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