Skip to main content
Molex Heavy-Duty Connector (HDC) housing and hood with angled exit

Industrial Connectors

Heavy-Duty Connectors

Supporting industrial automation and production line expansion, Heavy-Duty Connectors (HDCs) provide robust durability, high power capacity, modularity and industry standard compatibility to seamlessly integrate a variety of devices.

Find Parts Contact Us
Current Voltage Ingress Protection NEMA Ratings
Up to 200.0A Up to 1,000V IP66, IP68, IP69 4, 4X, 12

Heavy-Duty Connectors

Find Parts
Heavy-Duty Connector crimp contact insert, 7-pole, size 3A

Heavy-Duty Cable Glands

Find Parts
Heavy-Duty Connector cable gland for 4.00 to 10.00mm cable

Heavy-Duty Contacts

Find Parts
Heavy-Duty Connector Crimp Contact, Female, 10.0A capacity

Heavy-Duty Accessories

Find Parts
Heavy-Duty Connector Adapter accessory

Features and Benefits

Manufacturers and industrial facilities need connectors that operate reliably in harsh environments that are subject to extreme temperatures, dust and moisture. These connectors must simplify integration into existing systems, facilitate upgrades, adapt to different devices, and enable expansion or reduction of capacity to meet market needs.

Robust and reliable interconnect options help improve productivity and reduce production downtime by minimizing failures and maintenance costs. Versatile connectors help streamline system expansions, reductions or upgrades, enabling faster and more nimble adaptation to shifting market requirements. The use of industry-standard interfaces helps accelerate system integration, which limits downtime and design work.

Heavy-Duty Connectors (HDCs) from Molex deliver reliable service in extreme temperatures and harsh conditions, reducing failure rates with IP66, IP68 or IP69 seal ratings that support consistent performance. HDCs offer modular and flexible connections that simplify network design and enable quick changeovers to support shifting production needs. These connectors are compatible with a wide range of industry standards and other manufacturers’ products, simplifying integration with existing devices and infrastructure.

Superior Reliability in Harsh Environmental Conditions

HDCs offer rugged, corrosion-resistant housings with IP66, IP68 or IP69 seal ratings to deliver reliable performance in harsh applications subject to mechanical stress and moisture exposure. Electromagnetic-compatibility (EMC)-ready connectors and features such as shielded cable glands help ensure consistent data transmission even in noisy environments.

Molex Heavy-Duty Connector (HDC) housing and hood with angled exit

Enhanced Design Flexibility and Adaptability

Modular and flexible, HDCs combine power, signal, pneumatic and circular bus connections into a single plug. This optimizes the limited space in control cabinets and makes system expansion and reconfiguration easier.

Molex Heavy-Duty Connector (HDC) assembly showing modular frames, modular inserts, housing and vertical-exit hood

Industry-Standard Interfaces and Terminals

To minimize specialized tooling and training requirements while maximizing versatility and availability, HDCs utilize industry -standard interfaces to ensure compatibility with a wide range of standards and products while using intuitive terminals and locking methods to streamline maintenance and assembly work.

Molex Heavy-Duty Connector (HDC) assembly showing monolithic inserts, housing and angled-exit hood

Offers high current and voltage ratings
Voltage capacities up to 1,000V and current capacities up to 200.0A, with as many as 216 10.0A poles (108 circuits) for high-circuit-count connections, support high-power applications and limit the need for multiple connectors.

Improves performance
Heavy-duty, impact-resistant enclosures with asymmetric guide rails; stainless steel pegs; and spring-loaded, lockable metal covers help prevent assembly errors and deliver safe and reliable long-term operation.

Simplifies design work
Hybrid monolithic power/signal inserts optimize space, avoid lengthy assembly times and simplify design and maintenance work by combining multiple functions into one plug.

Delivers security and robustness for harsh environmental conditions 
Corrosion-resistant housings with oil-resistant seals rated IP66, IP68 or IP69 and NEMA ratings of 4/4X/12 enable use in applications subject to dust and water ingress, while robust construction enables reliable operation between -40 and +125°C.

Enhances design flexibility
Modular inserts deliver a wide range of options for combining customized power, signal, circular-bus, high-voltage and pneumatic connections in one plug to meet application needs and minimize design limitations.

Streamlines system integration
Compatibility with a wide range of devices and compliance with industry standards eases system integration and helps avoid time delays.

Datasheets and Guides

Applications by Industry

Building automation
Building management systems (BMS)
Charging infrastructure devices
Energy storage systems
Renewable energy devices
Smart grid installations

AC power distribution equipment
Power reliability systems

This is not a definitive list of applications for this product. It represents some of the more common uses.

Frequently Asked Questions

How can heavy-duty connectors help optimize space in control cabinets?

Monolithic and modular inserts enable power, signal, circular bus, high-voltage and pneumatic connections to be made in a single connector, reducing space requirements. Flexible cable outlet directions and hoods that enable the use of large-diameter cables in tight spaces help optimize space in constrained cabinets and enclosures.

What terminal options are available?

Molex HDCs offer industry-standard crimp, screw and spring-loaded terminals as well as push-in terminals that don’t require any tooling at all for installation, helping minimize the need for specialized tooling and training.

Do Molex heavy duty connectors match industry-standard formats?

Yes, Molex HDCs meet industry standards for heavy-duty connectors. These standards enable HDCs to be intermateable between manufacturers. Types 3A, 10A, 16A, 32A, 6B, 10B, 16B, 24B, 32B, 48B and others are available.

What is the maximum capacity (circuits and amps) of heavy-duty connectors?

HDCs support up to 108 circuits (216 poles) at 10.0A per pole or support up to 200.0A per pole with three circuits (six poles) per connector for high-current applications.

Featured Products