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Heavy Duty Connectors

• Individual piece parts packaging • IP 65 ingress protection • Screw, Tension, PUSH-IN and IDC terminations • NEMA 4/4X approved • Stainless steel latches • Laser etched part numbers


Heavy-duty connectors are used wherever there is a need for a secure, simple and time-saving assembly of machinery and facilities. The connector housings are made of die-cast aluminum and offer excellent protection against dirt, moisture and mechanical stress. Special modular connectors make it possible to integrate signals, power supply, pneumatics, and data connections into a single connector.


The RockStar® product line defines new standards with it's comprehensive depth and width of its features. What other suppliers offer only as a custom configuration, Weidmuller supplies in its standard product line. As a result, selecting the proper connector is now easier than ever. You save both time and money and your work flow is optimized. Thus you can strengthen your position on the market and leverage your competitive advantage.


Heavy Duty Connector Tools and Services

Heavy Duty Connector (HDC) technology is simple, but with so many options and assembly configurations, specifying and buying components can be complicated. To assist with this process, Weidmuller offers product selectors, cable configurators (NEW), kitting services, and a quick-ship program guaranteeing shipment of our most popular products within 48 hours. Visit our HDC Services page and discover a new way to source your protected connectors.




A heavy-duty connector consists of a connector insert and its protective enclosure. The insert is therefore the heart of the heavy-duty connector. It is responsible for electrical functioning.


Connector inserts from Weidmüller are made from high-quality insulation materials, which allow secure transmission of high voltages in a tight space. Moreover, we use only a single type of plastic in our entire product line. This plastic is UL listed, and suitable for railway applications. This allows an unlimited world-wide use of the RockStar® connector.



Modular Inserts

Universal and flexible – modular inserts are the solution for many applications.


Both ModuPlug and ConCept are modular systems consisting of modules and frames.  Each system allows you to choose combinations of different modules that integrate easily into a frame compatible with Rockstar HDC housings.


ModuPlug is our newest offering featuring M12 data inserts, terminated on Cat. 5 or Cat 6.A cable for use in Industrial applications and Cat. 5 D-type or Cat. 6 X type for the transportation industry.   Several optional modules for the power connection are also available. 

ConCept is our original and most comprehensive modular system, providing power, pneumatic, M12 and RJ45 connections.

 RockStar® ModuPlug image



A heavy-duty connector consists of a connector insert and its protective enclosure. All of Weidmüller's RockStar® enclosures are made of high-quality die-cast aluminium. Thus they are impact- and corrosion-resistant, yet still compact and lightweight. Their patented stainless steel clips make them totally water- and dust-proof. They can be used under the harshest environmental conditions and are resistant to frost and vibrations.


IP65 Housings

Weidmüller has further developed its IP65 housing. The result is an industrial housing of a new design that also has the properties corrosion resistance and long service life. These new HDC industrial housings even surpass our previous stainless steel housings in all respects. All operation elements are made of stainless steel. A high-quality, multistage surface sealing provides safety for years. That’s why Weidmuller discontinued the stainless series and why you should use our new IP65 housing.

IP68 Housings

The IP68 housings have been developed for use under extreme environmental conditions. The high class of protection guarantees trouble-free operation in use on vehicles and under tough climatic conditions. If you want to protect your delicate interfaces from EMC emissions, these connectors are the right choice for you.


RockStar® IP65 EMC

The new RockStar® IP65 EMC enclosures are ideally suited for use in the harshest environmental conditions and provide protection against electromagnetic interference. All Weidmüller RockStar® enclosures are made of high quality die-cast aluminum; making them impact- and corrosion-resistant, yet compact and lightweight.  An excellent shielding effect, above the industry average, is the result of a unique labyrinth structure and a large contact area between the mated base and hood housing, insulated with an FPM seal.  The ozone- and UV-resistant FPM sealing material withstands a wide temperature range from -40° to 302°F.  IP65 EMC Rockstar® enclosures are the first housing series to feature a new locking lever design that utilizes plastic-covered handles.  Ensuring grip and static-free locking, the new handles are easy to lock and can be replaced, if needed, to prolong product lifetime. 



RockStar® Kits

RockStar® kits offer many advantages like simple purchasing as there is only one part number for all individual parts together. Storage of single parts is unnecessary because the complete set is combined in one pack and includes everything you need.


RockStar® kits consist of: male insert, female insert, plug housing, bulkhead enclosure, cable gland




Weidmuller is your complete Heavy Duty Connector source. We provide the following accessories for your application needs: crimp contacts, RailMate mounting rail system, tools, coding, adapter plates / cover plates, and gaskets.

Cable Glands

We offer a coordinated assortment of cable glands for a wide range of applications:

  • Control units
  • Cable glands made of plastic and brass
  • EMC cable glands
  • For hazardous areas in accordance with EN 50014, EN 50019 and ATEX
  • VDE, CSA and UL approvals


Product overview


ConCept Modular System


IP 65 housings


IP 68 / IP 69K housings


RockStar® Kits


HighPower housings


Heat Trace Connector


Crimp contacts


Cable glands

Find out more

Discover our product selector tool and make your connectors according to your wishes.


HDC Product Selector Tool