The encyclopedia · Product & Design · Product decision · 1956–1990s
Harting's Han rectangular connector became the industrial plug standard after 1956
Wilhelm Harting's robust, touch-safe Han connector defined the industrial rectangular plug; the Mittelstand firm became a global technology group.
Harting Technology Group
The solution
Wilhelm Harting founded his Mechanische Werkstätten in Minden in 1945 with his wife Marie, making cookers and irons in postwar scarcity. He saw Germany's rebuilding industry needed better electrical connectors, not just more of the old ones.
Moving to Espelkamp in 1950, he consulted engineers from machine-tool and automotive firms, then built a connector with higher contact density, enclosing pin-and-socket contacts, and new screw and crimp techniques. The Harting Norm (Han), patented in 1956 and trademarked in 1957, became the symbol of the industrial rectangular connector.
The Han proved itself in machine building and energy; in the 1990s the modular Han-Modular series bundled power, signals, light and data in configurable housings, keeping the standard relevant as industrial Ethernet arrived. The company grew into a global technology group and the Han remains the industry benchmark.
Why it worked
- Robust, touch-safe contacts fit harsh factory conditions.
- Higher contact density and crimp options made it broadly applicable.
- Early machine-tool and energy adopters turned it into a standard.
- Modular extension kept the standard alive through new eras.
What can be applied
A component becomes a standard when it solves the shared pain — ruggedness and ease of use — better than the incumbent; the maker of the de-facto standard then earns decades of follow-on business.
Aftermath
Harting grew from the two-person workshop into a family-owned technology group with production across Germany, Europe, Asia and the US; Han remains the generic name for industrial rectangular connectors, and hybrid Han-Modular designs with integrated data are marketed as the future of machine connectivity.
Sources
- Meilenstein der Automation: Wenn Pioniergeist verbindet
- Die Erfolgsgeschichte des Han-Steckverbinders
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