Size 4 connectors reduce installation space in industrial settings and data centers by 40 percent

Improved sustainability through reduced material consumption while maintaining the same technical functionality

Thursday, 23. April 2026

| Redaktion

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Space-saving, high-performance connector solutions: “Han 4 HPR” (bottom left), “Han 4B” (top center), and “Han-Eco Mod. 4” (right), Photo: Harting

With the new Size 4, Harting is expanding its portfolio of connectors and filling a gap between existing sizes. The “Han-Eco,” “Han B,” and “Han HPR” series are the first connectors to feature corresponding housings and inserts. Positioned between the “Han 3” and “Han 6” sizes, the new design enables space savings of up to 40 percent compared to the next larger variant. This allows for compact solutions in applications where installation space plays a critical role.

Compact solution for high-power applications

The new size addresses a conflicting requirement: smaller designs must increasingly transmit higher power levels. While larger connectors often take up too much space, smaller variants reach their limits in terms of current-carrying capacity. The new Size 4 connectors transmit currents of up to 70 amps, offering a compact solution for high-power applications. At the same time, they create additional space for other infrastructure such as cooling or ventilation.

Connectors for mechanical engineering and industrial applications

The new size positions itself between established standards. Larger designs are oversized for many applications, while smaller connectors cannot provide the required power. This intermediate solution allows systems to be designed more efficiently and better adapted to specific requirements. In mechanical engineering and automation, the connectors enable space-saving connections for drives, frequency converters, and other components. The compact design also offers advantages in energy and rail applications. The robust design allows for use in demanding industrial environments where both reliability and a compact design are required.

Modular design increases flexibility

Another advantage lies in the modular design. Adapters allow for the integration of inserts from the “Han-Modular” system, which comprises more than 100 different modules. This enables flexible adaptation to different requirements and supports scalable system architectures.

Sustainable concepts supported by connectors

In addition to saving space, the connectors also contribute to increased efficiency. The lower impedance of the contacts helps reduce energy losses. Furthermore, the compact design results in reduced material usage, which has a positive impact on resource efficiency.