Reliable connections for modular energy storage systems

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Reliable connections for modular energy storage systemsHarting is now offering the Han S, which it claims is the first ever large-scale special connector for battery storage modules. The new series meets the technical requirements set down in the latest standards for stationary energy storage systems (including UL 4128) and is said to offer users “Optimal reliability for connected units”. The series features housings with space for a heavy-current contact up to 200A. The contacts are mounted in a housing which is freely pivotable and the locking system engages intuitively. The use of red for plus and black for minus, combined with the mechanical coding system, means that the interfaces are very difficult to confuse.

Harting says that Han S facilitates fast and reliable mating for energy storage modules and helps to process high numbers of connections. Alternatively, the new series can also be installed as part of a control line (BUS system) for the battery management system and features special contacts in the housing to support this.

Interfaces in modular energy storage systems are subject to special requirements. For instance, the wiring for lithium-ion batteries requires compact plug connections that do not heat their surroundings even when transmitting high currents. The connector housing must move as freely as possible to serve storage units effectively in terms of enhancing performance and efficient cooling. The Han S series combines straight attachment housings with angled ‘sleeves’ that have integrated pivotable protective elements for the contacts. This combination can be rotated 360 degrees, a key feature given the very limited space between the door opening and energy storage modules in a storage cabinet. This results in flexible connectors with high current load capacity, enabling the integration of the maximum number of storage components in the available space.

For more information about Harting’s Han S connector for battery storage modules please visit

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