Feature

Han S 450 Plus: A reliable and powerful connector for energy storage systems

Energy storage systems (ESS) require interfaces which are compact and generate as little heat as possible, even when transmitting high currents.

19/12/2025 12:55:17

HARTING has developed the Han S series for this application area. The cable side consists of angled housings, with the input side freely rotating around 360 degrees when plugged in.

This makes the cables which connect the ESS modules more flexible. Storage modules can also be combined into larger units.

Previously, 200A was the maximum power rating. The power capacity of the new Han S 450 Plus has been increased to 500A to meet the demand for higher charging and discharging currents for battery storage.

The enlarged contacts and housings are designed so that they do not overheat during operation.
HARTING has developed larger housings for contacts with three different conductor cross-sections:
• for 95mm² (AWG 3/0 or 4/0) up to 350A
• for 120mm² (250 kcmil) up to 400A
• and for 150mm² (300 kcmil) up to 450A

Robustness and ease of use are also benefits of the Han interface: it is guaranteed to withstand up to 500 mating cycles, which no other comparable product can offer. The locking mechanism is intuitive.

The colours red for positive and black for negative, as well as additional colour options of blue and orange, make Han S connections easily identifiable.

In addition, the housings feature a double locking system and numerous coding options, including the use of five different mating profiles.

Click here to learn more.

Written By Sophia Bell

Sophia Bell is the Group Editor of DPA, Connectivity, and PBSI. She joined the team in 2020 as Assistant Editor after achieving a First-Class Honours BA in English Literature and Film Studies from the University of East Anglia. In her current role, she leads the editorial strategy, driving digital growth and ensuring each title continues to deliver trusted, relevant insight for engineering and manufacturing professionals.