TDK Corporation has introduced two new high-voltage contactors designed for use in demanding applications. The HVC43MC integrates a mirror contact for position detection, while the HVC45 offers increased short-circuit current handling capability. These components support systems operating at up to 1000 V (DC), making them suitable for lithium-ion battery switching in traction applications, energy storage systems (ESS), and DC charging stations.
The HVC43MC incorporates a mirror contact compliant with IEC 60947-4-1, allowing precise detection of the main contact’s position. This mechanically linked auxiliary contact provides reliable feedback on whether the primary circuit is open or closed, enhancing system monitoring and safety. The contactor supports continuous currents up to 250 A and can interrupt currents of up to 450 A at 1000 V (DC) and 2000 A at 450 V (DC). Its compact design measures 74.5 x 78 x 40.5 mm.
The HVC45 is designed to handle short-circuit currents up to 12 kA for 5 ms, addressing the needs of modern high-energy-density batteries. This capability exceeds conventional solutions in its size range, which typically support short-circuit currents of 8 to 10 kA. The contactor accommodates continuous currents up to 300 A, with a maximum cut-off rating of 900 A at 1000 V (DC) and 2200 A at 450 V (DC).
Both contactors utilize TDK’s gas-filled ceramic arc chamber technology, which enables reliable operation in high-voltage environments. They also feature bidirectional switching capability, allowing current flow in both directions. Available with 12-V or 24-V coil voltages, the contactors meet CE, UKCA, and UL certification standards, ensuring compliance for global applications.
These additions to TDK’s portfolio provide solutions for a range of high-voltage applications, including traction battery systems in electric vehicles, DC charging infrastructure, energy storage systems, and uninterruptible power supplies.
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Filed Under: Battery Management, Energy Management & Harvesting, lithium-ion