High-voltage contactors with an integrated mirror contact and for short-circuit currents

TDK Corporation has two new additions to its high-voltage contactor portfolio for harsh environments: the HVC43MC with integrated mirror contact and the HVC45 with enhanced short-circuit current handling capability. These new contactors for up to 1000V (DC) allow reliable switching of lithium-ion batteries in traction applications, ESS, and DC charging stations. These components underscore the company's dedication to facilitating the transition to a greener, more electrified future.

With an integrated mirror contact according to IEC 60947-4-1, the HVC43MC allows safe detection of the main contact's position. This mechanically linked auxiliary contact delivers reliable feedback about whether the main contact has opened or closed, improving system safety monitoring. The contactor can handle continuous currents up to 250A and cut-off currents up to 450A at 1000V (DC) and 2000A at 450V (DC), respectively, all in a compact package measuring 74.5mm x 78mm x 40.5mm.

With a short-circuit current handling capability of up to 12kA for 5ms, the HVC45 sets an industry benchmark, exceeding conventional solutions in its size class that typically achieve 8kA to 10kA. This improved capability addresses the needs of modern high-energy-density batteries that can attain higher short-circuit currents. The contactor can handle continuous currents up to 300A and features a maximum cut-off rating of 900A at 1000V (DC) and 2200A at 450V (DC), respectively.

Both series include the company's proven gas-filled ceramic arc chamber technology and bidirectional switching capability, allowing current flow in both directions. The contactors are available with 12V or 24V coil voltages and are certified to CE, UKCA, and UL standards, supporting worldwide deployment.