TDK Launches HVC28 and HVC29 Contactors for 1,000 V EV and 1,500 V Industrial Systems

TDK has introduced two new series of gas-filled high-voltage DC contactors designed for electric vehicle and industrial power applications. The HVC28 targets automotive systems up to 1,000 V DC, while the HVC29 is engineered for industrial systems up to 1,500 V DC.

What Happened

Both the HVC28 and HVC29 series are available with continuous current ratings of 300 A, 400 A, 500 A, and 600 A. The components measure 95.5 x 96 x 49 mm and weigh approximately 640 g for the HVC28 and 630 g for the HVC29. They are designed to operate in temperatures ranging from -40° C to 85° C. The single-coil versions consume 6 W at their nominal 12 V or 24 V voltage. The HVC28 features a short-circuit current capability of 16 kA for 5 ms, whereas the HVC29 handles 6 kA for 5 ms. Both series utilize a ceramic, gas-filled arc chamber to interrupt DC currents and feature polarity-free main terminals that allow current to flow in either direction.

Why It Matters

For the EV sector, the HVC28 is intended for traction battery systems in passenger and commercial vehicles, xEV battery disconnect units, high-voltage junction boxes, and DC fast-charging stations. It can perform one maximum cut-off operation at 1,600 A and 1,000 V under specified resistive-load test conditions. The HVC29 supports industrial applications such as energy storage systems, solid-state transformers, and uninterruptible power supplies. Notably, the HVC29 can also support 800 V DC power architectures for AI data centers, indicating a convergence between high-power EV infrastructure and data center energy demands. TDK notes that the contactors are CE- and UKCA-compliant and certified to UL 60947-4-1.

The Bottom Line

TDK’s new HVC28 and HVC29 contactors provide high-current, high-voltage switching solutions for both automotive and industrial markets, with optional mirror contacts available for safety-relevant switching-state monitoring.