High-voltage contactors for emergency disconnection of Li-ion batteries

13-11-2023 | TTI Europe | Power

TTI Europe now stocks the HVC50 high-voltage contactors from TDK. These gas-filled ceramic contactors can safely and reliably handle continuous DC currents up to 600A and DC voltages of up to 1500V in Li-ion batteries in 30ms or less, depending on the type. The bi-directional design of the contactors means that they are ideal for charge and discharge batteries and power motor drive systems with regenerative braking.

The compact, UL-certified units measure 107.3mm x 94.2mm x 141mm (LxWxH) and weigh approximately 1,600g. The contactors have a dual coil construction with a working voltage of 24V and need 5.5W in continuous operation. The service life for resistive opening (450V/300A) is specified for 1500 operations, and at 750V/300A, this value is 750.

“These high-voltage contactors with high continuous current carrying capacity can be used in a wide range of applications where fast and reliable emergency disconnection of high DC voltages is required,” says Dermot Byrne, industry marketing director – Transportation at TTI Europe. “Typically, they are used in electric vehicles for fast disconnection of the lithium-ion battery as well as in DC charging stations. More recently, they are being used in stationary ESS, such as storage for photovoltaic or UPS systems.”


By Seb Springall

Seb Springall is a seasoned editor at Electropages, specialising in the product news sections. With a keen eye for the latest advancements in the tech industry, Seb curates and oversees content that highlights cutting-edge technologies and market trends.