Schaltbau introduces C303 contactor series for enhanced bidirectional DC applications

Schaltbau GmbH today announced the launch of the C303 contactor series, the newest addition to its Eddicy portfolio of solutions to help enable electrification for a sustainable future. Engineered for bidirectional DC applications, the C303 series offers unmatched performance suitable for a range of industries including stationary charging infrastructure, battery test benches, non-IATF electric vehicles, DC microgrids, intralogistics, and more.

• Fully bidirectional, meeting key operational (KO) criteria for applications such as energy storage, charging stations, electric vehicles, and vehicle-to-grid (V2G) 
• Very low contact resistance of slightly over 100 µΩ, best-in-class performance with low contact warming and low power loss due to optimized contact pills 
• Properly designed coil drive with fast switch on and AgSnO2 contact tips result in superior performance in short time currents (5kA capacity for 20 milliseconds without contact welding) and high making capacity (currents up to 2kA without contact welding) 
• High diagnostic coverage and performance for security calculations due to NC aux contact with mirror contact function compliant with EN6047-4-1 Annex F 
• Smallest Schaltbau contactor for 350A Thermal current, complete plug-and-play capability 

“Through meticulous engineering and a tireless pursuit of excellence, the C303 series exemplifies our commitment to delivering cutting-edge solutions,” said Steffen Munz, CEO, Schaltbau Group. “This contactor series sets new standards for performance and efficiency in bidirectional DC applications. We are proud to introduce a product series that not only pushes the boundaries of innovation but also empowers our customers to achieve their electrification goals with confidence.” 

With ultra-low contact resistance just above 100 µΩ, power loss is minimized, optimizing system efficiency; and with reduced contact warming, measuring 2 to 3 times lower than competitors, the series boasts superior thermal management capabilities. This translates to enhanced reliability and longevity, even in challenging conditions, thanks to optimized contact forces and advanced contact pills. 

Designed for high inrush currents or capacitances, C303 contactors have a making capacity of 2,000 amps. Continuously carrying up to 350 amps, they withstand short-circuit currents of up to 4,000 amperes for 20 milliseconds, staying fully functional with no contact welding – setting new standards for functionality in short time currents. Full bidirectionality ensures seamless disconnection of high-output circuits, up to 1,200 amps/850 volts, regardless of current direction. 
 

The well-designed coil drive ensures rapid switch-on times, enhancing system responsiveness and efficiency. Additionally, the use of AgSnO2 contact tips minimizes fire or explosion risks, ensuring operational safety. Finally, offering versatile auxiliary contact options—NC, NO, and CO—the C303 series is compatible with various system configurations. High diagnostic coverage and compliance with EN6047-4-1 Annex F ensure exceptional performance levels for security calculations. 
 

As part of Schaltbau’s new brand Eddicy, the C303 contactor series provides unparalleled performance and reassurance in critical applications.