Ultra-fast solid-state DC breakers
Switching, controlling and converting power
Custom-specific solutions
Certified products
Personal consultation
Our Astrol ultra-fast DC circuit breakers are critical components in modern direct current (DC) power distribution systems. Designed to interrupt fault currents within microseconds, it protects sensitive electrical equipment from damage caused by short-circuits or power overloads. As the world moves toward more electrified and digitized energy networks, the demand for reliable and efficient DC protection has never been higher. From marine, renewable energy, data center power systems, our solid-state DC breakers are essential for ensuring safety, stability, and uptime. Our range of Astrol solid-state DC breakers is initially designed for maritime applications and ranges from 0.35 kA to 6 kA with a nominal voltage of 1.5 kV. However the application of our breakers are not limited to the maritime industry. Based on the same system topology we offer DC breakers for data center application.
Explore our full range of solutions
Advanced engineering for high-speed DC breaker technology
Unlike traditional mechanical breakers, an Astrol high-speed DC circuit breaker uses semiconductor-based switching technology to achieve ultra-fast fault isolation. By combining IGBT modules, MOVs, and advanced control electronics, our solid-state DC breakers can detect and interrupt short circuits in just a few microseconds. Typical configurations include rated voltages up to 1.5 kV DC, rated currents between 350 A and 5000 A, and breaking times of 6 – 10 microseconds. This rapid response minimizes stress on cables, converters, and connected systems, preventing cascading failures and extending equipment lifetime.
Applications in demanding environments
Ultra-fast solid-state DC breakers are used in marine DC grids, electric-mobility infrastructure, offshore platforms, and hybrid power systems. Their ability to handle high voltages and currents while maintaining a compact footprint and low-maintenance requirements makes them ideal for next-generation DC networks. Our circuit breakers can handle temperatures from –25 °C to +55 °C, protection ratings up to IP66, and are certified by DNV, Lloyd’s Register, ABS and CCS for use in marine environments.
Schedule an online meeting with one of our technical experts
Astrolkwx delivers Astrol high-speed DC breakers that enable ultra-fast fault interruption (withing microsensonds) engineered for maximum reliability and performance in critical and high-demanding environments. Our semiconductor-based solutions enable precise, autonomous fault detection and seamless integration into complex DC systems. Schedule an online meeting today with one of our technical, power electronics specialists to explore how our solid-state DC breakers can improve safety, efficiency, and reliability of your power systems.
Proven succes in real applications
Kongsberg Maritime integrates solid-state DC breakers in CSOV vessel range
Astrol’s 1.5 kV, 3 kA solid-state DC breakers have been integrated into the multi-bus ring DC grid systems of next-generation Construction Service Operation Vessels (CSOVs), developed in partnership with Kongsberg Maritime. Designed for offshore wind farm operations, these DNV-classed vessels demand high reliability, redundancy, and safety—requirements met by Astrol’s ultra-fast protection technology. This collaboration sets a new standard for sustainable, future-proof maritime electrification.
Serco and Astrolkwx: A collaboration on NOMARS autonomous shipping project
Serco and Astrolkwx collaborated on the NOMARS autonomous shipping project, aiming to develop advanced electrical power systems for unmanned surface vessels (USVs). Josiah Myer, an Electrical Engineer at Serco Inc., highlighted the challenges faced in sourcing equipment that met stringent specifications while integrating seamlessly into the ship's infrastructure.
