OMRON is expanding its portfolio for e-mobility and energy technology with a new power relay for particularly demanding applications. The G9EK-1-EX expands the proven G9EK screw terminal relay series and is designed for switching capacities of up to 250 A at 500 VDC – a clear step towards higher power density and safety reserves.
The new normally open relay is primarily aimed at applications in the charging infrastructure for electric vehicles, in renewable energy systems, and in industrial e-mobility solutions. This is made possible by an optimized internal structure that achieves a contact resistance of only 15 milliohms and a coil power of only 4 watts. The G9EK-1-EX thus combines low energy consumption with low power dissipation – while at the same time offering significantly higher switching current.
Despite the increased performance data, the relay remains compact: with dimensions of 47.7 × 86 × 64.2 millimeters, it corresponds to the design of the previous G9EK-1 models. In many applications, it can thus be used as a space-saving alternative to classic high-current contactors. Compared to the previous G9EK-1-E, which is designed for 200 A at 500 VDC, the new version not only expands the range of applications but also increases the safety margins.
Omron paid particular attention to mechanical robustness. The contact mechanism of the G9EK-1-EX is designed for improved shock and vibration resistance and can withstand loads of up to 100 g. This makes the relay ideal for use in demanding environments, such as industrial driverless transport vehicles or mobile energy systems. In addition, the connection structure reduces magnetic repulsive forces that can occur at very high currents or short circuits – an important factor for service life and reliability.
The relay is also electrically equipped for extreme situations: it can handle interruption currents of up to 1000 A at 400 V and withstand voltage pulses of up to 4000 V. The gas-free design not only ensures safe operation, but also simplifies the internal architecture. Omron also points out the CO₂-neutral properties of this design.
The performance profile is rounded off by fast switching times of 50 milliseconds when energized and 30 milliseconds when de-energized, as well as a guaranteed mechanical life of 200,000 switching cycles. With the G9EK-1-EX, Omron is clearly positioning itself in the growing market for powerful, compact, and reliable high-current relays – especially for the next generation of e-mobility and energy infrastructure.
