vol.266 March 2023
![High-capacity power relay G9KA-1A-E W51mm×L56.7mm×H54.5mm 1.5 times higher current than conventional ones](/eu-en/sites/components.omron.com.eu/files/2023-03/onboard_266_2_01_en.png)
![Special ONBOARD](/eu-en/sites/components.omron.com.eu/files/2022-07/icon_flag06_en.png)
A new high-capacity type of 1000VAC 300A is now available
in the G9KA series
Demand for high-capacity distributed PV inverters has been increasing in recent years in terms of stable power supply, capital investment, installation cost reduction, and maintenance man-hours.
However, the higher the capacity, the higher the temperature of the board and mounted components, resulting in a shorter product life.
In addition to the conventional 200A type, OMRON has added a new high-capacity type to the series with a high current switching of 300A and a design structure that suppresses temperature rise.
OMRON’s relays for PV inverters
![G9KA-1A Low heat generation, [NEW] G9KA-1A-E Low heat generation & High heat dissipation](/eu-en/sites/components.omron.com.eu/files/2023-03/onboard_266_2_02_en.png)
Application examples
- ・PV inverter
- ・UPS (uninterruptible power supply)
- ・ESS
- ・EV charger
Features of high-capacity power relays are also available on our website.
![](/eu-en/sites/components.omron.com.eu/files/2023-03/onboard_266_2_03_en.png)
For more information, visit our website.
Click on the banner images below on the website to view related content, including developer interviews and videos.
![Here's the trick!](/eu-en/sites/components.omron.com.eu/files/2022-07/icon_flag02_en.png)
G9KA-1A-E 1000VAC 300A realized by “heat suppression” and “heat dissipation”
By focusing on both heat suppression and heat dissipation structures and incorporating them into the design, the G9KA series has achieved a high current of 300A class while maintaining the low heat generation that is a feature of the G9KA series.
![Heat suppression structure [Double-break twin structure that suppresses heat by shunting current (Parallel current-carrying paths for shunting)] + Heat dissipation structure [High heat dissipation terminal structure with high legs for better air passage] => Relay temperature rise can be suppressed, thus improving performance in various aspects. [High capacity: Energizes and interrupts 1000VAC 300A, the highest among OMRON’s high-capacity power relay products] [Long life: Reduced PCB damage due to high temperatures] [Downsizing: Reduction of the number of heat-dissipating parts enables reduction of the PCB area] [Energy-saving: Improved power generation efficiency by reducing energy waste due to heat generation]](/eu-en/sites/components.omron.com.eu/files/2023-03/onboard_266_2_04_en.png)
*1. The product photo above shows the G9KA-1A. The features of the heat suppression structure are the same.
* Contents as of February 2023.
In the interest of product improvement, specifications are subject to change without notice