vol.266 March 2023

Bringing you the latest information on board design Fresh ON THE BOARD Product

High-capacity power relay G9KA-1A-E W51mm×L56.7mm×H54.5mm 1.5 times higher current than conventional ones

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

Application examples

  • ・PV inverter
  • ・UPS (uninterruptible power supply)
  • ・ESS
  • ・EV charger

Features of high-capacity power relays are also available on our website.

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!
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]

*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

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