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OMRON launch 800 VAC 200 Amp rated PCB relays with ultra-low contact resistance for high power applications samples available from Anglia

Date Published : 18/03/2022 Share with:

OMRON have released the compact, efficient G9KA PCB power relay rated at 800V / 200A, the relay was initially designed for power conditioners (PCS) associated with renewable micro power generation, as well as inverters and UPS systems but is also suitable for use in many other applications where demanding loads need to be handled.

OMRON identified that heat generation has become a major issue for customers in high power applications as density of components increases, their design team have innovated in terms of the structure of the G9KA relays, the materials used and the manufacturing quality to achieve an exceptionally low contact resistance, facilitating the customer’s thermal design and reducing design cost.

High power applications demand high energy efficiency as well as low heat generation, the OMRON G9KA is an ideal relay solution because it benefits from an exceptionally low contact resistance for this class of relay at just 0.2mΩ, this helps reduce the heat generated in the relay by over 30% compared with current equivalent devices on the market. The G9KA provides ultra-low initial and end of life contact resistance resulting in low heat dissipation, this helps to minimize heat stress at PCB level, extending operational life of end products. Furthermore this also reduces the need for thermal management components such as heat sinks or fans reducing overall system complexity and cost whilst at the same time improving reliability by reducing heating of the surrounding components.

Not only have OMRON developed a high power, high energy efficient relay with low heat generation, they have also managed to package it in a housing measuring just 50mm x 50mm x 50mm, yes you did read that correctly, the G9KA boasts a 30% smaller footprint and lower height than an equivalent rated contactor.

The G9KA relay has PCB terminals and is rated for use at temperatures from -40°C up to 85°C, it has a SPST-NO (1a) contact arrangement constructed from an Ag Alloy material with a rated carry current of 200A, max. switching current of 200A and max. switching voltage of 800VAC. The relay is available with a choice of 12V and 24V coils with resistance and rated currents of 28.8Ω/417mA and 115.2Ω/208mA respectively. The relay is also UL Recognized, and EN/IEC TUV, UL and CQC Certificated.

G9KA Key Features

  • Rated load: 50A at 800 VAC/800 VAC 150 A switch on, 200 A carry current, 200 A switch off
  • Contact Form SPST-NO (1a)
  • Option of 12 VDC and 24 VDC coil voltages
  • 10 kV impulse withstand voltage
  • Contact gap ≥4.0 mm (Applied to VDE0126)
  • Initial contact resistance ≤0.2 mΩ (when 200 A of current is applied); End of Life (EOL) ≤0.3 mΩ
  • Power consumption with holding voltage is approx. 1W (when applying holding voltage at 45%)
  • 100,000 mechanical operations min. (at 18,000 operations/h)
  • UL Recognized, EN/IEC TUV, UL and CQC Certificated
  • Operating Temperature range -40°C to +85°C


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Click here to download the G9KA Datasheet

Anglia are offering customers FREE samples of the G9KA compact and efficient PCB power relay from OMRON, please fill in the form below to register now.




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