The Omron G6QG is a cutting-edge, compact PCB-mounted power relay engineered for high-performance switching in space-constrained environments. It stands out as the smallest relay in the industry capable of handling AC loads up to 480V and 55A, making it a powerful solution for demanding applications such as DC fast chargers, energy storage systems, and EV infrastructure.
Managing heat in high-current switching components is a critical challenge for developers, especially in compact systems like DC fast chargers and energy storage platforms. The G6QG relay addresses this issue utilising Omron’s design know-how with a multi-pronged thermal optimisation strategy rooted in advanced materials and structural design.
Omron has applied proprietary material technology to minimise the resistance along the current-carrying path. Lower resistance means less energy is lost as heat during operation, which directly contributes to cooler relay performance under load.
- Capable of high-capacity switching
- Contact rating of 480 VAC, 55 A
- Available with 12VDC and 24VDC coil ratings
- Coil holding voltage (35% of rated coil voltage) reduces coil power consumption to approximately 12% of rated voltage
- Contact gap: 2 mm or more (Compliant with Solar Power Generation Standard IEC62109)
- Contacts rated for 100K Mechanical and up to 30K Electrical operations
- Capable of 10 kV high withstand voltage (between coil and contact)
- Compact size (L 30.5 x W 16.0 x H 20.5 mm)
- Ambient temperature range: -40°C to +85°C (with no icing or condensation)
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The coil-side terminals—often a hotspot during energisation—have also been widened. This design change increases the surface area available for heat dissipation, allowing thermal energy to spread more efficiently and reducing the peak temperature at the terminals.
Finally, the G6QG’s internal layout has been optimised to facilitate passive cooling, leveraging Omron’s experience in compact relay design. This includes strategic placement of conductive materials and thermal pathways that draw heat away from sensitive areas.
