High power PCB relay provides enhanced carry current with the same compact footprint

Omron Electronic Components Europe has released the G7EB-E2 high-power PCB relay. The relay is a new, higher-capacity variant of the G7EB series, featuring enhanced current carrying and breaking capacity. It provides a low footprint and cost-effective yet highly reliable alternative to contactors.

Rated for 150A of continuous carry current and switching current, the G7EB-E2 is suitable for up to 100 kW at three-phase 400VAC, 200kW at three-phase 800VAC, and 7kW at 48VDC. Suitable applications include PV inverters, EV chargers and UPS. The relay has the same dimensions and weight as its predecessor, the G7EB-E, delivering increased capacity within the same footprint. It has a wide contact gap of 3.6mm, with an extremely low contact resistance of 5mOhm.

As well as carrying, the device also breaks at 150A for up to 100 operations at 480VAC, and 30 operations at 800VAC. This makes the device ideal for supplying safe and reliable system operations with an emergency stop function, eradicating the necessity for other breaking devices, and facilitating smaller, lighter product designs with higher power capacity. The relay is available in two coil voltage variations of 12VDC and 24VDC.

In PV inverter applications, the device can potentially be used to connect and disconnect the main circuit to and from the utility grid. Its contact gap of 3.6mm is compliant with the requirements of IEC 62109. For industrial UPS, its 50kVA to 100kVA outputs can be employed to open or close the input and output of AC main circuits, decreasing the likelihood of failures while improving safety and resilience between grid and load. Alternatively, it can be applied to 48VDC battery and power supply systems to connect and disconnect safely from the DC supply.