PCB power relays for solar inverter applications

As more solar inverters enter the marketplace, engineers are having to do more with less. Among other things, this means switching more current and higher voltages on ever-smaller footprint dimensions. To address this challenge in the development of relays for solar inverter applications, Zettler has added the AZSR165 and the AZSR190 series to its AC solar relay line-up.

With a footprint dimension of 38-mm x 33-mm, the AZSR165 and AZSR190 bring high capacity switching into a compact PCB package.

The AZSR190 is a one-pole relay rated for switching currents up to 90A in the standard version and 100A as high current version AZSR190T. It features a contact gap of 3.6-mm, 5kV dielectric strength between coil and contact and a low holding power of 310mW.

The AZSR165 series is the economy version of AZSR190 series for switching currents up to 65A. The AZSR165 has a contact gap of 3.0-mm, a dielectric strength between contact and coil and features a low holding power of 360mW.

Application-orientated loads are approved at UL and TÜV also. For example: 20A make – 65A carry – 20A break, 690VAC at 85°C for 30k cycles.

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http://www.ZETTLERelectronics.com

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