Solar inverter solutions including scalable battery storage options are becoming increasingly popular.

One of the application challenges in these systems is to connect/disconnect the battery block to/from the inverter’s control circuitry.

A major clean home automation company approached Zettler seeking a solution that required switching of a 125 VDC battery while carrying load and charge currents of up to 50 Amps. Typically this would be an application scenario for high power DC contactors.

In close cooperation with customer engineering, Zettler’s team found an appropriate solution through reduction of the switching current down to 1.5 Amps by means of smart software controls. This measure fully enables AZSR165, a cost-effective solar AC relay, to fulfill the requirements of switching the DC path.
This elegant application-extension for one of many Zettler AC solar relays provided significant cost savings compared to the use of a DC contactor.

Datasheet: AZSR165

For this an many other application examples of American Zettler relays, please visit www.azettler.com

About American Zettler
American Zettler, Inc., a Zettler Group company, produces over fifty different types of relays to meet the many requirements of commercial and industrial applications. Because of their high reliability, American Zettler relays are used in a wide range of demanding applications including telecommunication and security systems, solar inverters and electric vehicle charging equipment, home appliances, lighting and energy management controls, HVAC/R, industrial controls and many other types of electric and electronic equipment. www.azettler.com