Wide Contact Gap Solar Relay: ZETTLER electronics Introduces its 80 A High Power PCB Relay

The ZETTLER electronics GmbH, a manufacturer and distributor of electromagnetic and electronic components, has announced the availability of its new single pole 80 A solar relay. The innovative AZSR180 series is designed for the photovoltaic industry, to fulfill solar inverter and other application requirements.

Developed for PV applications of up to 20kVA (single phase) / 55kVA (three phase), this high power PCB relay is well suited for medium sized to larger roof top-based as well as commercial systems, deployable up to 4,000 meters above sea level. It can handle 80 A current at an energy efficient holding power of only 100 mW and offers a dielectric strength of 5,000 Vrms. The wide contact gap (> 2.05 mm) and large isolation spacing (> 10 mm) support extended requirements for use in photovoltaic applications.

A special feature of AZSR180 is a thermally-conductive copper bridge that connects the two parallel contact springs for level distribution of any excessive heat between the two contacts. Even in an extremely seldom case of a total failure of one of the two parallel-connected contacts, this “thermal bridge” prevents critical overheating of the latter contact and thus relay destruction.

With the AZSR180, Zettler has demonstrated its commitment to continue expanding its wide range of innovative AC side solar relays. The company is responding to ever-increasing inverter-design driven specifications related to physical size, energy efficiency and relay safety features. In parallel, it is also meeting demands for higher isolation requirements (e. g., IEC 62109 and UL 62109), as well as higher kVA capacities and switching currents.

For a complete listing of Zettler’s relay solutions please visit the website. For technical information and preliminary datasheets please contact ZETTLER electronics GmbH.

With output loads ranging from 0.6-10VA, ZETTLERs BV series is perfect for a wide range of products including thermostats, lighting controls, and oxygen concentrators. Dielectric strength is 4200Vrms, and external insulation is optional for increased dielectric withstand between the component and the PCB. ZETTLER BV transformers are also ideally suited for the alternative energy market - Solar inverters and smart grid meters are just two possible applications.

ZETTLERs highly automated production lines makes the BV series price competitive when compared to similarlysized open frame models. Samples are available on request.

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About Zettler electronics:
ZETTLER electronics, based in Puchheim (near Munich), is an internationally operating manufacturer and distributor of electromechanical components and assemblies. ZETTLER offers its customers a carefully coordinated product range of relays, magnetics, LCD modules, switches and fans for latest-generation industrial and consumer electronics.