High power PCB relay with wide contact gaps and patented thermal bridge to meet higher isolation requirements and prevent critical overheating in PV applications
Munich, Germany, June 16, 2016 – 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.
– Max. switched / continuous current80 A
– Max. switched power2,400 W or 22,160 VA
– Max. switched voltage150 VDC or 440 VAC
– Rated load 80 A at 277 VAC, resistive
– Contact gap > 2.05 mm
– Power at pickup voltage (typical)270 mW
– Power max. continuous dissipation2.0 W at 20° C (68° F) ambient
– Power temperature rise15° C (27° F) at nominal coil voltage
– Dielectric strength 5,000 Vrms coil to contact / 2,500 Vrms between open contacts
– Isolation spacing> 10 mm
– Reinforced isolationEN 60730-1 (VDE 0631, part1), EN 60335-1 (VDE 0700, part1)
– Ambient temperature -40° C (-40° F) to 85° C (185° F)
– Vibration0.062″ (1.5 mm) DA at 10-55 Hz
– Shock10 g
Building on more than a century of expertise in German precision engineering, ZETTLER GROUP is a world-class enterprise, engaged in the design, manufacturing, sales and distribution of electronic components. Its industry leadership is based on a unique combination of engineering competence and global scale. ZETTLER GROUP\“s diversified product lines are designed to provide complete solutions for component applications across a broad spectrum of industries, including relays, magnetics, displays, controls and new energy solutions. With a global network of companies ZETTLER GROUP is not only present in low cost manufacturing geographies, but also has the ability to provide customer-focused solutions in proximity to local industrial and commercial markets. Located near Munich, Germany, ZETTLER Electronics GmbH serves as the European headquarters for ZETTLER Group and operates through a comprehensive network of distributors across nineteen countries, including all the key markets of the European Union, Scandinavia, Israel, and Turkey.
Zettler electronics GmbH
82178 Puchheim (München)
Lucy Turpin Communications GmbH
+49 (0)89 – 41 77 61 – 13