ZETTLER’s AZ764 in use in high-efficiency pumps for heating technology

ZETTLER Relays – Application Spotlight, January 2019.

Energy saving plays a major role in all areas of life. High-efficiency pumps have become indispensable in building technology in the heating technology sector in particular.

These electronically controlled circulating pumps have a very low power consumption during operation. But at power-up they cause very high inrush peaks. This must be taken into account when selecting the relays to control the pump. Precisely for this requirement, ZETTLER, in cooperation with the market leaders in the field of heating technology, has developed a relay that meets all requirements.

Based on a customer’s requirement for an electrical life of up to 650,000 cycles, with inrush peaks up to 42A when the circulation pump was switched, ZETTLER engineers were able to offer a solution based on the AZ764 series of power relays. Modifications have ensured that no welding of the contacts will result in failure of the relay during the entire service life.

For similar solutions or to discuss the wide variety of application opportunities for the range of ZETTLER electronics relays, please contact:

ZETTLER electronics
Tel.: +49-89-800-97-0
office@ZETTLERelectronics.com
www.ZETTLERelectronics.com

ZETTLER Magnetics 1-Watt Switch Mode Power Supply in High Volume Smart Lighting application.

ZETTLER Magnetics – Application Spotlight January 2019. ZETTLER Magnetics continues to support the burgeoning Smart Lighting control market with its expanding range of Switch Mode …

ZETTLER Magnetics range of Ferrite Switching Transformers supports large spectrum of Custom Power Supply solutions

ZETTLER Magnetics – Product Spotligt October 2018. Over recent years, ZETTLER Magnetics has expanded its range of High Frequency Ferrite Switching Transformers to now cover more th…

Temperature and Humidity Resistant LCD Modules – Display Solutions for Solar Inverter or EV Charging Applications

AZ Displays – Application Spotlight – October 2018.

ZETTLER’s AZSR165 in a Hybrid-Solar-Inverter System with Scalable Battery Storage

ZETTLER Relays – Application Spotlight, October 2018.

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.

For similar solutions or to discuss the wide variety of application opportunities for the range of ZETTLER electronics relays, please contact:

ZETTLER electronics
Tel.: +49-89-800-97-0
office@ZETTLERelectronics.com
www.ZETTLERelectronics.com

ZETTLER introduces a number of new relays at 2018 Munich electronica

ZETTLER electronics – Product announcement

Focusing on solar, e-mobility and multiple other applications, ZETTLER Group will showcase various new relays at this year’s November electronica show in Munich, Germany.

The new  AZEV116 and AZEV132 series are next-generation IEC mode 2 Electric Vehicle (EV) charging relays in development for release in 2019. These relays are designed to survive high momentary currents that may occur on short circuits, thus ensuring outstanding reliability without contact welding. The AZEV116/132 series will also feature a potential monitoring contact, as required by IEC62752:2016, making these types of relays ideally suited for EV and other applications demanding high security and safety demands.

The newly developed AZSR1160 is a 160 A extreme high-power PCB Solar Relay, designed for PV applications of up to 36,8 kVA (single phase 230 VAC) / 111 kVA (three phase 400 VAC) – a highly attractive, small footprint substitute for conventional contactors. This relay is suitable for large commercial / rooftop-based PV systems and commercial solar fields.

AZSR190 is a 90 A high-power PCB relay for solar inverters. Developed for PV applications of up to 23 kVA (single phase 230 VAC) / 69 kVA (three phase 400 VAC) this relay is well suited for medium sized to larger roof top-based / commercial systems.

AZSR165 is a 65 A economy version of the new AZSR190 series. Developed for PV applications of up to 18,4 kVA (single phase 230 VAC) / 55 kVA (three phase 400 VAC) this relay is well suited for medium sized to larger roof top-based / commercial systems. ZETTLER recently also adapted this relay for a DC-side solar battery storage application, supporting a major industry player in clean home-energy solutions.

ZETTLERs  AZSR131 was initially designed as a solar relay for residential and small roof top-based PV systems of up to 8 kVA (single phase 230 VAC) / 24 kVA (three phase 400 VAC).  While not a new relay, ZETTLER continues to find new application extensions for this relay beyond just PV solar inverters. AZSR131 is suitable for diverse applications such as heat-pump solutions and Electro Vehicle wall box charging units and is, therefore, rapidly becoming a multi-purpose relay.

AZDC6 is a 600VDC miniature relay for RSS (Rapid Shutting Down System) for Solar installations, scheduled for 2019 release. The compact size allows for a thinner design of certain RSS boxes, that are deployed as part of compliance with 2017 NEC 690.12.

For similar solutions or to discuss the wide variety of application opportunities for the range of ZETTLER electronics relays, please contact:

ZETTLER Electronics, Europe
Junkersstr. 3
82178 Puchheim
Germany
Tel: +49(0)89-800 97 0
office@zettlerelectronics.com

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