Author Archives: ZETTLER Announcements

ZETTLER’s AZ420 relay series End of Life (EOL) Notice

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Sept. 30th 2019

Dear Customers,

Due to diminishing global demand the ZETTLER Group has decided to discontinue all AZ420 series:

Discontinued Series: Replacement Series:
AZ420, AZ428 & AZ2428 No Drop-In replacement
AZ421, AZ429 & AZ2429 No Drop-In replacement
AZ431 & AZ439 No Drop-In replacement
Last Order Date: Last Ship Date:
October 31st 2019 TBD (see below)

We strongly recommend placing last time buy orders right away for immediate delivery.
All orders will be final: Non-Cancelable Non-Returnable.

The last ship date is targeted for end of Q1 2020/ beginning of Q2 2020. This date is subject to change.

Our Engineering and Sales teams are ready to answer your questions and assist with any engineering requests.

  • Best regards,
  • Patrick Millett
  • General Manager
  • American Zettler, Inc.

ZETTLER’ s AZ2150 use in poultry feeding systems.

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Application Spotlight, July 2019.

Electronic tools are increasingly used in many agricultural applications. In the field of animal feeding and livestock farming technology, environmental influences such as heavy contamination impose very specific requirements on the ability of electronic components to withstand these conditions.
ZETTLER´s AZ2150 use in poultry feeding systemsA market leader in the field of poultry feeding systems approached ZETTLER seeking a solution for the motor control of a screw conveyor that could withstand these extreme conditions. Based on the customer request, an epoxy sealed relay of the AZ2150 series was selected to isolate and protect the electrical contact from the external environment, ensuring a long life even under the given difficult environmental condition.
ZETTLER AZ2150 power relayAll common contact arrangements (1 Form A, 1 Form B and 1 Form C) are available for this relay. The switching capacity extends to up to 40 A at 250 V. Numerous contact ratings are approved by UL and VDE for several load types.
For similar solutions or to discuss the wide variety of application please contact us.

ZETTLER introduces high-capacity PCB mount solar relays optimized for 690VAC grid inverters.

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Product Spotlight, May 2019.

For the switching of 600VAC-800VAC circuits, large contactors have traditionally been the only viable option but new high capacity relays from ZETTLER are challenging those assumptions.
The new AZSR1160 and AZSR1180 PCB mount relays from ZETTLER provide system designers with a small form-factor alternative for switching power levels up to 165kVA. These new SPST relays can switch voltages up to 920VAC and currents up to 180A, all with a holding (coil) power of less than 0.5W. Contact gaps and insulation distances are optimized for commercial PV systems deployable up to 7000 m above sea level.
Key Features or Design Parameters include:

  • Specially designed terminals simplify thermal management and maximize lifetime
  • 3.6mm contact gap available
  • >10mm clearance/creapage
  • High surge breakdown voltage of 10kV
  • Coil voltage options from 6-48VDC
  • UL and TUV ratings
For a complete data sheet, follow the links: AZSR1160 and AZSR1180

ZETTLER introduces a number of new relays at 2018 Munich electronica

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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.
Visit us during Electronica 2018 from November 13th to November 16th in Hall A6 Booth 118.
Munich Electronica 2018
About American Zettler
American Zettler, 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

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

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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.
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

American Zettler responds to increasing DC power demand with AZDC105

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Application Spotlight July 2018

Aliso Viejo, California, USA, 13 July 2018 -In response to an increasing demand for DC power switching and high power battery charging, American Zettler is proud to release the AZDC105 series relay. The AZDC105 is the first in what will be a large family of relays designed to switch a variety of DC loads.  Recently, it seems everything has a battery. As battery sizes increase, the problem becomes how to safely isolate the batteries from their charging circuit in the event of a fault.
The AZDC105 is rated to 150A@60VDC by both UL and TUV, and it has Class F insulation standard to maintain integrity at high temperatures.  This PCB-mounted relay features internal magnets for arc-extinguishing, thus allowing for an extended life expectancy.  A wide (3.0mm) contact gap and a 1 form X (double make) contact configuration help the AZDC105 to maintain a contact-to-contact dielectric strength of 4kV.
The AZDC105 is ideal for high draw DC applications such as:  battery operated carts; inverter pre-charging; refrigerated transport; and electric vehicle charging.
Data Sheet: AZDC105
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

 

Wide-gap ‘sugar cube’ relay in actuator application for medical beds

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Application Spotlight April 2018

Innovative technical adaptations of existing and proven relay series that have been in the market for decades often help in meeting new application requirements, while keeping cost as low as possible.
A manufacturer of electric linear actuators used in medical beds and other applications was looking for a drive adjustment solution, that required a low-cost relay in common design that had to meet specific technical specs. The standard series AZ943 could meet all of these, except for the requirement of an increased contact gap
of at least 0.8 mm. ZETTLER’s engineering team delivered on this additional requirement by facilitating a technical adjustment to the relay series.
The resulting new AZ943W series is characterized by the increased contact gap of at least 0.8 mm. The relays are available as changeover (SPDT) and normally open (SPST). They have a switching capacity of up to 10 A at 277 VAC or 10 A at 30 VDC at a maximum ambient temperature of + 70 C. The electrical life is specified with up to 20,000 switching cycles.
For similar solutions or to discuss the wide variety of application opportunities for the range of American Zettler relays, please contact the author.
Datasheet: AZ943W
Datasheet: AZ943 (standard version)
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.

American Zettler’s AZ2280 power relay in R290 refrigeration application

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Application Spotlight February 2018

The trend in cooling applications away from refrigerants like R134a towards products like R290 continues at a fast pace. Propane-based refrigerants provide many advantages with respect to the environment, but with the significant caveat that propane is flammable. This presents challenges when using R290 around electronics.
A major player in the refrigerated vending machine industry approached American Zettler for a relay to be used in their propane-based systems. An IP67 certified seal provides engineers the safety they need to meet regulatory requirements in this application. In addition to adequate sealing, though, the relay also needed to have the flexibility to switch multiple load types.
The AZ2280 was an easy solution. With a wide range of UL ratings from general use to motor load to resistive, the workhorse AZ2280 can switch virtually any load a vending machine or refrigerated display case might require.
With an industry standard footprint, rugged Class F construction, and a 40A@277VAC rated contact, the IP67-rated AZ2280 can be used in an unlimited number of applications. For a complete data sheet, follow this link: https://www.azettler.com/electromechanical-relay/az2280/.
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

American Zettler adds new products to its line-up of Solar Relays

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October 17th, 2017 – The proliferation of the marketplace for solar inverters keeps forcing engineers to do more with less. Among other things, that means switching more current and higher voltages on increasingly smaller footprint dimensions. As a leader in the development of relays for solar inverter applications, Zettler Group continues to step up to the challenge, now adding the AZSR165 and the AZSR190 series to its AC solar relay line-up.
With a footprint of only 38mm x 33mm, the AZSR165 and AZSR190 bring high capacity switching into a compact PCB package.
The AZSR165 has a maximum UL switch rating of 80A@540VAC and a TUV rating of 80A@690VAC. It features a 3.0mm contact gap, a 4,000 Vrms dielectric strength, and a minimum holding power of only 350mW.
The AZSR190 has a maximum UL and TUV switch rating of 100A@480VAC. It can also be used in higher voltage applications with an ability to switch 55A at up to 800VAC.
The AZSR190 has a contact gap of 3.6mm and a dielectric strength of 5,000 Vrms. Both relays’ regulatory ratings are at 85 C operating ambient temperature.
In addition to solar inverters, the AZSR165 and AZSR190 are also suited for electric vehicle charging equipment as well as for applications in industrial lighting.
Innovation in component design is how Zettler is leading the field for the applications of tomorrow.
For complete data sheets, go to: https://www.azettler.com/electromechanical-relay/azsr165/ and https://www.azettler.com/electromechanical-relay/azsr190/.
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