Application Spotlight, November 2020.
Due to the growing market for electric vehicles, the demand for charging infrastructure products is increasing rapidly. During the initial phases of the e-mobility rollout, mostly purely functional Mode 2 charging cables in accordance with IEC62752 were required. Today, manufacturers are also paying more and more attention to an attractive design with a high recognition value. There is also a strong focus on reducing the size of such devices.
A market leader in the field of high-end charging infrastructure approached ZETTLER because they desired a relay according to IEC62752 for its new generation of mode 2 charging cables with additional customized design features. Based on the experience and variety of reliable ZETTLER relays, a customized version was built according to the customer’s needs. The customer is highly satisfied with the resulting individualized relay solution, packaged in a tailor-made housing and printed in its own design.
ZETTLERs AZEV132 relay is a 1-pole power PCB relays, initially developed specifically for use in accordance with IEC62752 and, more importantly, to meet the exceedingly stringent short-circuit withstand-current requirements of this standard. These relays also have a monitoring contact to allow detection of any possible welding issues with the main contacts. The relays are approved at UL, CUR and TÜV with ratings of up to 40 A with 6k switching cycles (32 A with 50k switching cycles) for the normally open load contact and 10 mA at 12 VDC with 50k switching cycles for the normally closed monitoring contact.
A new version with switching capability of up to 50A, our AZEV140, is planned for series production in 2021.
For samples and data sheets of ZETTLER EV charging relays or similar solutions or to discuss the wide variety of application opportunities for the range of ZETTLER Relays, please contact us.
This positive trend is also evident in associated sales of charging infrastructure solutions. In particular, wall charging stations – so-called “wallboxes” – that enable EV charging with AC voltage according to charging mode 3 (IEC 61851-1) are and will continue to be in extraordinary demand. They facilitate charging of electric vehicles with voltages up to 400V, and are used in protected areas such as parking garages, carports or private homes.
A 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 
All 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.
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.
