Cost-effective relays designed for the use in solar inverter applications

Zettler Electronics has introduced the new AZ SR131 series. The miniature power solar relays are capable of switching up to 35A at 277VAC. Coil voltages range from 5VDC up to 48VDC. The relay is designed for the use in solar inverter applications according IEC 62109 but can be used in many other applications as well. The dielectric strength is 4.5kV between coil/contact. The relays are able to withstand 10kV surge impulse. In the standard version the series has a contact gap of 1.8mm and a dielectric strength of 2.5kV between open contacts. A wide contact gap version (2.3mm) is also available, with dielectric strength of 3.5kV between open contacts. The electric life expectancy is specified with 30,000 cycles at 35A 277VAC at an ambient temperature up to 85C. The relays are available with silver tin oxide SPST-N.O. (1 Form A) contacts. Class F insulation (155C) is standard. The power relays meet RoHS, REACH as well as IEC 61810-1 for the use in low voltage equipment and UL 508 for industrial control panels. Versions compliant to IEC-60335-1 (GWT-Glow Wire Testing) for household appliances are also available. With UL and TÜV long life ratings, their 35AMP miniature power relays are both cost-effective and high performance products.