electrical rss news
Universal coupling relays with user-friendly connection and wide-range input
• High-grade industrial enclosure with user-friendly connection simplifies handling, installation, servicing and wiring
• Sirius 3RQ2: New series of coupling relays for universal application reduces model diversity with wide-range input from 24 to 240 volt AC/DC
• Typical applications include galvanic isolation, signal amplification and voltage conversion as well as overvoltage and EMC protection
Sirius 3RQ2 from Siemens is a new range of coupling relays with truly universal application scope. With their minimal mounting depth of 90 millimeters and wide-range power supply from 24 to 240 volts AC/DC, these relays are available in variants with between one and three changeover contacts. The Sirius 3RQ2 coupling relays are replacing the 3RS18 series, but with a drastically reduced number of variants due to the availability of a wide-range input. Use of the same terminal assignment and minimization of the variant options makes changeover to the new Sirius 3RQ2 coupling relay series both fast and simple to implement. The new relays are also designed for optimum coordination with Simatic S7 controllers and Sirius contactors. Typical applications include galvanic isolation, signal amplification and voltage conversion, for instance from 24 V DC to 230 V AC, as well as overvoltage and EMC protection for control systems. The Sirius 3RQ2 variants with hard gold-plated contacts for switchiOriginal Article