The preferred successor is 3RQ2000-2CW01. Coupling relays in industrial enclosure 3 change-over contacts hard gold-plated Wide voltage range 24 V to 240 V AC/DC Spring-type terminal Coupling relay in industrial enclosure SIRIUS 3RS18 for coupling control signals to and from a controller in a 22.5 mm industrial enclosure. One product covers all voltages. Reduction in the number of versions results in cost savings. High level of contact reliability even at low currents. Devices are available in combi-voltage or wide voltage range versions, with one to three changeover contacts, with electronics-compatible outputs (hard gold-plating) as well as with screw-type or spring-loaded terminals. Labels are available as accessories. SIRIUS relays – one range for every application.