Input coupler relay coupler, 1 changeover contact with hard gold-plated contacts, AC/DC 24 V, screw connection, width 6.2 mm, thermal current 6A. Coupling relay with relay output (not pluggable) SIRIUS 3RQ3 for galvanic isolation, amplification, and signal adaptation between control and peripherals. Very narrow and compact. Fast and error-free wiring due to the continuous bridging of all potentials. Several labeling areas for terminal and device identification are available. Available as a coupling relay with relay output, with semiconductor output, or with plug-in relay, with various operating voltages and output currents, as well as with hard gold-plated contacts or with manual-automatic switching. Uniform accessories for all device variants, such as connection combs, clip labels, or potential separation plates, simplify selection and inventory management. SIRIUS relays - a program for all cases.