The Siemens 3RQ4052-1SM30 is an output optocoupler relay from the SIRIUS 3RQ4 family, designed as a narrow coupling relay for control panels. It switches a single normally-open contact at 24 V DC, rated for a thermal current of 6 A, and connects via screw terminals. The 6.2 mm width saves DIN-rail space in dense cabinets.
At 6.2 mm wide, it fits between other narrow SIRIUS modules without wasting rail real estate.
