Siemens 3RU1116-1FB1 is a standalone thermal overload relay in the S00 frame designed to protect three-phase motors. It features an adjustable overload release from 3.5 to 5 A and includes a 1NO and 1NC auxiliary contact, with screw terminals for the main and control circuits, and a Class 10 trip rating. Rated for up to 690 V AC-3, it offers IP20 front protection, an operating ambient range of -20 to +70 C, and typical power loss around 6.6 W, making it suited for stand-alone motor protection in industrial control panels.
