Siemens 3RU2116-1FB0 is a SIRIUS thermal overload relay rated for 3.5 to 5 A, designed for motor protection and intended for direct mounting on Siemens SIRIUS 3RU2 frame-size S00 contactors. It provides current-dependent protection for three-phase motors with screw terminals on both the main and auxiliary circuits and offers a manual or automatic reset option. With insulation rated up to 690 V, a surge withstand of 6 kV, and a -40 to 70 C operating range, this relay is built for rugged motor protection in control panels.
