Siemens 3RU1116-0FB0 Overload Relay

The Siemens 3RU1116-0FB0 is a SIRIUS thermal overload relay designed for motor protection on 3-pole size S00 contactors, providing adjustable protection in the range of 0.35 to 0.50 A and featuring 1 normally open plus 1 normally closed auxiliary contact for signaling. It mounts on Siemens contactors (stand-alone or mounted) and is rated for up to 690 V, with IP20 finger-safe terminals suitable for common industrial environments. Key specifications include a typical power loss of 6.6 W, surge resistance up to 6 kV, and operation from -20 to +70 C (storage -55 to +80 C) at altitudes up to 2,000 m, with shock resistance rated at 8 g / 10 ms. This 3RU1116-0FB0 overload relay provides three main current poles and is designed to complement motor protection schemes when paired with compatible Siemens 3RT contactors, delivering Class 10 thermal protection in a compact S00 package.