Siemens 3RU2116-1JC0 Overload Relay Sirius Series

The Siemens SIRIUS 3RU2 thermal overload relay, model 3RU2116-1JC0, is a standalone protection device designed for motor protection and intended to mount directly to S00-size contactors; it covers a current range of 7.0 to 10 A and carries a Class 10 thermal rating for reliable protection of three‑phase motors. Rated for up to 690 V AC (Ue) and optimized for motor circuits, this relay dissipates about 6.6 W at rated current (2.2 W per pole) in the hot state, and it features spring‑loaded terminals for both main and auxiliary circuits with a hand/automatic reset option. The 3RU2116-1JC0 comes with a built‑in auxiliary contact configuration of 1 NO / 1 NC, enabling signaling and interlock functions in control circuits. Industry listings and Siemens pages place it within the Sirius 3RU2 family, designed for direct mounting on contactors and used to protect motors against overload and phase loss, making it a compact, standard choice for motor protection in S00 installations.