Siemens 3RU2116-0FB0 Overload Relay 0.35-0.50A

Siem­­ens 3RU2116-0FB0 is a three‑pole thermal overload relay for motor protection, adjustable from 0.35 to 0.50 A and sized for Siemens S00 contactors. It mounts to compatible Siemens contactors with screw terminals on both the main circuit and the auxiliary circuit for straightforward wiring, and supports manual or automatic reset for controlled protection. Rated for insulation up to 690 V, this relay carries Class 10 protection and is designed as a stand‑alone device within the 3RU2 family to guard motors against overload and phase‑related heating. In practice, it provides reliable, compact protection when paired with Siemens 3RT contactors to form a complete overload protection solution.