Siemens 3RU2116-1FB0 Overload Relay Panel Mount

Siemens 3RU2116-1FB0 is a SIRIUS thermal overload relay for three‑phase motor protection, sized S00 with Class 10 trip characteristics and an adjustable main current setting of 3.5 to 5 A. The relay is a three‑pole device designed to protect motors from overload, phase asymmetry, and phase failure and is intended for direct mounting to Siemens 3RT contactors (Size S00), with compatibility noted for panel‑mounted installations in compact control circuits. It supports Manual or Automatic reset operation and is part of the Sirius 3RU2 family. Electrical ratings include an insulation voltage up to 690 V, surge resistance of 6 kV, and front protection rated IP20, with an operating temperature range from -40 to +60 C. Main circuit specification confirms 3 poles, aligning with typical three‑phase motor protection applications across standard industrial drives and control panels.