Siemens AG 3RU2116-1CB0 Thermal Overload Relay

Siemens 3RU2116-1CB0 is a compact SIRIUS thermal overload relay for three‑pole motors, adjustable from 1.8 to 2.5 A, size S00, Class 10, designed to mount on a contactor's main circuit with screw terminals. It includes a 1NC/1NO auxiliary contact and supports manual or automatic reset, with screw terminals for both the main and auxiliary circuits. The relay is rated for up to 690 V AC and is compatible with Siemens 3RU2 contactors for motor protection; a typical power rating is about 0.75 kW. This overload relay is commonly used in industrial panels to provide compact, dependable motor protection in conjunction with Siemens SIRIUS controllers.