Siemens 3RU1116-1DB0 Overload Relay

Siemens 3RU1116-1DB0 Overload Relay is a Sirius thermal overload device that mounts to compatible contactors in the S00 size to protect small-motor circuits. It provides adjustable overload protection across the 2.2–3.2 A range (2.2…3.2 A) and features a 1 normally open plus 1 normally closed auxiliary contact for signaling or interlocking, with screw-terminals for both main and auxiliary circuits and a Manual-Automatic-Reset option. Key ratings include a three-pole main circuit, insulation voltage up to 690 V, front IP20 protection, ambient operating temperature from -20 to +70 C (storage -55 to +80 C), shock resistance of 8 g/10 ms, and typical power loss of 6.6 W; it is designed for direct mounting to Siemens contactors. Siemens lists this model as no longer available and indicates 3RU2116-1DB0 as the preferred successor.