Siemens 3RT1916-2EC31 is a solid-state, time-delayed auxiliary switch module that attaches to SIRIUS 3RT contactors. It provides one normally open (NO) and one normally closed (NC) auxiliary contact and features an on-delay setting adjustable from 5 seconds to 100 seconds. The module operates on AC supply voltage 100–127 V and is designed for mounting onto 3RT1-series contactors to enable delayed signaling in control circuits.
