3RT2015-1BF41

The 3RT2015-1BF41 belongs to the Siemens SIRIUS 3RT2 series S00 frame 3-pole power contactor family. Its coil voltage is 110V DC, a voltage level commonly found in DC operating power systems of power substations, transformer rooms, and some European standard industrial equipment. It can directly power existing 110V DC power supplies without requiring additional step-down or step-up converters. The larger frame 3RT2016-1BF41 in the same series clearly indicates a 110V DC coil specification; the 3RT2015 is its lower-order, lower-current sister model, sharing the same coil voltage designation and wiring logic. It is equipped with one normally open (1NO) auxiliary contact for operational status feedback or start-up interlocking. With its compact S00 minimum frame and screw terminal design, it can accommodate 0.5–4mm² wires, making it suitable for dense installation in space-constrained DC distribution panels.