Siemens 3RT2015-1AB01 Electromagnetic Contactor

Siemens 3RT2015-1AB01 is a compact three-pole electromagnetic power contactor designed for AC-3e/AC-3 duty, rated to switch up to 7 A and handle loads up to 3 kW at 400 V. It is actuated by a 24 V AC control coil (50/60 Hz) with coil terminals for A1 and A2, and provides three main normally open contacts plus one normally open auxiliary contact for signaling or interlocking in control circuits. The unit uses screw-terminal connections for the main power path and for the coil and is built in the S00 frame size, enabling space-efficient mounting in small control cabinets or starter assemblies. As part of the Siemens SIRIUS 3RT2 family, the device is widely used to start and stop three-phase motors and to switch other 400 V loads in automation environments, where a low-voltage control signal drives a higher-power mains path. The 3RT2015-1AB01 variant is often selected when a compact, coil-driven starter with a single auxiliary contact is required, delivering a simple yet reliable interface between PLC or control electronics and the motor circuit.