Siemens 3RT2018-2FB41 3-Phase Power Contactor

Siemens SIRIUS 3RT2018-2FB41 is a three-pole power contactor for AC-3 motor loads, featuring a 24 V DC control coil with a factory‑integrated diode for coil suppression. This compact S00‑size device provides three main contacts plus one normally open auxiliary contact, with spring‑loaded terminals for robust wiring and mounting on TH35 rails in standard enclosures. Rated for up to 400 V AC, it typically switches 16 A at 400 V and offers about 7.5 kW load capacity at that voltage in its AC‑3 duty range, making it suitable for light‑ to medium‑duty motor control such as fans, pumps, and conveyors in industrial automation. As part of the Sirius family, it integrates smoothly with common Siemens control circuitry and accessories for coil suppression and auxiliary contact expansion.