Siemens 3RT1-24-1AC20 Contactor

Siemens Sirius 3RT2024-1AC20 is a three-pole power contactor designed for AC-3e/AC-3 duty, delivering 12 A at up to 400 V and controlling up to 5.5 kW for three-phase motors. Energized from a 24 V AC coil (50/60 Hz), it integrates easily with common control circuits and uses screw terminals for reliable, field-serviceable connections. The unit includes one normally open and one normally closed auxiliary contact, expanding interlock and signaling options, and it is sized in the S0 class with upright mounting. Suitable for motor starting and stopping in industrial machinery, conveyors, pumps, and fans, the 3RT2024-1AC20 supports compact panel layouts and straightforward expansion with matching 3RT accessories. By combining durable main contacts with a compact footprint and standard coil voltage, this contactor offers predictable performance and easy replacement within Siemens’ Sirius 3RT family for engineers designing reliable, scalable control systems. For control reliability, it provides a robust mechanical and electrical interface within standard Siemens automation ecosystems. The 24 V AC coil and 12 A rating align with common automation panels and motor control units.