Siemens 3RT2036-1AQ20 Power Contactor, 51A, 22kW, 500V AC Coil, S2 Original Brand New

Overview: Siemens SIRIUS 3RT2036-1AQ20 Power Contactor

The Siemens 3RT2036-1AQ20 Power Contactor from the renowned SIRIUS 3RT2 series is a high-performance, 3-pole switching device optimized for reliable control of electric motors up to $22\text{ kW}$ at $400\text{ V}$. As part of the SIRIUS modular system, this contactor offers exceptional operational reliability, long endurance, and high contact stability, making it ideal for a wide range of industrial control applications.

Benefit

1. High Reliability: The SIRIUS 3RT2 design ensures high contact stability and a long mechanical service life (typically $10,000,000$ operating cycles), minimizing downtime and maintenance costs.
2. Space-Saving Design (Size S2): Compact dimensions allow for high packing density in control cabinets.
3. Future-Proof: Fully compatible and ready for IE3/IE4 motor efficiency standards, helping you meet current and future energy regulations.
4. Integrated Auxiliary Contacts: The built-in $1\text{ NO}+1\text{ NC}$ auxiliary contacts simplify wiring and reduce the need for external components, saving time and money.
5. Easy and Secure Wiring: Robust screw terminals ensure a secure, long-lasting electrical connection.

Function

The Siemens 3RT2036-1AQ20 functions as an electromechanical switch used primarily for switching electric motors. When the $500\text{ V AC}$ control coil is energized, it closes the 3 main power contacts, allowing current to flow to the motor. The integrated auxiliary contacts provide a reliable interface to the control system (e.g., PLCs, control relays) for signaling the contactor’s status (NO for “ON” status, NC for interlocks). It is suitable for applications requiring switching capacity up to $51\text{ A}$ (AC-3e/AC-3) and $22\text{ kW}$.