Siemens SIRIUS 3RT2035-3AK60 Power Contactor, 41A, 18.5kW, 110/120V AC Coil, Screw/Spring Terminal, Size S2 Original Brand New

Overview: Siemens SIRIUS 3RT2035-3AK60 Power Contactor

The Siemens SIRIUS 3RT2035-3AK60 is a high-performance, 3-pole power contactor from the globally renowned SIRIUS 3RT2 series, designed for reliably switching motors and other resistive loads. Engineered for demanding industrial environments, this compact Size S2 contactor handles a substantial operational current of 41 A and a motor power rating of 18.5 kW at 400 V (AC-3/AC-3e).

It features an efficient 110 V AC (50 Hz) / 120 V AC (60 Hz) control voltage coil and comes standard with integrated 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts for control circuit integration.

The main circuit utilizes robust screw terminals, while the control and auxiliary circuits feature modern spring-loaded terminals, offering quick, vibration-proof, and maintenance-free wiring. As a core component of the SIRIUS modular system, the 3RT2035-3AK60 ensures seamless integration and high operational reliability.

Benefit

1. High Reliability: Part of the established Siemens SIRIUS modular system, ensuring high contact reliability and a long mechanical service life (typically 10 million operating cycles).
2. Fast & Secure Wiring: The innovative spring-loaded terminals for the control and auxiliary circuits provide a quick, permanent, and vibration-proof connection, significantly reducing installation and maintenance time compared to traditional screw connections.
3. Space-Saving Design: Its compact S2 size allows for efficient use of space in control cabinets and panels.
4. Global Compliance: Approved for worldwide use (e.g., IEC, UL/CSA, CCC), making it suitable for international projects and machinery.
5. IE3/IE4 Ready: Optimized for use with high-efficiency IE3/IE4 class motors.

Function

The Siemens 3RT2035-3AK60 functions as an electromechanical switching device for remotely controlling the power supply to industrial equipment, primarily three-phase AC motors. When the control coil receives the specified $110\text{ V AC }/120\text{ V AC}$ voltage, it magnetizes and closes the three main power contacts, allowing the $41\text{ A}$ current to flow to the load. The integrated auxiliary contacts mirror the main contact status, providing essential signaling and interlocking functionality within the overall control circuit.

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