Siemens SIRIUS 3RT2023-2AP04 Power Contactor, 9A, 4kW (AC-3), 230V AC Coil, 3-Pole, Size S0, Spring-Loaded Terminals Original Brand New

Overview

The Siemens SIRIUS 3RT2023-2AP04 Power Contactor is a high-performance switching device engineered for starting and controlling AC motors, as well as switching other resistive and inductive loads (AC-3e/AC-3 operation). Part of the trusted SIRIUS 3RT2 series, this robust 3-pole contactor is rated for $9\text{ A}$ (at $400\text{ V}$ AC-3) and $4\text{ kW}$. It features an $\text{AC }230\text{ V}$ control coil and space-saving Size S0 dimensions. A key feature is the quick and reliable spring-loaded terminal connection technology for both the main and auxiliary circuits, ensuring fast and vibration-proof wiring.

Benefit & Advantages

• Quick Wiring: The advanced spring-loaded terminals drastically reduce wiring time and complexity compared to screw terminals, offering a permanently reliable, vibration-proof connection.
• High Reliability: Siemens SIRIUS 3RT2 series is known for its long mechanical and electrical service life ($10\text{ million}$ operating cycles typical), reducing downtime and maintenance costs.
• Space-Saving Design: The compact Size S0 design allows for high packing density in control cabinets and enclosures.
• Integrated Auxiliary Contacts: Comes standard with $2\text{ NO}+2\text{ NC}$ auxiliary contacts in a removable block for flexible control and monitoring applications.
• Global Standard Compliance: Meets international standards (IEC, UL, CSA, etc.) for worldwide use in industrial automation and motor control.

Function

The Siemens 3RT2023-2AP04 functions as an electromechanical switch. When the $230\text{ V AC}$ control coil is energized, the main contacts close, connecting the 3-phase power supply (up to $690\text{ V}$) to the load, typically a motor. Simultaneously, the integrated $2\text{ NO}+2\text{ NC}$ auxiliary contacts switch state, providing signals for interlocking, control logic, and feedback to a PLC or control system. Its $9\text{ A}$ (AC-3) rating makes it ideal for standard motor starting applications up to $4\text{ kW}$.

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