Siemens 3RT2023-2AL24 SIRIUS 3RT2 Power Contactor, 9A, 4kW, 230V AC Coil, Size S0, Spring-Loaded Original Brand New

Overview

The Siemens SIRIUS 3RT2023-2AL24 Power Contactor is a high-performance, 3-pole switching device engineered for reliable and efficient control of motors and other resistive loads up to $\text{4 kW}$ ($\text{9 A}$) at $\text{400 V}$. As part of the modular SIRIUS 3RT2 system, this contactor offers a compact, space-saving Size S0 design with integrated flexibility. It is designed for the $\text{AC-3e/AC-3}$ utilization category, making it suitable for modern, high-efficiency $\text{IE3/IE4}$ motors.

Key Features & Technical Specification

• Product Number: 3RT2023-2AL24
• Series: Siemens SIRIUS 3RT2
• Application: Power Contactor for Motor Switching
• Rated Operational Current (Ie​) ($\text{AC-3e/AC-3}$): $\text{9 A}$ ($\text{4 kW}/\text{400 V}$)
• Poles: $\text{3-pole}$ main circuit
• Control Supply Voltage (Us​): $\text{230 V AC}$ ($\text{50/60 Hz}$)
• Auxiliary Contacts: Integrated $\text{2 NO}+\text{2 NC}$ (Normally Open + Normally Closed)
• Connection Type: Spring-loaded terminals (fast, vibration-proof, and maintenance-free wiring)
• Size/Frame: S0
• Auxiliary Switch: Removable auxiliary switch (for flexibility in control circuits)
• Compatibility: Part of the modular SIRIUS system, allowing for easy combination with other protective and switching components.

Benefit

1. Fast & Secure Wiring: The innovative spring-loaded terminal technology ensures fast installation, a secure electrical connection, and reliable, vibration-proof operation, significantly reducing maintenance time.
2. Space-Saving Design: The compact Size S0 minimizes panel space requirements, allowing for higher density installations in industrial control cabinets.
3. High Reliability: Built to Siemens' rigorous quality standards, the SIRIUS 3RT2 series offers high contact reliability and a long mechanical service life (typically $10$ million switching cycles).
4. Versatile Control: Features integrated $\text{2 NO}+\text{2 NC}$ auxiliary contacts for extensive flexibility in interlocking, signaling, and complex control circuits.
5. Global Compliance: $\text{IEC}$ and $\text{UL/CSA}$ approved, ensuring suitability for worldwide use and $\text{IE3/IE4}$ motor readiness.

Function

The $\text{3RT2023-2AL24}$ functions as an electrically operated switch. When the $\text{230 V AC}$ control coil is energized, it closes the three main power contacts, connecting the motor to the power supply. The integrated $\text{2 NO}+\text{2 NC}$ auxiliary contacts change state simultaneously, providing feedback to the control system (e.g., PLC) and enabling safety or interlocking functions. De-energizing the coil opens all contacts, safely interrupting the power circuit.