Siemens 3RT2023-1NB30 SIRIUS Power Contactor, 9A, 4kW, 21-28V AC/DC, S0 Original Brand New

Overview

The Siemens 3RT2023-1NB30 power contactor from the highly successful SIRIUS modular system is an essential component for high-performance motor control applications. This 3-pole contactor is engineered for AC motor switching (AC-3e/AC-3 up to 4 kW at 400 V) and general-purpose power switching. It boasts an operating current of 9 A and features a versatile 21-28 V AC/DC control voltage for flexible installation. The compact Size S0 unit comes equipped with a pre-installed integrated varistor for coil protection and robust screw terminals for secure wiring of the main circuit and auxiliary contacts.

Benefits & Advantages

• Optimized Performance: Meets the standards for AC-3e/AC-3 switching, making it ideal for standard motor starting and control.
• Coil Protection Included: The integrated varistor provides crucial surge suppression, protecting the coil and extending the contactor’s service life, reducing the need for external components.
• Global Standard: Part of the SIRIUS modular system, ensuring high quality, proven reliability, and compatibility with other Siemens components like the SIRIUS 3RV2 motor starter protectors.
• Versatile Control: The wide-range 21-28V AC/DC coil allows for use with both AC and DC control signals, simplifying inventory and application planning.
• Compact Design: The Size S0 form factor saves valuable space in control cabinets and panels.

Function & Application

The 3RT2023-1NB30 power contactor functions as a remotely controlled switch, primarily used for:

1. Motor Switching: Starting, stopping, and reversing 3-phase AC motors up to 4 kW.
2. Load Switching: Controlling resistive loads, heating elements, and lighting systems.
3. Automation Systems: Integrating into complex industrial control circuits, machines, and processes, leveraging its $1\text{ NO}+1\text{ NC}$ auxiliary contacts for interlocking and feedback signaling.

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