Siemens 3RT2023-1BB44-3MA0 Power Contactor, 9A, 24V DC, S0 Original Brand New

Siemens SIRIUS 3RT2023-1BB44-3MA0 Power Contactor, 9A (AC-3), 4 kW

The Siemens 3RT2023-1BB44-3MA0 Power Contactor is a high-performance, compact switching device from the SIRIUS 3RT2 modular system, designed for reliably switching motors and other resistive loads up to 4 kW at 400 V (AC-3). It is engineered for industrial control and automation applications where high contact reliability and space efficiency are critical.

• Compact High-Performance: Size S0 design saves panel space while handling a substantial 4kW load.
• Integrated Auxiliary Switches: Comes with a pre-mounted and captive block of 2 NO + 2 NC contacts, simplifying wiring and reducing assembly time.
• Global Standard Compliance: IEC and UL/CSA approved, making it suitable for worldwide use.
• DC Control: Operates with a standard 24 V DC control voltage, ideal for modern control systems.

Function

The 3RT2023-1BB44-3MA0 is specifically tailored for demanding switching tasks. It functions by using the 24V DC coil to electromagnetically close the three main poles, allowing power to flow to the motor.

Application & Compatibility

This specific SIRIUS 3RT2 Contactor is typically used in:

• Motor Control: Switching 3-phase AC motors (e.g., pumps, fans, conveyors) up to $4\text{ kW}$.
• Automation Systems: Integration into industrial machinery, control panels, and distribution boards.
• Load Feeder Assembly: A core component for Direct-On-Line (DOL) and Full-Voltage Non-Reversing (FVNR) starters.
• Compatibility: Replaces the previous generation 3RT1023 contactors.

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