Siemens 3RT2023-1BW40 SIRIUS Power Contactor, 9A, 4kW, 48V DC, S0 Original Brand New

Overview

The Siemens SIRIUS 3RT2023-1BW40 is a high-performance, 3-pole power contactor designed for switching motors up to $4\text{ kW}$ at $400\text{ V}$. Part of the compact and reliable SIRIUS 3RT2 series, this contactor is built for demanding industrial control and motor feeder applications. It features a $48\text{ V DC}$ coil, a fixed $1\text{ NO}+1\text{ NC}$ auxiliary contact configuration, and robust screw terminals for secure wiring. Its size $\text{S}0$ form factor allows for efficient use of panel space.

Key Technical Specification

• Product Number: 3RT2023-1BW40
• Manufacturer: Siemens
• Series: SIRIUS 3RT2
• Type: Power Contactor (Motor Contactor)
• Poles: 3-pole
• Operational Current ($\text{AC-3e}/\text{AC-3}$): $9\text{ A}$
• Operational Power ($\text{AC-3}$): $4\text{ kW}/400\text{ V}$
• Coil Voltage ($\text{Control Voltage}$): $48\text{ V DC}$
• Auxiliary Contacts: $1\text{ NO}+1\text{ NC}$ (Integrated)
• Terminal Type: Screw Terminal
• Size: $\text{S}0$

Features & Benefit

• High Reliability: Part of the globally approved Siemens SIRIUS 3RT line, ensuring high contact reliability and long mechanical service life.
• Space-Saving Design: The compact $\text{S}0$ size minimizes space requirements in control cabinets.
• DC Coil Efficiency: Utilizes a $48\text{ V DC}$ coil with low control power consumption, ideal for applications requiring DC control circuits.
• Integrated Auxiliary Contacts: The built-in $1\text{ NO}+1\text{ NC}$ auxiliary contacts simplify wiring and provide immediate feedback for interlocking and control logic.
• Easy Integration: Designed for optimal combination with other SIRIUS components, such as overload relays and circuit breakers, to build complete, coordinated motor feeders.
• Robust Connection: Secure and field-proven screw terminals ensure reliable, vibration-proof electrical connections.

Function

The Siemens 3RT2023-1BW40 is an electromechanical switching device primarily used for switching $\text{AC}$ motors, resistive loads, and other electrical consumers. When the $48\text{ V DC}$ coil is energized, the three main power poles close, allowing current to flow to the load, such as a three-phase motor. The integrated auxiliary contacts switch simultaneously to provide status indication or control other parts of the circuit.

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