Siemens SIRIUS 3RT2023-1BD40 Power Contactor, Size S0, 9A (AC-3), 4kW, 42V DC Coil, 3-Pole Original Brand New

Overview

The Siemens SIRIUS 3RT2023-1BD40 Power Contactor is a high-performance, compact switching device engineered for reliable motor control and load switching in industrial environments. Part of the globally recognized SIRIUS modular system, this 3-pole AC-3 contactor is rated for 9 A (4 kW at 400 V) and features a low-power 42 V DC coil for efficient operation. Its integrated 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts provide essential feedback and interlocking capabilities, making it a versatile and indispensable component for any control panel or motor starter assembly.

Key Features & Specifications

• Product Number: 3RT2023-1BD40
• Series: SIRIUS 3RT2
• Type: Power Contactor for Motor Switching
• Pole Configuration: 3-Pole (3 Main Contacts)
• Operating Current (AC-3e/AC-3): 9 A at 400 V
• Operating Power (AC-3e/AC-3): 4 kW at 400 V
• Coil Voltage: 42 V DC (Direct Current)
• Auxiliary Contacts: 1 NO + 1 NC (Base Integrated)
• Termination: Reliable Screw Terminal connection
• Size: S0 (Compact and Standardized)
• Standard Compliance: IEC/EN 60947, VDE, UL, CSA, CE (Globally Approved)
• Mounting: 35 mm DIN Rail or Screw Mounting

Benefit

• Reliable Motor Protection: Designed for switching 3-phase AC motors up to 4 kW, ensuring long-term operational stability and safety.
• Energy Efficiency: The 42V DC coil minimizes energy consumption in the control circuit compared to standard AC coils.
• Simplified Wiring: Integrated auxiliary contacts and robust screw terminals ensure quick, reliable, and secure wiring.
• Space-Saving Design: The compact Size S0 footprint allows for high-density installation in smaller control cabinets.
• Global Application: Complies with international standards (IEC, UL, CSA), making it suitable for machinery and systems worldwide.
• Modular System: Fully compatible with the SIRIUS modular system accessories, including thermal overload relays (like the 3RB30/3RB31 series) and front/side auxiliary switch blocks for enhanced functionality.

Application

The Siemens 3RT2023-1BD40 contactor is ideal for a wide range of industrial applications, including:

• Starting and stopping standard asynchronous 3-phase motors.
• Switching resistive loads (heating, lighting).
• Integration into automated control systems (PLCs, control relays).
• Use in pumps, fans, conveyors, and machine tools.

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