Siemens SIRIUS 3RT2327-1BM40 Contactor, 4-Pole, 50A, 220V DC Coil, Size S0 Original Brand New

Overview

The Siemens SIRIUS 3RT2327-1BM40 is a high-performance 4-pole contactor designed for switching non-inductive or weakly-inductive loads (AC-1). As part of the SIRIUS 3RT2 series, this robust and reliable component is engineered to meet international standards such as IEC 60947. Featuring a 220V DC operating mechanism and a compact Size S0 frame, it offers versatile applications in industrial control systems, power distribution, and load management. The contactor is equipped with screw terminals for secure main, auxiliary, and control connections and includes 1 NO + 1 NC integrated auxiliary contacts for enhanced signaling and control functionality.

Features & Benefits

• Robust Performance: Rated for AC-1 applications up to 50 A at 400 V / 40 °C, ensuring reliable switching of resistive loads.
• Versatile Control: Operates with a 220V DC control supply voltage, suitable for a wide range of DC control circuits.
• Compact Design: The Size S0 form factor allows for space-efficient installation in control panels and enclosures.
• Integrated Auxiliary Contacts: Comes with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, providing essential feedback and interlock capabilities without the need for additional modules.
• Secure Connections: Screw terminals on all circuits ensure reliable, long-lasting electrical connections.
• Standards Compliance: Adheres to key international standards (IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1), guaranteeing safety and quality.
• Expandable Functionality: Can be expanded with a range of accessories, including surge suppressors and additional auxiliary switches, to meet specific application requirements.

Functions

The Siemens 3RT2327-1BM40 contactor serves several critical functions:

• Load Switching (AC-1): Primarily used for the four-pole switching of weak or non-inductive loads, such as heating systems, lighting, and capacitor banks.
• Isolation and Disconnection: Can be used to disconnect loads or power generation plants from the electrical grid, providing a reliable means of isolation.
• Transfer Switching: Suitable for transfer switching applications, enabling the controlled changeover between different power sources.
• Control and Signaling: The integrated auxiliary contacts (1 NO + 1 NC) provide feedback to the control system, allowing for status monitoring and the implementation of interlocking logic.

Technical Specifications

• Product Number: 3RT2327-1BM40
• Rated Current (AC-1): 50 A (at 400 V / 40 °C)
• Number of Poles: 4
• Operating Mechanism: DC, 220 V
• Auxiliary Contacts: 1 NO + 1 NC (integrated)
• Terminal Type: Screw terminals
• Size: S0
• Standards: IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1
• Compatibility: SIRIUS 3RT2 series accessories, 3RU2/3RB3 overload relays

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