Siemens SIRIUS 3RT2024-2BF44 Power Contactor AC-3e/AC-3, 12 A, 5.5 kW Original Brand New

Overview

The Siemens SIRIUS 3RT2024-2BF44 is a high-performance power contactor designed for reliable switching of motors and other electrical loads up to 5.5 kW at 400 V. This 3-pole contactor is a key component in industrial automation and control systems, offering a robust and space-saving solution for a wide range of applications. Featuring a 110 V DC coil and integrated 2 NO + 2 NC auxiliary contacts, it provides both main power control and status feedback.

The innovative spring-loaded terminals ensure fast, secure, and vibration-proof connections, while the removable auxiliary switch allows for flexible configuration and easy maintenance. As part of the SIRIUS modular system, it integrates seamlessly with other Siemens control products, providing a comprehensive and efficient solution.

Key Benefit

• High Performance and Efficiency: Rated for AC-3e/AC-3 operation, this contactor delivers reliable switching for demanding motor applications, reducing energy consumption and extending equipment life.
• Space-Saving Design: The compact S0 size allows for high-density mounting in control cabinets, optimizing valuable panel space.
• Versatile Auxiliary Contacts: The built-in 2 NO + 2 NC auxiliary contacts provide essential feedback for control and monitoring systems, simplifying wiring and reducing the need for external components.
• Fast and Secure Installation: Spring-loaded terminals offer a quick, tool-free connection method, ensuring a permanent, gas-tight contact even under harsh operating conditions and vibrations.
• Easy Maintenance and Configuration: The removable auxiliary switch enables quick and easy replacement or modification of the contactor’s auxiliary functions without disassembling the entire unit.
• Wide Application Range: Suitable for a variety of industrial applications, including motor control, switching of resistive loads, and use in HVAC systems.

Function

• Motor Control: The primary function is to switch and control the power supply to three-phase motors.
• Remote Switching: Allows for remote on/off control of electrical loads using the 110 V DC coil.
• System Feedback: The auxiliary contacts provide real-time status signals (e.g., “contactor on” or “contactor off”) to programmable logic controllers (PLCs) or other control devices.
• Safety and Protection: Used as part of a larger control circuit to ensure safe operation and provide overcurrent protection when combined with an appropriate circuit breaker.

Technical Specification

• Product Number: Siemens 3RT2024-2BF44
• Rated Current (AC-3e/AC-3): 12 A
• Rated Power (AC-3e/AC-3): 5.5 kW at 400 V
• Number of Poles: 3
• Coil Voltage: 110 V DC
• Auxiliary Contacts: 2 NO (Normally Open) + 2 NC (Normally Closed)
• Connection Type: Spring-loaded terminals
• Size: S0
• Feature: Removable auxiliary switch

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