Siemens SIRIUS 3RT2024-2BB40 Power Contactor, 12A, 5.5kW, 24V DC Coil, Size S0, Spring-Type Terminal Original Brand New

Overview: Siemens SIRIUS 3RT2024-2BB40 Power Contactor

The Siemens 3RT2024-2BB40 is a high-performance, 3-pole SIRIUS 3RT2 power contactor designed for switching motors and other electrical loads. As part of the modular SIRIUS system, this contactor offers a compact, reliable, and modern solution for your control and automation needs. It is engineered to handle an operating current of 12 A (AC-3e/AC-3) and motor power of 5.5 kW at 400 V. The robust design and integrated auxiliary contacts make it a dependable component in industrial control panels.

Benefit

• Fast and Reliable Wiring: The innovative spring-loaded terminal (spring-type terminal) system ensures fast, maintenance-free, and highly vibration-proof connections, significantly reducing wiring time compared to screw terminals.
• Space-Saving Design: The compact Size S0 design minimizes footprint in control cabinets, allowing for high-density component placement.
• High Performance: With a high mechanical service life (typically 10,000,000 operating cycles), the 3RT2 contactor offers long-term reliability for demanding industrial applications.
• Integrated Functions: Comes standard with $1\text{ NO }+1\text{ NC}$ integrated auxiliary contacts, simplifying your control circuit design.
• Energy Efficiency: Optimized for switching IE3 and IE4 motors, ensuring your system remains up-to-date with modern energy standards.
• Global Standard Compliance: Approved for worldwide use (e.g., IEC and UL/CSA), making it suitable for international machine building and export.

Function

The 3RT2024-2BB40 Power Contactor functions as an electromagnetically operated switch. When the 24V DC control voltage is applied to the coil, it creates a magnetic field that closes the three main contacts (3-pole) to connect the $400\text{ V}$ power supply to the motor. Simultaneously, the integrated auxiliary contacts change state (the NO contact closes and the NC contact opens), providing feedback and interlocking signals for the control system. It is a vital component in motor starter combinations, ensuring safe and controlled starting, stopping, and protection of industrial motors up to $5.5\text{ kW}$.

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