Siemens 3RT2024-1FB40 Power Contactor, 12A, 5.5kW, 24V DC, S0 Original Brand New

Overview: Siemens SIRIUS 3RT2024-1FB40 Power Contactor

The Siemens SIRIUS 3RT2024-1FB40 is a high-performance, 3-pole power contactor from the robust SIRIUS 3RT2 series, engineered for efficiently switching motors and other loads up to 5.5 kW at 400 V (AC-3e/AC-3). This compact Size S0 contactor features a reliable 24 V DC control coil with a pre-installed plugged-in diode combination to suppress coil voltage peaks, enhancing system reliability. Its screw terminals ensure secure and straightforward wiring in industrial control panels. Equipped with 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contacts, it provides essential feedback and interlock functionality for complex automation tasks.

Key Benefit

• Reliable Motor Switching: Rated for 12 A (AC-3e/AC-3) for safe and dependable switching of motors and heavy loads.
• Integrated Protection: The plugged-in diode combination protects the control circuit against harmful voltage spikes, prolonging the life of the control electronics.
• Space-Saving Design: The compact Size S0 form factor minimizes panel space requirements.
• Easy Integration: Standardized auxiliary contacts (1 NO + 1 NC) and the SIRIUS modular system ensure seamless integration with other Siemens components like overload relays and circuit breakers.
• Durable & Climate-Resistant: Built for demanding industrial environments, ensuring a long mechanical service life.

Function

The 3RT2024-1FB40 contactor serves as the primary switching element in motor starters and control circuits, performing the following key functions:

1. Power Switching: Connects and disconnects the main power circuit to a 3-phase motor or load.
2. Remote Control: Allows the main circuit to be controlled from a distance using the 24 V DC control voltage.
3. Control Circuit Feedback: The integrated auxiliary contacts (1 NO + 1 NC) provide operational status feedback for safety interlocks and indicator lights in the automation system.

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