Siemens 3RT2924-5AD21 Contactor Coil 42V AC for 3RT202 Original Brand New

Overview

The Siemens 3RT2924-5AD21 is an essential replacement magnetic coil for the SIRIUS 3RT2 series of power contactors, specifically designed for use with the Size S0 contactor models: 3RT2023, 3RT2024, and 3RT2025. This genuine Siemens component ensures the reliable operation of your industrial control applications by providing the necessary electromagnetic force to actuate the contactor. It is rated for a control supply voltage of 42 V AC at both 50 Hz and 60 Hz, making it suitable for global standard power supplies where this voltage is utilized for control circuits.

Key Technical Specification

• Product Type: Magnetic Coil / Solenoid Coil
• Control Voltage: 42 V AC
• Frequency: 50/60 Hz
• Compatibility: Designed for Siemens SIRIUS Power Contactors 3RT2023-.*A, 3RT2024-.*A, and 3RT2025-.*A (Size S0).
• Brand: Siemens SIRIUS
• Function: Activates the main contacts of the power contactor, allowing it to switch power loads, typically motors up to 18.5 kW (Size S0 rating).
• Power Loss (Typical): Approx. 7.9 VA (Apparent holding power is approximately 7.6 VA at 50 Hz).
• Operating Range Factor: $0.8$ to $1.1$ at $50\text{ Hz}$ (ensures reliable operation across a voltage fluctuation range).

Benefit

• Guaranteed Compatibility: As an original Siemens part, the 3RT2924-5AD21 coil is perfectly matched for the 3RT202 contactors, ensuring proper fit, function, and performance.
• Reliable Performance: Maintains the high switching reliability and endurance characteristic of the SIRIUS 3RT2 series.
• Standardized Control: Operates on the industry-standard $42\text{ V AC}$ control voltage, simplifying integration into existing electrical panels and machinery.
• Reduced Downtime: Quick and easy replacement of the coil minimizes maintenance time and keeps your motor control systems running efficiently.

Application

This replacement magnetic coil is essential for maintenance and repair of Siemens 3RT202 contactors used in motor control centers, automation systems, HVAC control, and general industrial applications requiring the switching of electrical loads (e.g., motors, heaters, lighting).

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