Siemens 3RT2944-5AP61 Contactor Coil, 220V AC / 240V 50/60Hz, Size S3 Original Brand New

Overview

The Siemens 3RT2944-5AP61 is a high-quality replacement or spare magnetic coil designed for the SIRIUS series of 3RT2.4 AC contactors, specifically for the Size S3 frame. This dual-frequency AC solenoid coil is engineered to provide reliable and efficient control for industrial motor applications, ensuring optimal performance and longevity of your Siemens contactor system. It is a crucial spare part for maintenance and repair of the 3RT2.4 series power contactors.

Benefit

• Optimal Performance: Restore your Siemens 3RT2.4 contactor to factory specifications with a genuine Siemens spare part.
• Dual-Frequency Operation: Suitable for both $50\text{ Hz}$ (e.g., European) and $60\text{ Hz}$ (e.g., North American) power grids, offering flexibility and global compatibility.
• Reliability: Engineered for the robust SIRIUS line, ensuring a high operating life and stable switching function.
• Cost-Effective Maintenance: Easily replace a worn or damaged coil without the need to purchase an entire new contactor.
• Size S3 Standard: Perfectly matches the form factor and electrical requirements of the Siemens 3RT2 Size S3 power contactors.

Function

The magnetic coil, or solenoid, is the electromechanical actuator of the contactor. When the specified control voltage ($220\text{ V AC }50\text{ Hz}/240\text{ V AC }60\text{ Hz}$) is applied to the coil, it generates a magnetic field. This field pulls the armature, which in turn closes the main power contacts of the compatible Siemens 3RT2.4 contactor, allowing motor or load power to flow. Removing the control voltage de-energizes the coil, and spring tension opens the main contacts, reliably switching off the load.

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