Siemens 3TB4311-0XG1 Contactor, 11kW, 22A, 110V AC, 1NC Auxiliary, Size 1, Screw Connection Original Brand New

Overview

The Siemens 3TB4311-0XG1 contactor is a high-performance electromechanical switching device designed for controlling electric motors and other loads. This particular model is built for AC 60 Hz applications and operates with a control voltage of 110 V AC. It is rated for an AC3 current of 22 A at 400 V, making it suitable for motor switching with a power rating of up to 11 kW. The contactor features one normally closed (1 NC) auxiliary contact for signaling and control circuit integration. It is a size 1 device, which indicates its physical dimensions and power handling capacity within the Siemens product line. The screw connection terminals ensure a secure and reliable electrical connection.

Benefit

• Reliable Performance: Engineered by Siemens, a global leader in industrial automation, this contactor provides dependable and long-lasting performance.
• Safety and Control: The integrated 1 NC auxiliary contact allows for easy integration into safety and control circuits, enabling better monitoring and control of connected equipment.
• Easy Installation: The screw connection terminals simplify the wiring process, ensuring a secure and hassle-free installation.
• Wide Application: Suitable for various industrial applications, including motor control, lighting circuits, and heating systems.

Function

A contactor is essentially a heavy-duty relay used to switch an electrical power circuit on or off. The 3TB4311-0XG1 model functions by using a coil to generate an electromagnetic field when energized by the 110 V AC control voltage. This field pulls the main contacts closed, allowing current to flow to the connected load. When the coil is de-energized, a spring returns the contacts to their open position, interrupting the power flow. The auxiliary contact operates simultaneously with the main contacts, providing a status signal to the control system.

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