Siemens 3TB4311-0XG2 Contactor 110V AC, 22A, 11kW, 1 NC Contact, Size 1 Original Brand New

Overview

The Siemens 3TB4311-0XG2 is a robust and reliable contactor designed for controlling electric motors and other electrical loads in various industrial applications. This specific model operates on a 110V AC control voltage and is rated for AC-3 operation at 400V, handling up to 22A and a maximum motor power of 11 kW. It features one normally closed (1 NC) auxiliary contact, providing a clear indication of its operational status. Its compact Size 1 design and secure screw connections make installation straightforward. This contactor is engineered for use in circuits with a frequency of 50/60 Hz, ensuring compatibility with a wide range of power systems.

Benefit

• High Performance: With a 22A rating at 400V, it can reliably switch significant loads, making it suitable for demanding applications.
• Safety and Reliability: The included NC auxiliary contact provides essential feedback for safety circuits and control systems, enhancing operational security.
• Versatile Application: Designed for both 50 Hz and 60 Hz systems, it’s a versatile component for global use.
• Easy Installation: The clear screw connections and compact size simplify the mounting and wiring process, saving time during setup.

Function

A contactor is an electrically controlled switch used for switching an electrical power circuit. The Siemens 3TB4311-0XG2 functions by using an electromagnet to close or open a set of contacts. When the 110V AC control voltage is applied to the coil, it generates a magnetic field that pulls the main contacts together, allowing power to flow to the connected load. The 1 NC auxiliary contact opens when the main contacts close, providing a signal that the contactor is energized and the circuit is active. This functionality is crucial for motor starters, lighting control, and heating systems.

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