Siemens 3TB4211-0XB0 Contactor 24V AC, 16A, 7.5kW, 1 NC Auxiliary Contact, Size 1 Original Brand New

Overview

The Siemens 3TB4211-0XB0 is a high-performance AC contactor designed for reliable switching and control of electrical loads in industrial applications. Part of the robust Siemens 3TB series, this contactor is engineered for durability and efficiency, making it an excellent choice for motor control, resistive loads, and general-purpose switching. With its compact Size 1 design, it saves valuable panel space while providing powerful performance.

Key Features & Specification

• Product Number: 3TB4211-0XB0
• Contactor Type: AC Contactor
• Coil Voltage: 24V AC (50 Hz)
• Rated Operational Current (Ie​): 16 A (at 400V, AC-3)
• Rated Power (kW): 7.5 kW (at 400V, AC-3)
• Auxiliary Contacts: 1 Normally Closed (NC)
• Size: Size 1
• Connection Type: Screw terminals for secure and reliable wiring
• Application: Ideal for controlling electric motors, lighting systems, heating circuits, and more.

Benefit

• Reliable Performance: Built with high-quality materials and Siemens’ renowned engineering, this contactor ensures long-term operational reliability and safety.
• Space-Saving Design: The compact Size 1 form factor allows for higher density installations in control panels and electrical cabinets.
• Easy Installation: Features clearly marked screw terminals for straightforward and secure wiring, reducing installation time.
• Versatile Application: Suitable for a wide range of industrial applications, including motor control and general-purpose switching of AC loads.
• Safety & Durability: Designed to meet international standards, providing a safe and durable solution for your electrical control needs.

Function

The Siemens 3TB4211-0XB0 contactor functions as an electrically controlled switch used to turn on or off an electrical power circuit. When the 24V AC coil is energized, it generates a magnetic field that pulls in the armature, closing the main power contacts and allowing current to flow to the load (e.g., an electric motor). The built-in 1 NC auxiliary contact can be used for interlocking, signaling, or control circuit feedback. When the coil is de-energized, the contacts open, interrupting the power supply.

Application

• Motor control circuits (e.g., controlling 3-phase motors up to 7.5 kW)
• Heating, Ventilation, and Air Conditioning (HVAC) systems
• Pumping and compressor systems
• Conveyor systems and machinery
• Lighting control and power distribution

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