Siemens 3TB4101-0XB0 Contactor, 24V AC, 12A, 5.5 kW, 1 NC Aux, Size S0 Original Brand New

Overview

The Siemens 3TB4101-0XB0 is a compact and reliable 3-pole AC contactor designed for controlling electric motors and other resistive loads. It’s engineered for use in applications where space is a premium and dependable switching is essential. This model features a 24V AC coil for activation, is rated for up to 12A at 400V, and can handle motors up to 5.5 kW (AC-3 duty). A key feature is the integrated normally closed (1 NC) auxiliary contact, which provides a convenient way to integrate the contactor into control circuits for feedback or interlocking purposes. The contactor is a size S0 model and uses secure screw connections for easy and reliable wiring.

Key Benefit

• Reliable Performance: Built to Siemens’ high standards, this contactor provides long-lasting and consistent performance in demanding industrial environments.
• Space-Saving Design: The compact size S0 footprint allows for efficient use of panel space.
• Integrated Auxiliary Contact: The built-in 1 NC auxiliary contact simplifies wiring and reduces the need for additional components.
• Easy Installation: Standard screw connections ensure quick and secure wiring.
• Versatile Application: Suitable for a wide range of motor control and power switching applications.

Technical Specification

• Product Number: 3TB4101-0XB0
• Operating Voltage: 24V AC, 50 Hz
• Main Contacts: 3-pole
• Rated Operational Current (AC-3): 12 A at 400 V
• Rated Power (AC-3): 5.5 kW at 400 V
• Auxiliary Contacts: 1 Normally Closed (NC)
• Size: S0
• Connection Type: Screw Terminals
• Standards: IEC, EN

Function

The Siemens 3TB4101-0XB0 contactor functions as an electrically controlled switch. When the 24V AC coil is energized, it generates a magnetic field that pulls the main contacts together, allowing power to flow to the connected load. Simultaneously, the normally closed (NC) auxiliary contact opens. When the coil is de-energized, springs return the contacts to their original position, breaking the circuit and closing the auxiliary contact. This fundamental on/off switching mechanism is crucial for the safe and automated control of machinery.

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