Siemens 3TB3901-0XN2 Contactor 2.2 kW, 220V AC Coil, 1 NC Auxiliary Contact Original Brand New

Overview

The Siemens 3TB3901-0XN2 is a high-performance AC contactor designed for reliable switching of electrical loads. It operates on a 220 V AC coil and is rated for a 2.2 kW motor at 400 V AC3, handling a current of up to 6 A. This contactor is a size 0 and features a single normally closed (NC) auxiliary contact, making it suitable for various control and signaling applications. The screw connection terminals ensure a secure and straightforward installation.

Key Benefit

• Reliable Performance: Engineered by Siemens, a leader in industrial automation, this contactor offers durability and long-term reliability in demanding environments.
• Space-Efficient Design: Its compact size 0 makes it ideal for installations with limited panel space, without compromising on power handling capabilities.
• Versatile Application: Suitable for a wide range of applications, including motor control, lighting circuits, and heating systems.
• Easy Installation: The screw connection terminals simplify wiring, reducing installation time and effort.
• Integrated Auxiliary Contact: The included 1 NC auxiliary contact allows for direct integration into control circuits for status indication or interlocking.

Technical Specification

• Product Number: 3TB3901-0XN2
• Operating Voltage (Coil): 220 V AC, 50/60 Hz
• Rated Power: 2.2 kW at 400 V AC3
• Rated Current: 6 A
• Auxiliary Contacts: 1 Normally Closed (NC)
• Frame Size: Size 0
• Connection Type: Screw connection

Function

This contactor’s primary function is to act as an electrically operated switch for a power circuit. The 220 V AC coil, when energized, closes the main contacts, allowing power to flow to the connected load. The 1 NC auxiliary contact operates simultaneously with the main contacts; it opens when the main contacts close and closes when the main contacts open. This action is crucial for safety interlocks, signaling the operational status, and control logic in automated systems.

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