Siemens 3TB4422-0XR2 Contactor 32A, 15kW, 440V AC-3, 1 NO + 1 NC, Size 2 Screw Terminal

Overview

The Siemens 3TB4422-0XR2 is a robust and reliable contactor designed for switching motors and other resistive loads in industrial control applications. Built to Siemens’ high standards, this size 2 contactor is engineered for performance and durability. It is rated for AC-3 duty at 400V, handling a current of 32A and a power output of up to 15kW. The contactor features a coil voltage of 440V AC for 50/60 Hz operation, making it suitable for a wide range of global power systems. Its integrated auxiliary contacts (1 normally open (NO) and 1 normally closed (NC)) provide essential feedback and interlocking functionality. The screw connections ensure a secure and straightforward installation process.

Key Benefit

• Reliable Performance: Engineered by Siemens, a global leader in industrial automation, ensuring long-term reliability and performance.
• Versatile Application: Ideal for controlling motors, heaters, and lighting in various industrial settings.
• Enhanced Safety: The integrated auxiliary contacts allow for crucial control circuit functions, such as status indication and interlocking, improving overall system safety.
• Easy Installation: Features screw connections for quick, reliable, and simple wiring, reducing installation time and effort.
• Compact Design: The size 2 frame provides a high switching capacity in a space-efficient package, optimizing panel space.

Function

• Power Switching: The primary function is to safely and efficiently switch high-power circuits for motors and other loads.
• Remote Control: Activated by a low-power signal to its 440V AC coil, allowing for remote control of high-power circuits.
• Control Circuit Integration: The 1 NO and 1 NC auxiliary contacts enable integration into control circuits for functions like interlocking, status signaling, and sequencing.
• Overload Protection Integration: Designed to be paired with a thermal overload relay (sold separately) to protect motors from overcurrent.

Technical Specification

• Product Number: 3TB4422-0XR2
• Manufacturer: Siemens
• Rated Operating Current (AC-3): 32 A at 400 V
• Rated Operational Power (AC-3): 15 kW at 400 V
• Coil Voltage: 440 V AC, 50/60 Hz
• Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed)
• Contactor Size: 2
• Termination Type: Screw connections
• Number of Poles: 3-pole
• Operating Frequency: 50/60 Hz
• Mounting: Standard DIN rail or screw mounting
• Product Type: Contactor for AC applications

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