Siemens 3TB4222-0XL0 7.5 kW 16A Contactor, 125/127V AC Coil, 1 NO + 1 NC, Screw Terminal Original Brand New

Overview

The Siemens 3TB4222-0XL0 is a robust and reliable 3-pole contactor designed for controlling and switching electrical loads in industrial applications. This Size 1 contactor is built to meet the demanding requirements of various machinery and systems. With its 125/127V AC coil, it’s suitable for a wide range of control circuits operating at 50 Hz. The contactor is rated for $7.5\text{ kW}$ and $16\text{ A}$ at $400\text{ V}$ (AC-3), making it ideal for motor control and similar applications. It includes integrated auxiliary contacts, one normally open (NO) and one normally closed (NC), which provide additional functionality for signaling and interlocking circuits. The secure screw connection terminals ensure a dependable and straightforward installation.

Key Features

• Model: Siemens 3TB4222-0XL0
• Contactor Type: 3-pole
• Rated Power: $7.5\text{ kW}$ at $400\text{ V}$ (AC-3)
• Rated Current: $16\text{ A}$
• Control Coil Voltage: $125/127\text{ V AC}$ (at $50\text{ Hz}$)
• Auxiliary Contacts: 1 NO + 1 NC
• Connection Type: Screw terminals
• Frame Size: Size 1
• Application: Ideal for switching motors, resistive loads, and other power circuits.
• Standards: Built to Siemens’ high-quality standards for reliability and durability.

Benefit

• Reliable Performance: Engineered by Siemens, a global leader in industrial automation, ensuring consistent and dependable operation.
• Space-Saving Design: The compact Size 1 frame allows for efficient use of space within control cabinets and panels.
• Easy Installation: Screw terminals provide a secure and simple wiring process, reducing installation time and effort.
• Versatile Functionality: The built-in 1 NO and 1 NC auxiliary contacts eliminate the need for external auxiliary blocks in many applications, simplifying design and reducing costs.
• Durability: Constructed with high-quality materials to withstand harsh industrial environments and provide a long service life.

Function

The primary function of the Siemens 3TB4222-0XL0 contactor is to remotely switch high-power circuits. When the $125/127\text{ V AC}$ coil is energized, it creates a magnetic field that closes the main contacts, allowing power to flow to the connected load (e.g., an electric motor). When the coil is de-energized, the contacts open, interrupting the power flow. The integrated auxiliary contacts operate simultaneously with the main contacts and can be used for various control functions, such as:

• Providing feedback to a PLC or control system (status indication).
• Creating interlocking circuits to prevent simultaneous operation of conflicting equipment.
• Controlling indicator lights, horns, or other signaling devices.

Application

• Motor control and starting
• Switching heating elements
• Controlling lighting circuits in large-scale installations
• Automation and control systems
• Pump control
• Fan control
• Compressor control

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