Siemens 3TB4122-0XM1 Contactor 12A, 5.5kW, AC-3, 208V AC Coil, 1 NO + 1 NC Aux Contact, Screw Terminal Original Brand New

Overview

The Siemens 3TB4122-0XM1 is a high-performance AC contactor designed for reliable switching of electrical loads. Engineered for industrial applications, this Size 0 contactor is built to meet demanding operational requirements. It features a 208V AC operating coil and is rated for a maximum current of 12A at 400V AC in AC-3 utilization category, making it ideal for controlling motors and other inductive loads up to 5.5 kW. The inclusion of one normally open (1 NO) and one normally closed (1 NC) auxiliary contact provides enhanced flexibility for control circuits and signaling. The robust screw connection terminals ensure a secure and durable electrical connection, simplifying installation and maintenance.

Key Features

• Contactor Type: 3TB41 series, AC operated
• Operating Coil Voltage: 208V AC, 60 Hz
• Rated Operational Current (AC-3): 12 A at 400 V
• Rated Operational Power (AC-3): 5.5 kW
• Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed)
• Size: Size 0
• Connection Type: Screw terminals for reliable and secure wiring
• Durability: High mechanical and electrical service life
• Application: Suitable for switching motors, resistive loads, and other industrial equipment
• Brand: Siemens – A global leader in industrial automation and control products.

Benefit

• Reliable Performance: Siemens engineering ensures consistent and long-lasting operation in various industrial environments.
• Enhanced Control: The integrated auxiliary contacts allow for easy integration into complex control systems, including interlocks and status indicators.
• Easy Installation: The screw connection design facilitates quick and secure wiring, reducing installation time and effort.
• Compact Design: The Size 0 form factor saves valuable panel space, making it suitable for compact installations.
• Versatility: Ideal for a wide range of motor control and power switching applications in manufacturing, HVAC, and more.

Function

The Siemens 3TB4122-0XM1 contactor’s primary function is to remotely and automatically switch a circuit on or off. When the 208V AC coil is energized, it generates a magnetic field that pulls the main contacts into a closed position, allowing current to flow to the connected load. Simultaneously, the auxiliary contacts change their state (NO closes, NC opens), providing signals for control logic, interlocking, or status indication. When the coil is de-energized, a spring mechanism returns all contacts to their original position, safely interrupting the circuit.

Application

• Motor control for pumps, fans, and conveyors
• Switching of heating elements and lighting circuits
• Integration into automated control panels and machinery
• Start/stop control for industrial equipment

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