Siemens 3TB4122-0XC1 Contactor AC-3, 12A, 5.5kW, 24V AC Coil, 1NO+1NC Aux, Size 0, Screw Connection Original Brand New

Overview

The Siemens 3TB4122-0XC1 is a high-performance AC contactor designed for reliable switching of electrical loads in industrial and and commercial applications. As part of the trusted Siemens 3TB41 series, this contactor is built for durability and efficiency. Its compact Size 0 form factor and convenient screw connection terminals make it an ideal choice for a wide range of control panels and machinery. With a 12A rating at 400V (AC-3) and a 5.5kW power rating, it’s perfectly suited for controlling motors, heaters, and other inductive loads. The integrated 24V AC coil and one normally open (1NO) and one normally closed (1NC) auxiliary contacts provide excellent flexibility and control for your systems.

Key Benefit

• Reliable Performance: Engineered by Siemens, a leader in industrial automation, ensuring long-term reliability and consistent operation.
• Versatile Application: Ideal for a wide range of applications including motor control, lighting systems, heating circuits, and power distribution.
• Space-Saving Design: The compact Size 0 frame saves valuable space within your control cabinet.
• Easy Installation: Features robust screw terminals for secure and straightforward wiring.
• Enhanced Control: Comes with a built-in 1NO + 1NC auxiliary contact block, allowing for simple integration into control and signaling circuits.
• Optimal Compatibility: Designed to operate on a 24V AC, 60 Hz power supply, ensuring compatibility with standard industrial control systems.

Technical Specification

• Product Number: 3TB4122-0XC1
• Type: Contactor
• Series: Siemens 3TB41
• Application: AC Motor Control, Resistive Loads
• Rated Operational Voltage (Ue): 400V AC
• Rated Operational Current (Ie) – AC-3: 12 A (at 400V)
• Rated Power (P) – AC-3: 5.5 kW (at 400V)
• Control Supply Voltage (Uc): 24V AC, 60 Hz
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
• Size: Size 0
• Connection Type: Screw Connection
• Compliance: IEC/EN 60947

Functions: The Siemens 3TB4122-0XC1 Contactor serves as an electrically controlled switch used for switching a power circuit. When the 24V AC coil is energized, a magnetic field is created, which pulls a plunger to close the main contacts. This action allows power to flow to the connected load. Simultaneously, the auxiliary contacts change state—the NO contact closes and the NC contact opens—to provide feedback or control signals to other parts of the system, such as PLCs or indicator lights. De-energizing the coil causes the contacts to open, interrupting the power flow to the load.

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