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Siemens 3TF4122-0BB4 3-Pole AC-3 Contactor - 5.5kW, 24V DC Coil

Siemens 3TF4122-0BB4 Size 0, 3-Pole Contactor, 24V DC Coil

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ManufacturerSiemens

Part number3TF4122-0BB4

Size 0

Poles 3

AC-3 Rating 5.5kW @ 400/380V

Coil Voltage 24V DC

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3-Pole Configuration AC-3 Duty Rating 5.5kW Power Capacity 24V DC Coil Operation Integrated 2 NO + 2 NC Auxiliary Contacts Siemens 3TF4 Series

Product description

The Siemens 3TF4122-0BB4 is a Size 0, 3-pole AC-3 rated power contactor. It is designed to switch loads up to 5.5kW at 400/380V and operates with a 24V DC coil. This model features 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, making it versatile for control and signaling applications.

This contactor is ideal for applications requiring DC coil operation, such as in systems with DC control voltage or where specific solenoid characteristics are needed. It is commonly used in industrial automation, motor control, and building automation systems.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, offers the Siemens 3TF4122-0BB4. We provide reliable access to quality components to support your automation projects.

Technical specifications

Size	0
Poles	3
AC-3 Rating	5.5kW @ 400/380V
Coil Voltage	24V DC
Auxiliary Contacts	2 NO + 2 NC
Series	3TF4

Common applications

Motor Control

Industrial Automation

Building Automation

Control Circuits

Signaling

Interlocking

Compatible systems

Compatible with Siemens overload relays and control systems designed for the 3TF4 series with DC coil requirements.

Also known as

Siemens Contactor 3TF4122-0BB4 3TF41220BB4 Siemens 3TF4122-0B

Replaces / compatible with

This contactor is a direct replacement for Siemens 3TF4122-0BB4 and is suitable for applications requiring 3-pole switching with a 24V DC coil and 2NO/2NC auxiliary contacts.

Technical note

Expert tip

The DC coil operation of this contactor allows for direct integration into DC control systems or use with DC power supplies.

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Frequently asked questions

What is the coil voltage and auxiliary contact configuration for the Siemens 3TF4122-0BB4?

The Siemens 3TF4122-0BB4 features a 24V DC coil and is equipped with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts.