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Siemens 3TF3400-0BB4 3-Pole AC-3 Power Contactor - 15kW

Siemens 3TF3400-0BB4 Size 2, 3-Pole Power Contactor

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ManufacturerSiemens

Part number3TF3400-0BB4

Size 2

Poles 3

AC-3 Rating 15kW @ 400/380V

Coil Voltage 24V DC

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3-Pole Configuration AC-3 Duty Rating 15kW Power Capacity 24V DC Coil Voltage Pluggable Auxiliary Contact Blocks (Sold Separately) Robust Siemens 3TF Series Construction

Product description

The Siemens 3TF3400-0BB4 is a robust Size 2, 3-pole power contactor designed for AC-3 applications. It is rated for 15kW at 400/380V and operates with a 24V DC coil. This contactor is part of the reliable 3TF series, known for its durability and performance in demanding industrial environments.

Ideal for motor control, this contactor is suitable for switching and controlling squirrel cage and slip-ring motors, as well as other AC loads like solenoids, capacitors, and heating elements. It finds applications in motor control centers, industrial machinery, pumps, compressors, and HVAC systems.

Source your Siemens 3TF3400-0BB4 from Stanlo Automation, a veteran-owned business committed to providing high-quality surplus industrial parts. We ensure reliable sourcing and competitive pricing for your automation needs.

Technical specifications

Size	2
Poles	3
AC-3 Rating	15kW @ 400/380V
Coil Voltage	24V DC
Auxiliary Switches	None Included
Series	3TF
Mounting	DIN Rail or Screw Mount

Common applications

Motor Control

Industrial Machinery

Pump Control

HVAC Systems

Compressor Control

Lighting Loads

Solenoid Control

Compatible systems

Suitable for use with Siemens overload relays and motor starter systems.

Also known as

Siemens Contactor 3TF3400-0BB4 3TF34000BB4

Replaces / compatible with

This contactor is a direct replacement for Siemens 3TF3400-0BB4 units and can be used in systems requiring similar specifications. It is part of the widely used Siemens 3TF series.

Technical note

Expert tip

Ensure proper ventilation around the contactor to prevent overheating, especially in high-duty cycle applications.

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Frequently asked questions

What is the AC-3 rating and coil voltage for the Siemens 3TF3400-0BB4?

The Siemens 3TF3400-0BB4 is rated for AC-3 duty with a power capacity of 15kW at 400/380V. It features a 24V DC coil for operation.