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Siemens 3TF3400-0AK6 Size 3 AC Contactor

Siemens 3TF3400-0AK6 Size 3, 3-pole AC-3 Contactor

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ManufacturerSiemens

Part number3TF3400-0AK6

Poles 3

Coil Voltage 120V AC 60Hz / 110V AC 50Hz

Power 15kW at 400/380V

Duty AC-3

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Veteran-owned

CAGE: 9NK75

3-Pole Design AC-3 Duty Rated Ready for Plug-in Auxiliaries Size 3 Footprint High Power Switching

Product description

The Siemens 3TF3400-0AK6 is a Size 3, 3-pole power contactor designed for AC-3 applications, rated at 15kW for 400/380V circuits. This specific variant is equipped with an AC coil operating at 120V/60Hz or 110V/50Hz. It does not include auxiliary contacts but is designed to accept plug-on auxiliary contact blocks.

This contactor is engineered for demanding industrial applications requiring robust switching capabilities for high-power motors and loads. It is commonly used in heavy manufacturing, processing plants, and large machine automation.

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Technical specifications

Poles	3
Coil Voltage	120V AC 60Hz / 110V AC 50Hz
Power	15kW at 400/380V
Duty	AC-3
Size	3
Auxiliary Contacts	None (pluggable)

Common applications

Heavy Motor Control

Industrial Power Switching

Automation Systems

Manufacturing Machinery

Processing Plants

Compatible systems

Siemens industrial control systems High-power motor applications Heavy-duty automation

Also known as

Siemens 3TF3400AK6 3TF3400-0AK6 Contactor Siemens AC Coil Contactor Size 3

Replaces / compatible with

This contactor is a direct replacement for other Siemens 3TF3400-0AK6 units and is compatible with Siemens 3TF series accessories. Suitable for systems requiring a Size 3, 15kW AC-3 contactor with AC coil.

Technical note

Expert tip

The '-K6' suffix typically indicates the AC coil voltage (120V/110V) and absence of standard auxiliary contacts on this Size 3 contactor.

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Frequently asked questions

What is the coil voltage and AC-3 power rating for the Siemens 3TF3400-0AK6?

The Siemens 3TF3400-0AK6 features an AC coil (120V/60Hz or 110V/50Hz) and is rated for 15kW at 400/380V under AC-3 duty.