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Siemens 3TF4844-0AL2 Size 4 Contactor

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ManufacturerSiemens

Part number3TF4844-0AL2

Manufacturer Siemens

Part Number 3TF4844-0AL2

Type Contactor

Size 4

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CAGE: 9NK75

Size 4 industrial contactor 3-pole AC-3 duty 37kW motor capacity 4NO+4NC auxiliary contacts 230V AC dual frequency coil High capacity

Product description

The Siemens 3TF4844-0AL2 is a substantial Size 4, 3-pole AC-3 contactor, rated for 37kW at 400/380V. This particular model stands out with its extensive auxiliary contact configuration of 44 (4 normally open and 4 normally closed) contacts, ideal for complex control and signaling requirements.

This heavy-duty contactor is engineered for demanding industrial applications, including motor control, power switching, and automation systems in manufacturing, processing, and heavy equipment sectors. Its robust build ensures reliability and longevity.

Stanlo Automation, a veteran-owned provider of surplus industrial automation parts, stocks the Siemens 3TF4844-0AL2. We are committed to delivering quality products and excellent customer service.

Technical specifications

Manufacturer	Siemens
Part Number	3TF4844-0AL2
Type	Contactor
Size	4
Poles	3
AC-3 Rating	37kW
Voltage	400/380V
Auxiliary Contacts	44 (4NO+4NC)
Coil Voltage	230V 50/60Hz AC

Common applications

Motor starting

Industrial automation

Power distribution

Heavy machinery

Control panels

Manufacturing equipment

Compatible systems

PLC integration Motor control centers Automation switchgear

Also known as

Siemens 3TF4844-0AL2 Contactor 3TF48440AL2 Siemens 4 pole auxiliary contactor

Replaces / compatible with

This contactor is suitable for applications requiring a Size 4, 37kW, 3-pole contactor with a 230V AC coil and extensive auxiliary contacts. It is part of the Siemens 3TF series. Verify specifications for exact fit.

Technical note

Expert tip

The 4NO/4NC auxiliary contacts provide excellent flexibility for interlocking schemes and status feedback in complex automation systems.

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Frequently asked questions

What is the auxiliary contact configuration for the Siemens 3TF4844-0AL2 contactor?

The Siemens 3TF4844-0AL2 contactor is equipped with 4 normally open (NO) and 4 normally closed (NC) auxiliary contacts, totaling 8 auxiliary contacts for advanced control signaling.