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Siemens 3RT2446-1AC20 3-Pole Contactor — 140A 690V 24V AC

Siemens 3RT2446-1AC20 3-pole AC-1 Contactor

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ManufacturerSiemens

Part number3RT2446-1AC20

Type Contactor AC-1

Current Rating 140 A (AC-1)

Voltage Rating 690 V

Coil Voltage 24 V AC

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High voltage AC-1 rating 3-pole configuration 24V AC coil 1 NO + 1 NC auxiliary contacts Box terminals for main circuit Screw terminals for control

Product description

The Siemens 3RT2446-1AC20 is a 3-pole contactor designed for AC-1 applications, rated at 140 A and 690 V. It features a 24 V AC coil for 50/60 Hz operation. This S3 size contactor includes 1 NO + 1 NC auxiliary contacts. The main circuit utilizes box terminals for high current capacity, while the control and auxiliary circuits use screw terminals for ease of connection.

This contactor is suitable for robust industrial applications requiring high voltage switching and reliable performance, such as in power distribution units, large machinery control, and automation systems in sectors like energy and heavy industry.

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Technical specifications

Type	Contactor AC-1
Current Rating	140 A (AC-1)
Voltage Rating	690 V
Coil Voltage	24 V AC
Frequency	50/60 Hz
Poles	3
Auxiliary Contacts	1 NO + 1 NC
Size	S3
Terminals	Box (main), Screw (control/aux)

Common applications

Power distribution units

High voltage systems

Industrial machinery

Automation systems

Energy sector

Heavy industry

Compatible systems

Industrial Control Panels Power Distribution Systems High Voltage Equipment

Also known as

Siemens 3RT2446-1AC20 3RT2446-1AC20 Siemens 140A 690V contactor

Replaces / compatible with

This contactor can replace other Siemens 3RT2446 series contactors with a 24V AC coil and similar ratings.

Technical note

Expert tip

The box terminals on the main circuit require appropriate ring or fork terminals for secure and safe connections at 140A.

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Frequently asked questions

What type of terminals does the Siemens 3RT2446-1AC20 use?

The Siemens 3RT2446-1AC20 features box terminals for the main circuit, ensuring high current capacity, and screw terminals for the control and auxiliary circuits for ease of wiring.