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Siemens 3RT1446-1BB40 AC-1 Contactor - 140A, 24V DC Coil

Siemens 3RT1446-1BB40 3-pole AC-1 power contactor.

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ManufacturerSiemens

Part number3RT1446-1BB40

Type AC-1 Contactor

Current 140A

Voltage 400V

Coil Voltage 24V DC

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AC-1 rated 140A operational current 3-pole configuration Size S3 Screw terminals 24V DC coil

Product description

The Siemens 3RT1446-1BB40 is a 3-pole AC-1 power contactor designed for loads up to 140A at 400V. It features a 24V DC coil and screw terminals, belonging to the SIRIUS 3RT1 series in Size S3. This product is phased out, with the SIRIUS 3RT2 series being its successor.

This contactor is suitable for switching non-inductive loads in various industrial applications, including motor control, power distribution, and control systems. The DC coil offers specific advantages in certain control circuits.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, stocks obsolete and hard-to-find components like the Siemens 3RT1446-1BB40. We provide reliable sourcing for your automation needs.

Technical specifications

Type	AC-1 Contactor
Current	140A
Voltage	400V
Coil Voltage	24V DC
Poles	3
Size	S3
Terminals	Screw

Common applications

Industrial automation

Control panels

Load switching

Power distribution

DC coil applications

Manufacturing

Compatible systems

SIRIUS 3RT1 accessories Industrial control systems

Also known as

SIRIUS 3RT1446-1BB40 Siemens 3-pole DC coil contactor 140 Amp AC-1 Contactor

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens 3RT2446-1NB30.

Technical note

Expert tip

The 24V DC coil requires a stable DC power source and is suitable for applications where DC control voltage is preferred.

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Frequently asked questions

What is the coil type for the Siemens 3RT1446-1BB40 contactor?

The Siemens 3RT1446-1BB40 contactor features a 24V DC coil. This allows for direct integration into DC control circuits for reliable switching of AC-1 loads.