3RA1943-2B

3RA1943-2B is an S3 size star-delta starter assembly kit, used to assemble three contactors into a star-delta reduced voltage starter circuit, suitable for use in reduced voltage starter control panels for medium and large motors.

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Product Positioning

3RA1943-2B is an assembly kit for Siemens SIRIUS S3 size star-delta starter combinations, used to form a reduced-voltage starting circuit by connecting the main, star, and delta contactors.

Core Product Advantages and Features

Star-delta combination special

Design of a Y-Δ step-down starting architecture consisting of three contactors.

For S3 medium-sized applications

The contactor assembly dimensions are suitable for reducing voltage starting of medium and large motors.

Simplify assembly process

The parts required for assembly are provided in kit form, reducing on-site material preparation time.

Improve institutional stability

Ensure that the relative positions and spacing of the three contactors are consistent after assembly.

project	Specification
Product Model	3RA1943-2B
Product Type	Star-delta (Y-Δ) starter assembly kit
Applicable size	SIRIUS S3
Applicable connection method	Star-delta (Y-Δ) reduced voltage starting
Applicable contactor quantity	3 (Main/Star/Corner)
Applicable series	SIRIUS Modular Control System
Product Line	Low-voltage switchgear accessories
Product Status	Some channels are listed as discontinued/clearance sales.

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