3RA2942-1AA00

The Siemens 3RA2942-1AA00 is an S3-size standard rail and bus adapter from the SIRIUS 3RA29 series. It is used to adapt and fix contactor or starter assemblies of the S3 frame to a standard 35mm rail or bus system, enhancing installation stability and compatibility. It is a commonly used mechanical installation accessory in control panel assembly.

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Siemens 3RA2942-1AA00 SIRIUS S3 busbar adapter

Product Positioning

3RA2942-1AA00 is a standard rail and busbar adapter specifically designed for S3 sizes. Its purpose is to assist in the secure mounting of S3 frame contactor or starter assemblies onto standard 35mm rails or busbar systems. This type of adapter is a mechanical mounting accessory, not a wiring or interlocking device; its primary function is to address compatibility issues between different mounting interfaces.

Core Product Advantages and Features

S3 size dedicated design

Corresponding SIRIUS S3 frame contactor and starter assembly

Supports standard guide rails

Can be installed on standard 35mm DIN rail systems

Bus compatibility

It can also be installed with a busbar to enhance the design flexibility of the distribution panel.

Pure mechanical installation accessories

It does not include wiring or interlocking functions, and is solely responsible for structural fixation.

Improve panel compatibility

Addressing differences in size and mounting methods between different installation interfaces

project	Specification
Product Type	Standard guide rail and busbar adapter
Applicable size	S3
Applicable series	SIRIUS 3RA29 series

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