3RA2911-0
The 3RA2911-0 is a star-delta coupling module with built-in connecting cables. It is suitable for SIRIUS 3RT2 series contactors and is used to assist in the formation of star-delta (Y-Δ) reduced-voltage starting circuits. It belongs to a different functional category of accessories than general circuit breaker contactor connection modules.
Product Positioning
The 3RA2911-0 is a coupling module in the Siemens SIRIUS series specifically designed for Wye-Delta starting circuits. It includes a connecting cable and is used with the 3RT2 contactor. Its function is different from other circuit breaker contactor connection modules with the same part number.
Core Product Advantages and Features
Built-in connecting cable
The module comes with a connecting cable, reducing the need for additional wiring and terminal crimping work on site.
Star-delta starter
The design aims to assist in the formation of a Y-Δ step-down starting circuit, thereby reducing the surge in motor starting current.
Paired with 3RT2 contactor
It can be combined with SIRIUS 3RT2 series contactors to form a standard star-delta starter group.
Functionality independent of the connectivity module
The connection modules for circuit breakers such as 3RA2911-2AA00 are for different purposes and should not be used interchangeably.
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