3RA1972-2E
The Siemens SIRIUS 3RA1972-2E is a mounting base for star-delta (YD) starters. It is designed for combinations of three contactors of mixed sizes (S12, S12, and S10). The main contactor and delta contactor are S12 size, while the star contactor is the smaller S10 size. It is suitable for applications with high motor power but low star circuit current.
Product Positioning
The 3RA1972-2E is a mounting base plate used in Siemens SIRIUS series star-delta starters. It is designed for a mixed combination of S12 size main contactor and delta contactor and S10 size star contactor, suitable for motor starting requirements with specific power ratios.
Core Product Advantages and Features
Design for mixed sizes
The base plate holes correspond to both S12 and S10 contactors, meeting the requirement for low current in star-connected contacts.
Save on star contactor costs
The star contactor can be selected with a smaller S10 size, reducing the overall procurement cost.
Stable structure and easy to install
The metal base plate provides stable support for the three contactors, reducing operational vibration.
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3RA1972-2F
The Siemens SIRIUS 3RA1972-2F is a dedicated mounting base for star-delta (YD) starters. It can accommodate three 3RT1 series contactors side by side, forming a combination structure of main contactor, delta contactor and star contactor. This allows users to easily assemble star-delta starting circuits according to site requirements. The installation is simple and the structure is stable.
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3RA1972-2A
The Siemens SIRIUS 3RA1972-2A is a dedicated mounting base for reversible (rotational) starters. It can fix two S12 size 3RT1.7 contactors side by side on the same base, making it convenient for users to assemble reversible motor starter circuits. It is usually combined with a busbar assembly and mechanical interlock to form a complete device, with a net weight of approximately 2.322 kg.
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3RA1963-2B
The Siemens SIRIUS 3RA1963-2B is a dedicated wiring harness for S10 size star-delta (YD) starters, used to connect delta contactors and star contactors (both 3RT1.6 type). It includes phase sequence conversion and neutral bridging functions, and the busbar connection eliminates the need for a terminal box. It weighs approximately 1.813 kg and is suitable for star-delta starting of small and medium power motors.