3RA1953-3G
The Siemens SIRIUS 3RA1953-3G is a dedicated connector for star-delta (YD) starters. It is used to connect the output side of an S6-size 3RT1.5 delta contactor to an S3-size 3RT2 star contactor. It is suitable for use with DC coil versions to form an S6-S6-S3 star-delta starting circuit.
Product Positioning
The 3RA1953-3G is a connection group required for Siemens SIRIUS series star-delta starters. It is used to connect the output side of an S6 size delta contactor and an S3 size star contactor, and is suitable for motor starting applications with low star circuit current.
Core Product Advantages and Features
Cross-size connection design
Designed specifically for use with the smaller S3 star contactor, allowing for seamless connection despite the size difference between the two contactors.
Applicable DC coil version
The specifications correspond to DC coil contactor combinations; when selecting a model, pay attention to the coil voltage type.
Output side connection
The connecting busbar acts on the contactor output side to complete the phase sequence wiring required for star-delta switching.
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3RA1954-2A
The Siemens SIRIUS 3RA1954-2A is a cross-size mechanical interlock that can be installed between 3RT10, 3RT12, and 3RT14 series contactors of sizes S6, S10, and S12. It prevents two contactors from engaging simultaneously through a mechanical structure and is commonly used in forward and reverse motor starting circuits as a safety backup mechanism in addition to electrical interlocking.
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3RA1953-3D
The 3RA1953-3D is the top connection busbar (busbar) of the SIRIUS S6 size reverse starter assembly. It is used with the 3RT1.5 contactor to replace the traditional loose wire connection method, improve wiring efficiency and reliability, and is suitable for large motor forward and reverse control panels.
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3RA1953-2M
The 3RA1953-2M is a dedicated busbar connector for S6 size reversible combinations, including a terminal screw kit. It is suitable for 3RT1.5 contactors using busbar wiring (frameless terminals) and assists in completing forward and reverse main circuit connections.