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.
Product Positioning
The 3RA1953-3D is the top connection busbar of the Siemens SIRIUS series S6 size reversing contactor assembly. It replaces manual wiring with prefabricated busbars, helping panel manufacturers quickly assemble large motor forward and reverse control circuits.
Core Product Advantages and Features
Prefabricated connection bar design
Replacing loose wires with pre-formed copper busbars reduces wiring errors and construction time.
Applicable to S6 large combination
Designed specifically for parallel reversing combinations of 3RT1.5 series contactors, suitable for high-current motor applications.
Phase sequence switching integration
The outgoing side has a built-in phase sequence switching configuration, which simplifies the wiring logic of the forward and reverse circuits.
Modular maintenance
When damaged or modified, the connector can be replaced individually without reconfiguring the entire contactor group.
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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.
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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.