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.
Product Positioning
The 3RA1963-2B is a wiring kit for Siemens SIRIUS series S10 size star-delta starters. It is used to connect two 3RT1.6 contactors and complete the output phase sequence conversion, and is suitable for small and medium power motor applications.
Core Product Advantages and Features
Designed specifically for S10 star-delta
The dimensions and hole positions correspond to the 3RT1.6 type contactor, requiring no additional machining during installation.
Includes phase sequence conversion function
The output phase sequence has been adjusted at the factory to ensure the correct switching direction between star and delta configurations.
Neutral bridging busbar
The kit includes a neutral bridge busbar, simplifying bridging wiring for delta connections.
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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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3RA1963-2A
The Siemens SIRIUS 3RA1963-2A is a bus connection group required for an S10 size forward and reverse (reversible) starter. It connects two 3RT1.6 type contactors to the input and output sides via a bus, and completes the phase sequence conversion on the output side. The main circuit is a 3-pole design, which is suitable for use with a base plate and mechanical interlock to form a complete circuit.
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3RA1962-2A
The Siemens SIRIUS 3RA1962-2A is a dedicated mounting base for reversible (rotational) starters. It can fix two S10 size 3RT1.6 contactors side by side on the same base, which facilitates the assembly of reversible motor starter circuits. It is usually combined with a busbar assembly (such as 3RA1963-2A) and a mechanical interlock to form a complete device.