Siemens 3RA1963-3D Link Rail Set for 3RT1.6 Reversing Contactor Assemblies Original Brand New

Overview

The Siemens 3RA1963-3D is a specialized accessory from the SIRIUS line of industrial controls, engineered to simplify the electrical connection of reversing starter assemblies. This set consists of robust link rails and the necessary connection screws, providing the crucial phase-swapping required for reversing motor operation. By replacing traditional, manual wiring, the 3RA1963-3D significantly reduces installation time, eliminates wiring errors, and ensures a clean, professional appearance within the control cabinet. It is specifically compatible with the 3RT1.6 power contactor frame size, making it a perfect fit for high-performance motor control applications.

Key Benefit

• Efficient Phase Swapping: Easily configure reversing contactors for infeed side applications.

• Durable Construction: High-quality Siemens engineering ensures long-lasting performance.

• Complete Set: Includes all necessary connection screws for seamless installation.

• Time-Saving Installation: Designed for quick assembly and reduced downtime.

• Compatibility: Specifically for Siemens 3RT1.6 reversing contactor assemblies.

Function

The 3RA1963-3D set is installed on the infeed side (L1, L2, L3 terminals) of two mechanically interlocked 3RT1.6 contactors that form a reversing starter. The link rails are uniquely shaped to connect the incoming three-phase power to the two contactors in such a way that the phase sequence is swapped (e.g., L1-L2-L3 becomes L3-L2-L1 or similar) for the secondary contactor. This phase-swapping action is essential for reversing the direction of rotation of a three-phase asynchronous motor. The connection screws ensure a secure, high-conductivity connection.

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