Siemens 3RA1963-3E Link Rail Set for Delta-Star (Wye) Contactor Combinations, Output Side Connection Original Brand New

Overview

The Siemens 3RA1963-3E is an essential accessory designed for creating a reliable and efficient star-delta (wye-delta) motor starter combination. This specialized set of link rails provides a pre-engineered, secure electrical connection between the output terminals of the main/delta contactor (3RT1.6 series) and the star (wye) contactor (3RT1.5 series). By using these dedicated link rails, you eliminate the need for manual wiring, significantly reducing installation time and the potential for wiring errors, while ensuring a robust and professional-looking setup.

Key Features & Benefit

• Optimized for Siemens Components: Specifically engineered for a perfect fit and seamless connection between Siemens 3RT1.6 and 3RT1.5 contactors, guaranteeing compatibility and performance.
• Time-Saving Installation: The pre-fabricated design allows for quick, tool-free or minimal-tool assembly, drastically cutting down on commissioning time and labor costs.
• Enhanced Reliability: Provides a secure and permanent electrical connection, reducing the risk of loose wires, shorts, or arc flashes that can occur with traditional wiring methods.
• Improved Safety: The solid link design minimizes exposed live parts, increasing the safety of the installation and maintenance personnel.
• Compact & Professional Design: Creates a clean, organized, and space-efficient assembly within your control panel, improving airflow and ease of maintenance.
• Durable Construction: Built with high-quality materials to withstand the rigors of industrial environments, ensuring a long service life.

Function

The Siemens 3RA1963-3E link rail set serves a critical function in a star-delta motor starter circuit. It provides the final output-side electrical connection from the main delta contactor to the star (wye) contactor, which is then connected to the motor terminals. This arrangement is fundamental to the star-delta starting method, which is used to reduce the high inrush current typically associated with starting large induction motors. The 3RA1963-3E ensures the correct phase relationship and current path are established for the smooth and reliable operation of the motor.

Technical Specification

• Product Designation: Set of link rails
• Product Number: 3RA1963-3E
• Compatibility: Designed for use with Siemens 3RT1.6 (Delta Contactor) and 3RT1.5 (Star/Wye Contactor)
• Connection Side: Output side
• Application: Star-delta (wye-delta) starter combinations
• Package Contents: 1 set of link rails (as shown in product images)

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