Siemens 3RA2943-2C Electrical Wiring Kit for Star-Delta (Wye-Delta) Starter Sizes S3, S3, S2 Original Brand New

Overview

The Siemens 3RA2943-2C is an essential electrical wiring kit designed for the fast and reliable assembly of star-delta (wye-delta) starters. This specific kit is configured to interconnect three contactors of the following sizes: Size S3, Size S3, and Size S2. It significantly reduces the time and complexity associated with manually wiring the power circuit between the main, star, and delta contactors in a star-delta starting configuration. The pre-fabricated and insulated connections ensure a professional, secure, and touch-protected installation.

Benefit

• Faster Installation: Pre-engineered wiring cuts down assembly time dramatically compared to individual wire runs.
• Reduced Wiring Errors: Factory-made connections minimize the risk of incorrect wiring, ensuring reliable operation.
• High Reliability: Secure and durable connections resist vibration and thermal stress.
• Touch Protection: Insulated components enhance safety for personnel during and after installation.
• Professional Appearance: Creates a neat and organized connection layout within the control panel.
• Genuine Siemens Quality: Ensures compatibility and long-term performance with Siemens SIRIUS industrial controls.

Function / Application

The 3RA2943-2C wiring kit serves as the electrical busbar connection for the power circuit in a star-delta starter. Star-delta starters are commonly used to reduce the high inrush current when starting large asynchronous motors. The kit connects:

1. The Main Contactor (Size S3)
2. The Delta Contactor (Size S3)
3. The Star Contactor (Size S2)

It is specifically intended for use with the SIRIUS modular system, ensuring seamless integration with corresponding Siemens contactors and motor protection components.

Technical Specification

• Product Number: 3RA2943-2C
• Product Type: Wiring Kit, Electrical
• Application: Star-Delta (Wye-Delta) Starter Assembly
• Contactor Sizes: S3, S3, S2 (Main, Delta, Star)
• Compatibility: Siemens SIRIUS modular system
• Mounting: Direct electrical connection between contactors

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