Overview

The Siemens 3RA2923-2BB2 is an essential wiring kit designed for the SIRIUS modular system. It provides the necessary electrical and mechanical connections for assembling a Wye-Delta (Star-Delta) starter for Size S0 contactors, using spring-type terminals. This integrated kit simplifies the installation process for motor starters, ensuring a reliable and safe connection.

Benefit

• Time-Saving Assembly: Pre-engineered electrical and mechanical connections drastically reduce the time and complexity of building a YD starter compared to traditional wiring methods.
• High Reliability: The integrated mechanical and electrical interlocks ensure safe and compliant operation by preventing simultaneous energization, which is critical for motor protection.
• Secure Connections: Utilizes spring-type terminal technology for vibration-proof and maintenance-free electrical contacts, ensuring long-term operational integrity.
• System Compatibility: Seamless integration with other components in the Siemens SIRIUS 3RT2 contactor and 3RA2 motor starter family.
• Compact Design: Provides a neat, professional, and space-saving solution within the control cabinet.

Features & Functions

• Integrated Wiring Solution: Combines both the electrical power circuit and the mechanical connection components into one convenient kit.
• Wye-Delta Starter Compatibility: Specifically engineered for use with Wye-Delta (YD) starter assemblies, which are commonly used to reduce inrush current when starting large motors.
• Spring-Type Terminals: Utilizes spring-type connection technology for fast, reliable, and vibration-proof wiring, reducing installation time and eliminating the need for retightening screws.
• Mechanical Interlocking: Includes crucial mechanical interlocking to prevent the main contactor and the star/delta contactors from being energized simultaneously, which is a critical safety feature in YD starters.
• Size S0 Standard: Perfectly fits Size S0 contactors within the Siemens SIRIUS series, ensuring seamless compatibility.
• High-Quality Siemens/SIRIUS: Manufactured by Siemens as part of the reliable SIRIUS industrial controls family.