Siemens SIRIUS 3RA2933-1BB1 Wiring Kit for Fuseless Reversing Load Feeders, Size S2 Original Brand New

Overview

The Siemens SIRIUS 3RA2933-1BB1 Wiring Kit is an essential accessory for assembling compact and efficient reversing load feeders (reversing starters) in industrial control applications. This kit provides the necessary electrical and mechanical components to create a complete, pre-wired, and reliable connection between the circuit-breaker and contactors for a fuseless reversing starter configuration, specifically for devices of Size S2. It ensures a quick, error-free setup on a standard mounting rail.

Key Benefit

• Quick Assembly: Significantly reduces wiring time and complexity, streamlining the assembly of reversing load feeders.
• High Reliability: Provides a secure and durable electrical and mechanical connection, minimizing the risk of wiring errors.
• Compact Design: Facilitates a space-saving arrangement of components within the control cabinet.
• System Compatibility: Designed for seamless integration with Siemens SIRIUS modular system components, including the 3RV2 motor starter protector and 3RT2 contactors (Size S2).
• Standard Mounting: Includes mechanical connectors for secure and easy mounting on a standard DIN rail.
• Fuseless Solution: Optimized for fuseless load feeder configurations, often resulting in lower maintenance and faster troubleshooting.

Function and Application

The 3RA2933-1BB1 wiring kit is a purpose-built solution for connecting the main power circuit components of a reversing motor starter:

1. Electrical Connection: It provides the necessary busbar or linking components to establish the power circuit connections between the motor starter protector (circuit-breaker) and the two contactors required for the reversing function.
2. Mechanical Connection: The kit includes mechanical connectors or link modules that physically join the devices (e.g., 3RV2 motor starter protector and 3RT2 contactors) for a robust and compact block assembly on the DIN rail. This mechanical stability is crucial in industrial environments.

Application

Used to build reversing motor starters for 3-phase AC motors where a change of rotation direction is required, primarily in automation and control panel construction.

Installation and Compatibility

The 3RA2933-1BB1 kit is specifically designed for:

• Contactor Size: S2 (e.g., SIRIUS 3RT2 contactors)
• Circuit-Breaker Size: S2 (e.g., SIRIUS 3RV2 motor starter protectors)
• Load Feeder Type: Fuseless Reversing Starter (reversing load feeder)

The included mechanical connectors enable secure and simple assembly onto a standard mounting rail (DIN rail).

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