Siemens 3RK1903-0AA00 Power Module / Terminal Module

Description

Siemens 3RK1903-0AA00 Power Module / Terminal Module

Product Dimensions：

The Siemens 3RK1903-0AA00 is a specialized accessory for the SIRIUS motor starter range, specifically designed as a Bus Connection Plug (or Power Module Connector) for the ET 200S distributed I/O system. It is a critical component for establishing the internal power bus for motor starter modules.

Product Detailed Description

The 3RK1903-0AA00 is a “Power Bus” connector used to link the power busbars between adjacent terminal modules in an ET 200S motor starter assembly. It ensures the seamless distribution of the main 400V AC power across the motor starter line-up, allowing multiple starters to share a single power feed.

Technical Parameters

Product Advantages

• Modular Efficiency: Enables the “daisy-chaining” of power across multiple motor starters without the need for complex external wiring or jumper cables.
• Tool-less Assembly: Designed for rapid plug-and-play installation, significantly reducing assembly time for control cabinets.
• Compact Footprint: By utilizing internal bus connections, it eliminates the bulk of traditional power distribution blocks, saving valuable DIN rail space.
• High Reliability: Ensures a robust, low-resistance electrical connection that is vibration-resistant, which is essential for industrial environments.

Important Considerations & Precautions

• Current Limits: Observe the maximum total current of the power bus. If the combined load of the motor starters exceeds the rating of the bus connection (typically 40A or 50A), a new power feeder module must be installed.
• Compatibility: This specific part is designed for the ET 200S series. It is not interchangeable with the newer ET 200SP or other Siemens motor starter lines.
• Installation Sequence: Always ensure the power is disconnected before inserting or removing the bus connection plug to prevent arcing and damage to the contacts.
• Mechanical Seating: Ensure the plug is fully seated and clicked into place; a loose connection can lead to overheating and potential fire hazards.

Product Applications

The 3RK1903-0AA00 is used wherever Siemens ET 200S motor starters are deployed:

• Conveyor Systems: Powering a series of small motors along a production or sorting line.
• Automotive Assembly: Distributing power to decentralized motor control centers on the factory floor.
• Packaging Machinery: Providing a modular power solution for multiple integrated drives and starters.
• HVAC Control: Managing banks of fans or pumps in large-scale building automation systems.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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