Siemens 3RK1903-0BA00 Power Module

Description

Siemens 3RK1903-0BA00 Power Module

Product Dimensions：

The Siemens 3RK1903-0BA00 is a specialized Terminal Module belonging to the SIRIUS ET 200pro distributed I/O system. It is specifically designed to house and provide electrical connectivity for motor starter modules within the ET 200pro range.

Product Detailed Description

The 3RK1903-0BA00 serves as the base mechanical and electrical interface for a motor starter. In a distributed control architecture, this terminal module is mounted onto the rack, allowing the motor starter electronics to be plugged in. It handles the power bus connections (400V) and the communication interface, ensuring that the motor starter can be replaced without disturbing the permanent wiring.

Technical Parameters

Product Advantages

• Modular “Permanent Wiring”: The main advantage is that the power and communication cables are wired to this terminal module, not the motor starter itself. This allows for “Hot Swapping”—replacing a motor starter module without disconnecting cables.
• High Protection Rating: When fully assembled with a motor starter, it achieves an IP65/67 rating, meaning it can be mounted directly on a machine outside of a control cabinet.
• Robust Power Bus: Integrated busbars allow for the easy daisy-chaining of power between multiple motor starters, reducing the complexity of the cable harness.
• Reduced Installation Time: The plug-and-play nature of the associated electronics significantly speeds up commissioning and field repairs.

Important Considerations & Precautions

• Torque Requirements: Since this module handles high-current 400V power, it is critical to adhere to the manufacturer’s torque specifications for terminal screws to avoid arcing or overheating.
• Environmental Seals: Ensure the seals and gaskets are correctly seated during installation to maintain the IP65/67 rating, especially in wash-down or dusty environments.
• Component Matching: This terminal module must be paired with compatible ET 200pro motor starters (e.g., High Feature or Standard variants). Always verify the compatibility in the Siemens Industry Mall or TIA Selection Tool.
• De-energize Before Wiring: Although the system supports module swapping, the initial wiring of the terminal module must be done with the main power supply disconnected.

Product Applications

The 3RK1903-0BA00 is a staple in decentralized automation:

• Conveyor Systems: Distributed control of motors across long production lines in logistics or automotive plants.
• Automotive Assembly: Direct mounting on robotic cells where cabinet space is limited.
• Food & Beverage: Used in areas where equipment must withstand frequent cleaning, thanks to its high IP rating.
• Packaging Machinery: Providing local motor control for various auxiliary belts and drives within a single machine frame.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Please make an inquiry for more models：