Siemens 3RK1903-3EA10 15 mm Terminal Module

Description

Siemens 3RK1903-3EA10 15 mm Terminal Module

Product Dimensions：

The Siemens 3RK1903-3EA10 is a specialized terminal module belonging to the SIMATIC ET 200S distributed I/O and motor starter ecosystem. Specifically, it is a 65 mm Terminal Module (TM) designed to host and interface with the ET 200S Frequency Converter (FC) modules or intelligent motor starter power modules.

Product Detailed Description

The 3RK1903-3EA10 acts as the mechanical and electrical base for specific Siemens ET 200S frequency converters or inverter power modules (such as the ICU24 or ICU24F series). Within the ET 200S architecture, terminal modules are permanently wired into the control cabinet’s DIN rail. The actual electronic components (inverters/starters) are then hot-swapped or plugged into these modules, isolating the field wiring from the active electronics.

Technical Parameters

Product Advantages

• Permanent Wiring Solution: Field wiring (power and motor lines) is connected directly to the terminal module. The electronic frequency inverter can be plugged in or replaced without touching any of the field wiring connections.
• Integrated Self-Assembling Busbars: It automatically extends the internal voltage and communication backplane to adjacent modules when snapped together on a DIN rail, eliminating complex jumper wiring.
• High Availability & Safety: Mechanically robust housing protects internal connections from physical stress, vibrations, and dust within an IP20-rated enclosure.
• Optimized Cabinet Footprint: At 65 mm wide, it maximizes space inside electrical control panels while supporting high-power motor applications.

Important Considerations & Precautions

• Lifecycle Note: Siemens has formally shifted the SIMATIC ET 200S product family to a legacy/spare part status, recommending the newer SIMATIC ET 200SP system for new project layouts. Ensure this part is sourced for exact maintenance replacements.
• No Power Infeed: This specific variant (-3EA10) is designed to pass power down the bus but does not feature the main power entry terminals. If you need to bring the primary 3-phase line supply into a new potential group, you must pair it with a terminal module that includes a power infeed (e.g., variants like 3RK1903-3EC00).
• Isolation: Always isolate the main 3-phase and 24 V DC auxiliary line supplies before mounting or doing wiring modifications to the terminals to prevent accidental short circuits.

Product Applications

The 3RK1903-3EA10 is utilized anywhere a decentralized drive framework is established using the ET 200S system:

• Conveyor Technology: Managing distributed AC motors on sorting and logistical conveyor belts in warehousing and manufacturing plants.
• Automotive Assembly: Supporting localized variable frequency drives on automated production lines.
• Machine Tooling: Providing the terminal interface for compact motor controls and small fan/pump frequency regulation within modular machine designs.

Shipping Port: Xiamen, China

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