SIMATIC S7-400 ER1 aluminum expansion rack / 6ES7403-1TA11-0AA0

SIMATIC S7-400 ER1 aluminum expansion rack. Exact ordering code and specifications reviewed in the May 2017 manufacturer catalogue; verify bus architecture and project configuration before ordering. Current lifecycle and availability are not established.

Manufacturer part number: 6ES7403-1TA11-0AA0
Brand: Siemens
Category: PLC and HMI
Catalog status: Request a quotation

Technical specifications

Controller family: SIMATIC S7-400
Module designation: ER1 aluminum expansion rack
Single-width slots: 18
Communication bus: No
P bus: Yes
Width (mm): 482.5
Height (mm): 290
Depth (mm): 27.5
Approximate weight (g): 2500
Application scope: Expansion units only; P bus only; restricted functionality
Document pages: PDF 122, 123
Reviewed document edition: ST 400 / May 2017 / E86060-K4678-A151-A1-7600

Manufacturer technical catalog · ST 400 / May 2017 / E86060-K4678-A151-A1-7600 · en · PDF · ST 400 / May 2017 / E86060-K4678-A151-A1-7600Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6ES7403-1TA11-0AA0 · Checked: 2026-10-22Official manufacturer source

This sheet provides a quick technical summary. For design, installation and final selection, review the latest official manufacturer documentation and verify the complete part number.