Overview
The 6ES7403-1TA01-0AA0 is a Siemens SIMATIC S7-400 ER1 extension rack with 18 slots, accepting signal modules only and allowing two redundant power supplies to be plugged in. It carries a interface, measures 482.5 mm wide by 290 mm high by 27.5 mm deep, and weighs 4200 g.
Lifecycle and sourcing
Siemens lists the 6ES7403-1TA01-0AA0 as phase-out, discontinued as of 2025-10-01. Remaining units are available through surplus and broker channels; send an RFQ to confirm quantity and lead time for a last-time-buy or line-down need.