Overview
The 6ES7461-0AA01-0AA0 is a Siemens SIMATIC S7-400 IM 461-0 receiver interface module used for central coupling without PS transfer, with C-bus. It operates on a 5 V DC supply drawing 0.29 A and dissipating 0.45 W. This module is in phase-out status with a discontinuation date of October 1, 2025.
The IM 461-0 acts as a receiver in a central coupling configuration, linking an S7-400 rack to an expansion rack without transferring power supply (PS) and using the C-bus for communication. The 0.29 A draw on the 5 V DC backplane is the key budget figure — it tells the panel builder how much of the rack's 5 V capacity this module consumes, leaving the remainder for other interface and I/O modules.
Siemens has classified the 6ES7461-0AA01-0AA0 as phase-out, with an official discontinuation date of October 1, 2025. After that date, Siemens will no longer manufacture or supply this module through standard channels. For buyers needing this part for an existing S7-400 system, sourcing now through the remaining production window or via the surplus/broker market after discontinuation is the practical strategy.