Siemens 6ES7303-1EA00-0AA0 Power Supply Module

Siemens 6ES7303-1EA00-0AA0 Power Supply Module, Ver. 4, is a SIMATIC S7-300 backplane power unit identified by the part number 6ES7303-1EA00-0AA0. It installs in a SIMATIC S7-300 rack to provide the electrical supply to the CPU and I/O modules sharing the backplane, enabling reliable operation of the PLC system in automation environments. As part of the PS 303 family, this power supply module supports standard S7-300 configurations and interfaces with Siemens' backplane rails for a compact, space-efficient power solution in automated machinery. Applications include powering the main controller and peripheral modules within Siemens SIMATIC S7-300 installations, from small bench setups to in-plant automation cabinets.