Siemens 6ES7307-1EA00-0AA0 Regulated Power Supply

Siemens 6ES7307-1EA00-0AA0 is the SIMATIC S7-300 PS307 regulated power supply that provides clean 24 V DC power for the PLC and its I/O modules, delivering up to 5 A of current. It accepts 120/230 V AC input and generates a 24 V DC output, with electronic short‑circuit protection (non‑latching) and an output present LED indicator to confirm power is available. The supply is built as a SELV circuit with input-to-output isolation rated at 250 VAC and a high‑voltage test rating of 4200 VDC. Typical efficiency is around 87%, with a corresponding power consumption near 138 W under load. The PS307 supports parallel wiring to increase available current when multiple PS307 units are used in tandem, and the 24 V output is regulated to maintain stable voltage for PLC operation. This module is designed for SIMATIC S7-300 installations and is intended to fit the PS307 power supply slot within the rack, serving as the primary 24 V source for CPU, digital I/O, and peripheral modules.