Siemens AG 6EW 1380-4AB01 Power Supply Module

Siemens 6EW1380-4AB01 Power Supply Module is a SIPAC-era 24 V DC power source for Siemens automation systems, delivering 24 V DC at up to 10 A from a 115/230 V AC supply (50/60 Hz). It is designed for legacy Siemens SIPAC controllers and is documented as compatible with the 6ES5 951-7LB21 programmable controller module, making it suitable for powering PLC logic and I/O in Siemens control cabinets. The module combines an AC input stage with a regulated DC output in a plug-in form factor, with the part number 6EW1380-4AB01. Its verified specifications include AC input: 115/230 V AC, 50/60 Hz; DC output: 24 V DC, 10 A; and UL listing references for the model in Siemens’ certification materials. This power supply is commonly used to provide the essential 24‑volt rail for Siemens automation gear in older panel builds, enabling reliable operation of PLCs, relays, and peripheral devices that require a stable 24 V supply. The 6EW1380-4AB01 is listed across distributor catalogs as a genuine Siemens part, reflecting its role in maintaining legacy SIPAC-era installations.