Schneider Electric 8030PS21 Power Supply Unit

The Schneider Electric 8030PS21 is a Square D SY/MAX Class 8030 power supply module that converts 120 VAC input into a 5 VDC output to support the logic and I/O network of an 8030 automation system. It is designed to power up to 128 I/O points in the SY/MAX Class 8030 environment, providing the essential supply for digital I/O and TTL‑level circuitry. The unit accepts 120 VAC at 50/60 Hz and delivers a 5 VDC output to feed the control circuitry across the rack, panel, or backplane without requiring external adapters. This PS‑21 power supply is used within Square D SY/MAX automation setups to ensure stable voltage for distributed I/O modules and peripheral logic, making it a common choice for industrial control panels and machine automation installations. When integrating or replacing, verify compatibility with 8030‑class modules and correct mounting in the SY/MAX backplane to maintain system reliability and consistent I/O operation.