Allen-Bradley 1769-PA4 Power Supply

The Allen-Bradley 1769-PA4 is a CompactLogix I/O expansion power supply, described as a CMPLX Selectable AC 4A/2A Power Supply, purpose-built to feed both the control logic and field power rails for a 1769 I/O rack in a CompactLogix system. It accepts 120/240 VAC input and delivers two independent DC outputs: 5 VDC at up to 4 A for the logic rail and 24 VDC at up to 2 A for the I/O field rail, providing a compact, centralized power solution for 1769 modules. This module is designed for use with the 1769 Compact I/O family and is installed in the rack to supply power to compatible modules and the 1769 bus. Typical applications include PLC automation panels using CompactLogix controllers where reliable dual-rail power is required for 5V logic devices and 24V I/O devices.