Allen-Bradley 1769-PA2 Power Supply Module For 1769 Compact IO

The Allen-Bradley 1769-PA2 is a Compact I/O expansion power supply module for 1769 Compact I/O racks, delivering 5 V DC and 24 V DC power to connected I/O modules in a CompactLogix system. It can be mounted on a DIN rail or panel and supports connections on either side of the module, with a total capacity for up to 16 I/O modules (eight on each side). In the 1769 Compact I/O power-supply family, catalog numbers include 1769-PA2 and 1769-PA2K, as well as 1769-PA4 and 1769-PA4K for alternative power configurations. The installation guide notes a power-distribution distance rating of 8 and confirms that I/O modules can be placed on either side of the power supply to power up to 16 modules. The PA2 is designed for operating environments of 0 to 60 C, with storage temperatures from -40 to 85 C and relative humidity of 5 to 95% (non-condensing). Wiring uses 14 AWG (2.5 mm2) solid copper conductors rated for at least 90 C, with insulation up to 1.2 mm. These specifications—standing as part of Rockwell Automation’s Compact I/O expansion power supplies—define how the 1769-PA2 powers adjacent I/O modules in a Compact I/O bank.