Product Overview
The Allen-Bradley 1762-OB32T/A is a high-density solid-state digital output module designed for the MicroLogix 1200 and MicroLogix 1400 programmable controller families, providing 32 sourcing (positive-switching) 24V DC outputs in a compact DIN-rail or panel-mount package. The “/A” designation identifies this as the Series A hardware revision of the 1762-OB32T catalog number. As a source output module, the 1762-OB32T/A supplies positive voltage to connected field devices when an output is energized, making it directly compatible with sinking input devices and common industrial loads such as indicating lights, solenoid valves, and small DC motors .
The 1762-OB32T/A organizes its 32 outputs into two isolated groups of 16 channels each, with each group capable of carrying up to 2.0A continuous current and the entire module rated for 4.0A maximum continuous current at 60°C . This group isolation architecture allows the module to interface with field devices operating on separate power circuits or with different grounding references within the same control panel, a practical advantage in mixed-equipment installations. The output voltage range of 10.2 to 26.4V DC accommodates nominal 24V DC systems while tolerating the voltage fluctuations typical of industrial power supplies .
The 1762-OB32T/A occupies a single expansion I/O position on the MicroLogix controller’s bus and draws 175 mA from the 5V DC backplane rail, with no additional 24V DC bus current requirement . The module carries UL 508 and CSA C22.2 No. 142 certifications and is approved for Class I, Division 2 hazardous locations, extending its applicability to environments where flammable gases may be present under abnormal conditions . Its 40.4 mm width and 200 g weight reflect a compact design that maximizes I/O density without consuming excessive panel space.
