Allen-Bradley 937TH-DISAR-DC2 Switch Amplifier

The Allen-Bradley 937TH-DISAR-DC2 (Series A) Switch Amplifier, part number 302486, conditions and amplifies discrete signals from electromechanical limit switches for reliable digital input interfacing in PLC-based control systems. Designed for panel or DIN rail mounting, it provides a conditioned digital output to controller I/O and is commonly installed in control panels, machine safety circuits, conveyor systems, and automated production lines where dependable detection of switch states is required. Key features include status LED indicators for signal and power presence (model dependent), power supplied by a DC control voltage (model dependent), and compatibility with industrial control systems and discrete input networks. Operating inside an enclosure under industrial-rated conditions, the 937TH-DISAR-DC2 serves as a signal-conditioning and amplification module, with common replacements including Allen-Bradley 937TH-DISAR-DC1, 937TH-DISAR-AC2, and Rockwell 937TH Series Switch Amplifier Module.