Westinghouse NSB DSL-22-10A Three-Phase Contactor

The Westinghouse DSL-22-10A is a 40A, 120V coil, three-phase industrial contactor designed for reliable motor starting and power switching in commercial and manufacturing settings. With a 40A current rating and a 120V coil, it handles three-phase loads up to 20 HP, making it suitable for energizing and interrupting motor circuits in HVAC equipment, compressors, conveyors, pumps, and other automated machinery. Its electromechanical design supports dependable operation in industrial control panels and machinery environments, where smooth, controlled motor start sequences are essential. Common replacements include Allen-Bradley 100-C43D10, Siemens 3RT2036-1AK60, and Schneider Electric LC1D40G7.