Square D by Schneider Electric 9013FHG12J52 Pressure Switch

Square D by Schneider Electric 9013FHG12J52 Pressure Switch is a Pumptrol electromechanical pressure switch that automates start/stop control for air compressors and small pumping systems based on system pressure. The 12J52 suffix denotes a 40–150 psi set-point range with a typical cut-out around 125 psi, and distributor datasheets show this model in a 2-pole configuration with SPDT variants such as 9013FHG12J52P. Rated for up to 575 VAC and up to 1 HP, it provides reliable switching for higher-voltage compressor or pump circuits. Common applications include residential and light-commercial air compressors, booster pumps, sump or well pumps, and HVAC equipment that require automatic pressure-based shutoff. This model is part of the Square D Pumptrol family, a robust line of pressure switches designed for straightforward integration into control circuits, with contact configurations that may vary by suffix. When selecting this part for a replacement, ensure the suffix matches the desired electrical and pressure-specification variant for your equipment.