Square D 9013FHG12J52M1X Pressure Switch Lever

Square D Pumptrol 9013FHG12J52M1X is an electro‑mechanical pressure switch with a lever‑operated on/off control designed to automatically start and stop air compressors and small pumps. It features a fixed 30 psi differential within a 70–150 psi operating range, delivering repeatable cycling without field adjustment. The device uses two Form C contacts (DPST) and is rated up to 10 A at 120–600 VAC or 125–600 VDC, with screw‑clamp wiring terminals and 1/4 in FNPT internal ports for secure connections. It is UL and CSA listed, with a NEMA 1/IP20 enclosure rating, and relies on a diaphragm sensing element for reliable actuation; installation notes also reference a manual cut‑out lever for controlled load disengagement.