Industrial SQD-95-125-AC-LEVER Pressure Switch

Square D Industrial Pressure Switch with lever and unloader (9013FHG family) regulates tank pressure in small electric air compressors, with a factory setting of 95–125 psi and a fixed differential. The diaphragm‑actuated switch uses two‑pole snap‑action contacts and includes a built‑in unloader valve to vent head pressure at cut‑off, easing motor start‑ups. Piping is 1/4 in FPT for the process connection and it provides two conduit entries at 1/2 in NPT for wiring and mounting; the unit is offered in a NEMA 1 enclosure with an optional 3R enclosure for additional protection. It is UL Listed, CSA certified, and RoHS compliant, designed for 50/60 Hz operation and commonly rated for 115 V AC, single‑phase. Suitable for compressors up to about 5 HP and capable of regulating tank pressures up to roughly 230 psi depending on configuration, the switch is built for reliable, repeatable pressure control in industrial air applications while maintaining the ON/OFF lever and built‑in unloader for straightforward operation. This lever‑operated pressure switch is a durable choice for air regulator systems, delivering precise cut‑out while preserving consistent cycle behavior over time.