ASCO SE42A Pressure Switch Tri Point 125 to 250 VAC

ASCO SE42A Tri-Point pressure switch delivers reliable control for electrical circuits up to 5 A at 125–250 VAC, with an ambient operating temperature rating up to 60°C. Built around ASCO’s Tri-Point alternating fulcrum balance plate, this switch uses a three‑point actuation geometry to improve setpoint stability and repeatability through pressure cycling. The 125/250 VAC rating supports common line voltages for general‑purpose control in industrial equipment that relies on pressure sensing to start or stop a process, such as safety interlocks or control relays in gas, air, or liquid systems. The Tri‑Point design is a hallmark of ASCO’s SE/S‑Series family, distributing mechanical load across three fulcrums to maintain consistent actuation under varying pressure and load conditions.