Schneider Electric (Square D) 9037HG30Z20 Tank Float Switch 50 PSI MAX Close On Rise

The Schneider Electric (Square D) 9037HG30Z20 is a dependable 50-amp, single-pole float switch intended for use in a variety of HVAC applications. This adaptable device functions as a liquid-level controller, using a buoyant float mechanism to close or open circuits in response to rising and declining liquid levels. When utilized in hydronic heating systems, the 9037HG30Z20 can operate pumps, boilers, or valves based on water levels in tanks or sumps. As the liquid level rises and the float lifts, the switch activates, causing pumps or valves to open to fill the system. When the level drops, however, the switch deactivates, keeping the pump from running dry or the boiler overheating. This automatic control guarantees that the equipment operates optimally and safely. It keeps pumps from running without water and preserves furnaces.