Square D 9035DR1 Float And Level Control Switches

Square D 9035DR1 Float and Level Control Switches are electromechanical level switches used to automatically regulate liquid levels in open or closed tanks. As part of Square D’s Class 9035 float switch family, the DR-type offers a two-pole contact arrangement with one normally open and one normally closed circuit, enabling simultaneous pump control and an alarm or secondary circuit from a single device. The 9035 family supports multiple tank configurations, including open-tank DR/DW variants and closed-tank variants, with DR1 denoting a specific DR-series configuration within that lineup. The device operates via a float actuator that moves with the liquid level to switch the circuits as the level rises or falls, making it suitable for sump pumps, open-tank level control, and process-tump interlocks in industrial settings. UL-listed under file E12158, CCN NKPZ, these switches are designed for straightforward wiring into control panels and can drive contactors or relays in agricultural, industrial, and municipal applications.