This Square D 9037HW33 closed-tank float switch for a power circuit and use with water, hydraulic oils, and corrosive fluids attaches with screw-in bushing side-mounts to a closed-tank and activates a condensate or other pump. It has a NEMA 4 enclosure for protection and contacts that close on liquid rise. The float on this switch is positioned on the right at 45 degrees. Square D switches are manufactured by Schneider Electric. Square D brand pressure, float, and limit switches have been synonymous with safety, quality, and reliable performance for over 100 years. First launched by Detroit Fuse and Manufacturing in 1902, the Square D brand and its products continue to earn customer trust today.