Schneider Electric 9037HG33 Industrial Control Relay

The Schneider Electric Square D 9037HG33 float switch (Pumptrol) is a closed-tank level-control device that triggers pumps or alarms based on liquid rise in a tank. It is rated for up to 575 VAC and up to 2 HP, with contacts designed to close on liquid rise for reliable level sensing in power circuits. The unit mounts via a screw-in bushing and is specified for NEMA 1 environments, featuring a right-hand 45° offset orientation for convenient installation. This model is part of Schneider Electric’s 9037HG family and is commonly used in water tanks and other closed-tank applications where robust, mechanical level switching is required.