Square D 9037HW30 NEMA 4 Float Switch Close on Rise

The Square D 9037HW30 is a heavy-duty float switch designed for reliable liquid level control in demanding industrial and commercial applications. This NEMA 4 rated switch features a close-on-rise operation, meaning the electrical contacts close as the liquid level rises, making it ideal for pump control, tank level monitoring, and alarm systems.

Key Features:

• NEMA 4 rated enclosure for protection against windblown dust, rain, splashing water, and hose-directed water
• Close-on-rise contact operation for pump start or alarm activation
• Rugged polypropylene float construction for chemical resistance and durability
• Mercury-free switch design for environmental safety
• Wide temperature range operation from -40°F to 160°F (-40°C to 71°C)
• Available with various cable lengths for flexible installation
• UL and CSA listed for quality assurance

This float switch is suitable for use with water, wastewater, chemicals, and other liquids in applications including sump pumps, sewage systems, industrial process control, and agricultural irrigation. The 9037HW series is known for its reliability and long service life in harsh environments.