Allen-Bradley 840-2B47 Float Switch for Liquid Level Control

The Allen-Bradley 840-2B47 (840-2B47) is an industrial electromechanical float switch engineered for automated liquid level monitoring and control in industrial and commercial processing systems. Built as part of the Allen-Bradley Bulletin 840 product family, this heavy-duty level control device automatically opens or closes electrical control circuits in response to rising or falling fluid levels in open or closed storage tanks, sumps, reservoirs, and drainage basins. The switch mechanism operates reliably in wet, harsh processing environments, providing dependable motor starter control and pump automation for filling, emptying, and alarm signaling duties. Designed for rugged operating conditions, the unit features a sturdy industrial enclosure that protects the internal contact assembly and mechanical linkages from dust, moisture, and mechanical impact. With an overall net weight of 10 kg, this float switch offers rigid mechanical stability and withstands continuous industrial operation across chemical processing facilities, municipal water management, waste treatment facilities, and manufacturing plants. Proper installation and periodic mechanical inspection help maintain precise liquid level regulation and dependable long-term performance across heavy-duty automation systems.