The Square D PUMPTROL 30-50 PSI Water Pump Low Pressure Cut OFF Switch FSG2J21M4CP is a durable and heavy-duty diaphragm switch designed for water pump applications. With a maximum amperage of 50A and a PSI range of 30-50, this switch features a combination style design in a grey powder coat finish. Made of metal and suitable for interior use, this switch is reliable and built to last. Designed by Schneider Electric, a trusted brand in electrical equipment, this switch is a practical and efficient solution for controlling the operation of your water pump. T-246