Heat sensor overload protection with automatic reset when motor cools to safe operating temperature. Reliable capacitor free design with shaded pole motor. Highlights: 1/2 HP Cast Iron Voltage: 115 volt 1 Phase 1-1/2 inch discharge Cord length : 10 feet Intake screen volute base Switch & power cord are serviceable Fits in a sump diameters of 10 inch or more Reliable capacitor free design with shaded pole motor Heat sensor overload protection with automatic reset when motor cools to safe operating temperature Performance : GPH5' = 3,780, 10 feet = 3,120, 15 feet = 2,820, 20 feet = 2,280, 25 feet = 1,800, 30 feet = 600, maximum lift 33 feet, 1-1/2 inch discharge