370W Thermal Protected Pump Controller

Engineered for 370W (0.5HP) submersible pumps operating at 220V, this external control box combines functional reliability with practical safety. Its enclosure is made from thick, impact-resistant ABS plastic, while internal wiring and contacts use high-conductivity copper for minimal energy loss and stable current handling. Key electrical specs include 20uF capacitance, 5A thermal protection threshold, and 20A rated switching current. The thermal protection system responds dynamically to temperature rise — cutting power before winding insulation degrades — a key differentiator from basic on/off switches lacking fault feedback. It supports automatic restart only after cooling, avoiding repeated cycling damage. Compatible with standard EU plug inputs and common deep-well pump leads, it integrates seamlessly into residential wells, garden boreholes, and light commercial drainage loops. No programming or calibration is required. Connection follows straightforward L/N/PE and pump terminal labelling — making commissioning accessible for competent DIY users and certified installers alike, especially where space or pump accessibility limits internal control options.