300W Solar Submersible water pump with Built-in Controller

A 300W solar submersible water pump with built‑in controller is a DC submersible pump designed to run directly from solar panels or a 24V DC source; the integrated controller manages start/stop, MPPT or simple DC regulation, and protections such as dry‑run/water‑shortage cutout for reliable off‑grid water delivery for irrigation, livestock, boreholes, tanks or fountains.

Typical Specifications

• Power / Voltage: ~300W, commonly 24V DC (variants may exist).

• Maximum head: commonly between ~35 m and 100 m depending on model and rotor design; typical retail listings show 35–50 m for many 300W units.

• Maximum flow: ranges from ~800 l/h (≈0.8 m3/h) up to ~1.5–2.0 m3/h on some models; check the pump curve for exact values.

• Construction: stainless steel shell, copper motor windings, brushless permanent magnet or DC brush motors for higher efficiency and longer life.

• Outlet size / piping: typically 1"–1¼" (varies by SKU); retail pages list 3/4" to 1.25" options—confirm on the product spec sheet.

• Protections (built‑in controller): water‑shortage/dry‑run protection, over‑current/over‑temperature protection, soft start and sometimes simple MPPT for better solar utilizatio