Submersible pump with 0.28-0.55 hp specifically designed for uses in narrow pits with dimensions down to 20 cm x 20 cm. Suitable to pump dirty water without fibers and comes with a built-in float switch, anti-corrosive and rust-proof materials. This pump features a knob for manual or automatic operation, sliding cover to float switch for easy access and cleaning, motor with a built-in protection system to stop it when it is overloaded and an excellent cooling of the motor that enables the pump to operate even when it is partially submersible.